{"signature":{"version":"1.2","source":"NASA/JPL Horizons API"},"result":"*******************************************************************************\nJPL/HORIZONS                5635 Cole (1981 ER5)           2026-Jun-05 00:18:51\nRec #:    5635 (+COV) Soln.date: 2026-Mar-12_03:20:41   # obs: 4058 (1981-2025)\n \nIAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs):\n \n  EPOCH=  2458038.5 ! 2017-Oct-12.00 (TDB)         Residual RMS= .27576\n   EC= .2694554177322491   QR= 1.741949664866077   TP= 2458615.9974487922\n   OM= 274.1021313749639   W=  54.1437265652442    IN= 7.310416491773076\n   A= 2.384453607826       MA= 205.4137620800499   ADIST= 3.026957550785924\n   PER= 3.68207            N= .26768298            ANGMOM= .025580438\n   DAN= 1.90988            DDN= 2.62576            L= 328.023564\n   B= 5.9194736            MOID= .74218202         TP= 2019-May-12.4974487922\n \nAsteroid physical parameters (km, seconds, rotational period in hours):\n   GM= n.a.                RAD= 1.764              ROTPER= 5.7937\n   H= 14.24                G= .150                 B-V= n.a.\n                           ALBEDO= .294            STYP= n.a.\n\nASTEROID comments: \n1: soln ref.= JPL#63, OCC=0\n2: source=ORB\n*******************************************************************************\n\n\n*******************************************************************************\nEphemeris / API_USER Fri Jun  5 00:18:51 2026 Pasadena, USA      / Horizons    \n*******************************************************************************\nTarget body name: 5635 Cole (1981 ER5)            {source: JPL#63}\nCenter body name: Earth (399)                     {source: DE441}\nCenter-site name: GEOCENTRIC\n*******************************************************************************\nStart time      : A.D. 2022-Jan-01 10:00:00.0000 UT      \nStop  time      : A.D. 2022-Jan-02 00:00:00.0000 UT      \nStep-size       : 60 minutes\n*******************************************************************************\nTarget pole/equ : undefined\nTarget radii    : 1.764 km                                                     \nCenter geodetic : 0.0, 0.0, -6378.137             {E-lon(deg),Lat(deg),Alt(km)}\nCenter cylindric: 0.0, 0.0, 0.0                   {E-lon(deg),Dxy(km),Dz(km)}\nCenter pole/equ : ITRF93                          {East-longitude positive}\nCenter radii    : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c}       \nTarget primary  : Sun\nVis. interferer : MOON (R_eq= 1737.400) km        {source: DE441}\nRel. light bend : Sun                             {source: DE441}\nRel. lght bnd GM: 1.3271E+11 km^3/s^2                                          \nSmall-body perts: Yes                             {source: SB441-N16}\nAtmos refraction: NO (AIRLESS)\nRA format       : HMS\nTime format     : CAL \nCalendar mode   : Mixed Julian/Gregorian\nEOP file        : eop.260604.p260831                                           \nEOP coverage    : DATA-BASED 1962-JAN-20 TO 2026-JUN-04. PREDICTS-> 2026-AUG-30\nUnits conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s \nTable cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO )\nTable cut-offs 2: Solar elongation (  0.0,180.0=NO ),Local Hour Angle( 0.0=NO )\nTable cut-offs 3: RA/DEC angular rate (     0.0=NO )                           \n*******************************************************************************\nInitial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.):\n  EPOCH=  2458038.5 ! 2017-Oct-12.00 (TDB)         Residual RMS= .27576        \n   EC= .2694554177322491   QR= 1.741949664866077   TP= 2458615.9974487922      \n   OM= 274.1021313749639   W=  54.1437265652442    IN= 7.310416491773076       \n  Equivalent ICRF heliocentric cartesian coordinates (au, au/d):\n   X=-2.843041523611980E+00  Y= 9.186734975076907E-01  Z= 1.025279031996634E-02\n  VX=-1.614310658115746E-03 VY=-7.633786373006568E-03 VZ=-3.619250878028567E-03\nAsteroid physical parameters (km, seconds, rotational period in hours):        \n   GM= n.a.                RAD= 1.764              ROTPER= 5.7937              \n   H= 14.24                G= .150                 B-V= n.a.                   \n                           ALBEDO= .294            STYP= n.a.                  \n********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************\n Date__(UT)__HR:MN     R.A._____(ICRF)_____DEC  R.A.__(a-apparent)__DEC  dRA*cosD d(DEC)/dt  Azi____(a-app)___Elev  dAZ*cosE d(ELV)/dt  X_(sat-primary)_Y SatPANG  L_Ap_Sid_Time  a-mass mag_ex    APmag   S-brt      Illu%  Def_illu   ang-sep/v  Ang-diam  ObsSub-LON ObsSub-LAT  SunSub-LON SunSub-LAT  SN.ang   SN.dist    NP.ang   NP.dist  hEcl-Lon hEcl-Lat                r        rdot             delta      deldot  1-way_down_LT       VmagSn      VmagOb     S-O-T /r     S-T-O   T-O-M/MN_Illu%     O-P-T    PsAng   PsAMV      PlAng  Cnst        TDB-UT     ObsEcLon    ObsEcLat  N.Pole-RA  N.Pole-DC      GlxLon     GlxLat  L_Ap_SOL_Time  399_ins_LT  RA_3sigma DEC_3sigma  SMAA_3sig SMIA_3sig    Theta Area_3sig  POS_3sigma  RNG_3sigma RNGRT_3sig   DOP_S_3sig  DOP_X_3sig  RT_delay_3sig  Tru_Anom  L_Ap_Hour_Ang       phi  PAB-LON  PAB-LAT  App_Lon_Sun  RA_(ICRF-a-apparnt)_DEC  I_dRA*cosD I_d(DEC)/dt  Sky_motion  Sky_mot_PA  RelVel-ANG  Lun_Sky_Brt  sky_SNR   UT1-UTC\n********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************\n$$SOE\n 2022-Jan-01 10:00     14 15 36.54 -20 17 34.4  14 16 48.66 -20 23 32.2  48.08365  -19.9058        n.a.       n.a.      n.a.      n.a.  -224399. 9337.095 258.152           n.a.    n.a.   n.a.   19.706   5.482   97.25093    4.5E-5  224620.8/*  0.001635        n.a.       n.a.        n.a.       n.a.  106.00      0.00      n.a.      n.a.  199.2397  -7.0588   2.665220871667  -4.1745345  2.97434848775479 -25.1601727    24.73690207   17.1391045  40.0695720   62.3947 /L   19.0851    43.1/  2.8123   98.2225  286.077 285.252    0.30551   Vir     69.183903  218.7426014  -6.3225209       n.a.       n.a.  328.374685  38.386856           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.333 0.0000009       0.002      0.9149  0.0000001         0.00        0.01       0.000006  230.8319           n.a.   19.0878 208.8467  -6.7842         n.a.  14 15 35.94 -20 17 29.3    48.05887    -19.9655   0.8673520   112.48872   -38.89898         n.a.     n.a.  -0.11046\n 2022-Jan-01 11:00     14 15 39.96 -20 17 54.4  14 16 52.08 -20 23 52.1  48.07498  -19.9011        n.a.       n.a.      n.a.      n.a.  -224510. 9304.608 258.135           n.a.    n.a.   n.a.   19.706   5.482   97.24929    4.5E-5  224720.8/*  0.001636        n.a.       n.a.        n.a.       n.a.  106.00      0.00      n.a.      n.a.  199.2484  -7.0585   2.665120398951  -4.1750446  2.97374295971009 -25.1654710    24.73186605   17.1398363  40.0633965   62.4224 /L   19.0909    43.7/  2.6470   98.1889  286.078 285.247    0.30735   Vir     69.183904  218.7571300  -6.3233180       n.a.       n.a.  328.387353  38.376347           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.327 0.0000009       0.002      0.9148  0.0000001         0.00        0.01       0.000006  230.8405           n.a.   19.0935 208.8582  -6.7845         n.a.  14 15 39.36 -20 17 49.3    48.05021    -19.9609   0.8671889   112.48762   -38.91584         n.a.     n.a.  -0.11046\n 2022-Jan-01 12:00     14 15 43.37 -20 18 14.4  14 16 55.50 -20 24 12.0  48.06631  -19.8965        n.a.       n.a.      n.a.      n.a.  -224621. 9272.077 258.118           n.a.    n.a.   n.a.   19.705   5.482   97.24764    4.5E-5  224820.9/*  0.001636        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.2570  -7.0582   2.665019913956  -4.1755547  2.97313730423626 -25.1707636    24.72682896   17.1405683  40.0572165   62.4502 /L   19.0967    44.3/  2.4867   98.1554  286.078 285.242    0.30918   Vir     69.183906  218.7716559  -6.3241155       n.a.       n.a.  328.400013  38.365838           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.322 0.0000009       0.002      0.9147  0.0000001         0.00        0.01       0.000006  230.8491           n.a.   19.0993 208.8698  -6.7848         n.a.  14 15 42.77 -20 18 09.2    48.04153    -19.9563   0.8670256   112.48653   -38.93270         n.a.     n.a.  -0.11045\n 2022-Jan-01 13:00     14 15 46.79 -20 18 34.3  14 16 58.92 -20 24 31.9  48.05763  -19.8918        n.a.       n.a.      n.a.      n.a.  -224732. 9239.504 258.101           n.a.    n.a.   n.a.   19.705   5.482   97.24600    4.5E-5  224920.9/*  0.001636        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.2657  -7.0579   2.664919416685  -4.1760647  2.97253152147282 -25.1760504    24.72179082   17.1413004  40.0510320   62.4780 /L   19.1024    45.0/  2.3314   98.1218  286.078 285.237    0.31102   Vir     69.183907  218.7861790  -6.3249134       n.a.       n.a.  328.412667  38.355330           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.317 0.0000009       0.002      0.9145  0.0000001         0.00        0.01       0.000006  230.8577           n.a.   19.1051 208.8814  -6.7851         n.a.  14 15 46.19 -20 18 29.2    48.03284    -19.9516   0.8668622   112.48544   -38.94957         n.a.     n.a.  -0.11045\n 2022-Jan-01 14:00     14 15 50.20 -20 18 54.3  14 17 02.34 -20 24 51.8  48.04894  -19.8872        n.a.       n.a.      n.a.      n.a.  -224843. 9206.887 258.084           n.a.    n.a.   n.a.   19.705   5.482   97.24436    4.5E-5  225021.0/*  0.001637        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.2744  -7.0576   2.664818907138  -4.1765747  2.97192561155954 -25.1813313    24.71675162   17.1420325  40.0448430   62.5058 /L   19.1082    45.6/  2.1812   98.0883  286.078 285.232    0.31286   Vir     69.183908  218.8006994  -6.3257118       n.a.       n.a.  328.425314  38.344821           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.311 0.0000009       0.002      0.9144  0.0000001         0.00        0.01       0.000006  230.8663           n.a.   19.1108 208.8930  -6.7855         n.a.  14 15 49.60 -20 18 49.1    48.02414    -19.9469   0.8666986   112.48436   -38.96644         n.a.     n.a.  -0.11044\n 2022-Jan-01 15:00     14 15 53.62 -20 19 14.2  14 17 05.76 -20 25 11.7  48.04023  -19.8825        n.a.       n.a.      n.a.      n.a.  -224954. 9174.227 258.067           n.a.    n.a.   n.a.   19.704   5.482   97.24271    4.5E-5  225121.0/*  0.001637        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.2830  -7.0573   2.664718385317  -4.1770846  2.97131957463663 -25.1866064    24.71171137   17.1427648  40.0386495   62.5336 /L   19.1139    46.2/  2.0360   98.0547  286.078 285.227    0.31469   Vir     69.183909  218.8152171  -6.3265106       n.a.       n.a.  328.437954  38.334312           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.306 0.0000009       0.002      0.9143  0.0000001         0.00        0.01       0.000006  230.8749           n.a.   19.1166 208.9046  -6.7858         n.a.  14 15 53.02 -20 19 09.1    48.01543    -19.9423   0.8665347   112.48327   -38.98332         n.a.     n.a.  -0.11043\n 2022-Jan-01 16:00     14 15 57.03 -20 19 34.2  14 17 09.18 -20 25 31.6  48.03152  -19.8778        n.a.       n.a.      n.a.      n.a.  -225065. 9141.524 258.050           n.a.    n.a.   n.a.   19.704   5.482   97.24107    4.5E-5  225221.1/*  0.001637        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.2917  -7.0571   2.664617851222  -4.1775945  2.97071341084461 -25.1918757    24.70667006   17.1434972  40.0324515   62.5614 /L   19.1197    46.8/  1.8959   98.0212  286.078 285.222    0.31653   Vir     69.183910  218.8297320  -6.3273098       n.a.       n.a.  328.450587  38.323803           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.301 0.0000009       0.002      0.9142  0.0000001         0.00        0.01       0.000006  230.8835           n.a.   19.1223 208.9161  -6.7861         n.a.  14 15 56.43 -20 19 29.0    48.00671    -19.9376   0.8663707   112.48218   -39.00020         n.a.     n.a.  -0.11043\n 2022-Jan-01 17:00     14 16 00.44 -20 19 54.1  14 17 12.60 -20 25 51.5  48.02279  -19.8731        n.a.       n.a.      n.a.      n.a.  -225176. 9108.778 258.033           n.a.    n.a.   n.a.   19.704   5.482   97.23943    4.5E-5  225321.2/*  0.001638        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3004  -7.0568   2.664517304856  -4.1781043  2.97010712032443 -25.1971391    24.70162769   17.1442298  40.0262490   62.5892 /L   19.1254    47.4/  1.7610   97.9876  286.078 285.217    0.31837   Vir     69.183912  218.8442441  -6.3281094       n.a.       n.a.  328.463213  38.313294           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.295 0.0000009       0.002      0.9141  0.0000001         0.00        0.01       0.000006  230.8921           n.a.   19.1281 208.9277  -6.7864         n.a.  14 15 59.85 -20 19 49.0    47.99798    -19.9330   0.8662065   112.48109   -39.01708         n.a.     n.a.  -0.11042\n 2022-Jan-01 18:00     14 16 03.86 -20 20 14.0  14 17 16.02 -20 26 11.4  48.01405  -19.8684        n.a.       n.a.      n.a.      n.a.  -225287. 9075.988 258.016           n.a.    n.a.   n.a.   19.703   5.482   97.23779    4.5E-5  225421.3/*  0.001638        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3090  -7.0565   2.664416746220  -4.1786140  2.96950070321734 -25.2023966    24.69658428   17.1449624  40.0200420   62.6170 /L   19.1312    48.0/  1.6311   97.9540  286.079 285.212    0.32021   Vir     69.183913  218.8587536  -6.3289095       n.a.       n.a.  328.475832  38.302785           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.290 0.0000009       0.002      0.9140  0.0000001         0.00        0.01       0.000006  230.9007           n.a.   19.1338 208.9393  -6.7867         n.a.  14 16 03.26 -20 20 08.9    47.98924    -19.9283   0.8660422   112.48001   -39.03397         n.a.     n.a.  -0.11041\n 2022-Jan-01 19:00     14 16 07.27 -20 20 33.9  14 17 19.43 -20 26 31.2  48.00531  -19.8638        n.a.       n.a.      n.a.      n.a.  -225399. 9043.156 257.999           n.a.    n.a.   n.a.   19.703   5.482   97.23614    4.5E-5  225521.4/*  0.001638        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3177  -7.0562   2.664316175315  -4.1791237  2.96889415966493 -25.2076482    24.69153981   17.1456951  40.0138305   62.6448 /L   19.1369    48.6/  1.5065   97.9205  286.079 285.207    0.32205   Vir     69.183914  218.8732602  -6.3297099       n.a.       n.a.  328.488444  38.292276           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.285 0.0000009       0.002      0.9138  0.0000001         0.00        0.01       0.000006  230.9093           n.a.   19.1395 208.9509  -6.7870         n.a.  14 16 06.67 -20 20 28.8    47.98049    -19.9236   0.8658776   112.47892   -39.05086         n.a.     n.a.  -0.11041\n 2022-Jan-01 20:00     14 16 10.68 -20 20 53.9  14 17 22.85 -20 26 51.1  47.99655  -19.8591        n.a.       n.a.      n.a.      n.a.  -225510. 9010.281 257.982           n.a.    n.a.   n.a.   19.703   5.483   97.23450    4.5E-5  225621.6/*  0.001639        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3264  -7.0559   2.664215592143  -4.1796333  2.96828748980921 -25.2128940    24.68649429   17.1464280  40.0076145   62.6727 /L   19.1426    49.2/  1.3869   97.8869  286.079 285.202    0.32389   Vir     69.183915  218.8877642  -6.3305109       n.a.       n.a.  328.501049  38.281767           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.279 0.0000009       0.002      0.9137  0.0000001         0.00        0.01       0.000006  230.9179           n.a.   19.1453 208.9625  -6.7874         n.a.  14 16 10.08 -20 20 48.8    47.97173    -19.9190   0.8657129   112.47784   -39.06775         n.a.     n.a.  -0.11040\n 2022-Jan-01 21:00     14 16 14.09 -20 21 13.8  14 17 26.27 -20 27 11.0  47.98778  -19.8544        n.a.       n.a.      n.a.      n.a.  -225621. 8977.362 257.965           n.a.    n.a.   n.a.   19.702   5.483   97.23286    4.5E-5  225721.7/*  0.001639        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3350  -7.0556   2.664114996704  -4.1801429  2.96768069379245 -25.2181338    24.68144772   17.1471610  40.0013940   62.7005 /L   19.1484    49.8/  1.2726   97.8534  286.079 285.197    0.32573   Vir     69.183917  218.9022653  -6.3313122       n.a.       n.a.  328.513647  38.271259           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.274 0.0000009       0.002      0.9136  0.0000001         0.00        0.01       0.000006  230.9265           n.a.   19.1510 208.9740  -6.7877         n.a.  14 16 13.50 -20 21 08.7    47.96295    -19.9143   0.8655480   112.47676   -39.08465         n.a.     n.a.  -0.11039\n 2022-Jan-01 22:00     14 16 17.50 -20 21 33.7  14 17 29.68 -20 27 30.8  47.97900  -19.8497        n.a.       n.a.      n.a.      n.a.  -225732. 8944.401 257.948           n.a.    n.a.   n.a.   19.702   5.483   97.23122    4.5E-5  225821.9/*  0.001639        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3437  -7.0553   2.664014389000  -4.1806524  2.96707377175727 -25.2233676    24.67640010   17.1478941  39.9951690   62.7283 /L   19.1541    50.4/  1.1635   97.8198  286.079 285.192    0.32757   Vir     69.183918  218.9167637  -6.3321139       n.a.       n.a.  328.526238  38.260750           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.268 0.0000009       0.002      0.9135  0.0000001         0.00        0.01       0.000006  230.9351           n.a.   19.1567 208.9856  -6.7880         n.a.  14 16 16.91 -20 21 28.6    47.95417    -19.9096   0.8653829   112.47567   -39.10155         n.a.     n.a.  -0.11038\n 2022-Jan-01 23:00     14 16 20.91 -20 21 53.6  14 17 33.10 -20 27 50.7  47.97021  -19.8450        n.a.       n.a.      n.a.      n.a.  -225844. 8911.396 257.931           n.a.    n.a.   n.a.   19.702   5.483   97.22958    4.5E-5  225922.0/*  0.001640        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3524  -7.0550   2.663913769033  -4.1811619  2.96646672384668 -25.2285955    24.67135144   17.1486273  39.9889396   62.7561 /L   19.1598    51.0/  1.0595   97.7863  286.079 285.186    0.32941   Vir     69.183919  218.9312593  -6.3329161       n.a.       n.a.  328.538822  38.250240           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.263 0.0000009       0.002      0.9134  0.0000001         0.00        0.01       0.000006  230.9437           n.a.   19.1625 208.9972  -6.7883         n.a.  14 16 20.32 -20 21 48.5    47.94538    -19.9049   0.8652176   112.47459   -39.11846         n.a.     n.a.  -0.11037\n 2022-Jan-02 00:00     14 16 24.32 -20 22 13.5  14 17 36.52 -20 28 10.5  47.96141  -19.8403        n.a.       n.a.      n.a.      n.a.  -225955. 8878.349 257.914           n.a.    n.a.   n.a.   19.701   5.483   97.22794    4.5E-5  226022.2/*  0.001640        n.a.       n.a.        n.a.       n.a.  106.01      0.00      n.a.      n.a.  199.3610  -7.0547   2.663813136803  -4.1816713  2.96585955020396 -25.2338175    24.66630173   17.1493606  39.9827056   62.7839 /L   19.1655    51.6/  0.9608   97.7527  286.080 285.181    0.33125   Vir     69.183920  218.9457521  -6.3337187       n.a.       n.a.  328.551400  38.239731           n.a.    0.000000      0.001      0.000    0.00150   0.00019  -17.258 0.0000009       0.002      0.9132  0.0000001         0.00        0.01       0.000006  230.9523           n.a.   19.1682 209.0087  -6.7886         n.a.  14 16 23.73 -20 22 08.4    47.93657    -19.9002   0.8650521   112.47351   -39.13537         n.a.     n.a.  -0.11036\n$$EOE\n********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************\nColumn meaning:\n \nTIME\n\n  Times PRIOR to 1962 are UT1, a mean-solar time closely related to the\nprior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current\ncivil or \"wall-clock\" time-scale. UTC is kept within 0.9 seconds of UT1\nusing integer leap-seconds for 1972 and later years.\n\n  Conversion from the internal Barycentric Dynamical Time (TDB) of solar\nsystem dynamics to the non-uniform civil UT time-scale requested for output\nhas not been determined for UTC times after the next July or January 1st.\nTherefore, the last known leap-second is used as a constant over future\nintervals.\n\n  Time tags refer to the UT time-scale conversion from TDB on Earth\nregardless of observer location within the solar system, although clock\nrates may differ due to the local gravity field and no analog to \"UT\"\nmay be defined for that location.\n\n  Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank\n(\" \") denotes an A.D. date.\n \nCALENDAR SYSTEM\n\n  Mixed calendar mode was active such that calendar dates after AD 1582-Oct-15\n(if any) are in the modern Gregorian system. Dates prior to 1582-Oct-5 (if any)\nare in the Julian calendar system, which is automatically extended for dates\nprior to its adoption on 45-Jan-1 BC.  The Julian calendar is useful for\nmatching historical dates. The Gregorian calendar more accurately corresponds\nto the Earth's orbital motion and seasons. A \"Gregorian-only\" calendar mode is\navailable if such physical events are the primary interest.\n\n  NOTE: \"n.a.\" in output means quantity \"not available\" at the print-time.\n \nSTATISTICAL UNCERTAINTIES\n\n  Output includes formal +/- 3 standard-deviation statistical orbit uncertainty\nquantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is\nwithin given bounds.  These statistical calculations assume observational data\nerrors are random. If there are systematic biases (such as timing, reduction or\nstar-catalog errors), results can be optimistic. Because the epoch covariance\nis mapped using linearized variational partial derivatives, results can also\nbe optimistic for times far from the solution epoch, particularly for objects\nhaving close planetary encounters.\n \n 'R.A._____(ICRF)_____DEC' =\n  Astrometric right ascension and declination of the target center with\nrespect to the observing site (coordinate origin) in the reference frame of\nthe planetary ephemeris (ICRF). Compensated for down-leg light-time delay\naberration.\n\n  Units: RA  in hours-minutes-seconds of time,    HH MM SS.ff{ffff}\n         DEC in degrees-minutes-seconds of arc,  sDD MN SC.f{ffff}\n \n 'R.A.__(a-apparent)__DEC' =\n  Airless apparent right ascension and declination of the target center\nwith respect to an instantaneous reference frame defined by the Earth equator\nof-date (z-axis) and meridian containing the Earth equinox of-date (x-axis,\nEOP-corrected IAU76/80). Compensated for down-leg light-time delay,\ngravitational deflection of light, stellar aberration, precession & nutation.\nNote: equinox (RA origin) is offset -53 mas from the of-date frame defined\nby the IAU06/00a P & N system.\n\n  Units: RA  in hours-minutes-seconds of time,   HH MM SS.ff{ffff}\n         DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff}\n \n 'dRA*cosD d(DEC)/dt' =\n  The angular rate of change in apparent RA and DEC of the target. This is\nwith respect to the non-inertial IAU76/80 Earth true equator and equinox\nof-date reference frame.  d(RA)/dt is multiplied by the cosine of declination\nto provide a linear rate in the plane-of-sky. Units: ARCSECONDS PER HOUR\n \n 'Azi____(a-app)___Elev' =\n  Airless apparent azimuth and elevation of target center. Compensated\nfor light-time, the gravitational deflection of light, stellar aberration,\nprecession and nutation. Azimuth is measured clockwise from north:\n\n  North(0) -> East(90) -> South(180) -> West(270) -> North (360)\n\nElevation angle is with respect to a plane perpendicular to the reference\nsurface local zenith direction. TOPOCENTRIC ONLY.  Units: DEGREES\n \n 'dAZ*cosE d(ELV)/dt' =\n   The rate of change of target center apparent azimuth and elevation\n(airless). d(AZ)/dt is multiplied by the cosine of the elevation angle.\nTOPOCENTRIC ONLY. Units: ARCSECOND PER MINUTE\n \n 'X_(sat-primary)_Y SatPANG' =\n   Satellite apparent differential coordinates in the plane-of-sky with\nrespect to the primary body along with the satellite position angle.\nDifferential coordinates are defined in RA as:\n\n     X= ((RA_sat - RA_primary) * cosine(DEC_primary))\n\n... and in DEC as:\n\n     Y= (DEC_sat - DEC_primary)\n\nNon-lunar satellites only. \"SatPANG\" is the counter-clockwise (CCW) position\nangle from the reference-frame of-date north-pole to a line from the primary\ncenter to the satellite center. Units: ARCSECONDS (X & Y), DEGREES (pos, angle)\n \n 'L_Ap_Sid_Time' =\n   Local Apparent Sidereal Time. The angle measured westward in the body\ntrue-equator of-date plane from the meridian containing the body-fixed\nobserver to the meridian containing the true Earth equinox (defined by\nintersection of the true Earth equator of date with the ecliptic of date).\nTOPOCENTRIC ONLY. Units: HH MM SS.ffff (hours-minutes-seconds of time)\n \n 'a-mass mag_ex' =\n    RELATIVE optical airmass and visual magnitude extinction. Airmass is the\nratio between the absolute optical airmass for the targets' refracted CENTER\npoint to the absolute optical airmass at zenith. Also output is the estimated\nvisual magnitude extinction due to the atmosphere, as seen by the observer.\nAVAILABLE ONLY FOR TOPOCENTRIC EARTH SITES WHEN THE TARGET IS ABOVE THE\nHORIZON.  Units: none (airmass) and magnitudes (extinction).\n \n 'APmag   S-brt' =\n   The asteroids' approximate apparent airless visual magnitude and surface\nbrightness using the standard IAU H-G system magnitude model:\n\n   APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi_1 + G*phi_2)\n\n   For solar phase angles >90 deg, the error could exceed 1 magnitude. For\nphase angles >120 degrees, output values are rounded to the nearest integer to\nindicate error could be large and unknown. For Earth-based observers, the\nestimated dimming due to atmospheric absorption (extinction) is available as\na separate, requestable quantity.\n\n   Surface brightness is the average airless visual magnitude of a\nsquare-arcsecond of the illuminated portion of the apparent disk. It is\ncomputed only if the target radius is known.\n\n   Units: MAGNITUDES & MAGNITUDES PER SQUARE ARCSECOND\n \n 'Illu%' =\n   Fraction of the target objects' assumed circular disk illuminated by Sun\n(phase), as seen by the observer.  Units: PERCENT\n \n 'Def_illu' =\n   Defect of illumination. The maximum angular width of the target body's\nassumed circular disk diameter NOT illuminated by the Sun. Units: ARCSECONDS\n \n 'ang-sep/v' =\n  The angular separation between the center of the target object and the center\nof the (remote) primary body it revolves around, as seen by the observer, with\ntarget visibility code.\n\n  Visibility codes (refers to limb-to-limb):\n\n    /t = Transiting primary body disk    /O = Occulted by primary body disk\n    /p = Partial umbral eclipse          /P = Occulted partial umbral eclipse\n    /u = Total umbral eclipse            /U = Occulted total umbral eclipse\n    /- = Target is the primary body      /* = None of above (\"free and clear\")\n\n  The radius of both primary and target body is taken to be the equatorial\nvalue (maximum, given a triaxial shape). Atmospheric effects and oblateness\naspect are NOT currently considered.  Light-time is considered.\n\n  Units: ARCSECONDS and visibility code\n \n 'Ang-diam' =\n   The equatorial angular width of the target body full disk, if it were fully\nilluminated and visible to the observer. If the target body diameter is unknown\n\"n.a.\" is output.\n\n   Units: ARCSECONDS\n \n 'ObsSub-LON ObsSub-LAT' =\n   Apparent planetodetic longitude and latitude of the center of the target\ndisc seen by the OBSERVER at print-time. This is NOT exactly the same as the\n\"nearest\" sub-point for a non-spherical target shape (since the center of\nthe disc might not be the point closest to the observer), but is generally\nvery close if not a very irregular body shape. Down-leg light travel-time\nfrom target to observer is taken into account. Latitude is the angle between\nthe equatorial plane and the line perpendicular to the reference ellipsoid of\nthe body, so includes body oblateness. The reference ellipsoid is an oblate\nspheroid with a single flatness coefficient in which the y-axis body radius\nis taken to be the same value as the x-axis radius. Positive longitude is to\nthe WEST for this target. Cartographic system is given in the header.\n   Units: DEGREES DEGREES\n \n 'SunSub-LON SunSub-LAT' =\n   Apparent sub-solar longitude and latitude of the Sun on the target. The\napparent planetodetic longitude and latitude of the center of the target disc\nas seen from the Sun, as seen by the observer at print-time. This is NOT\nexactly the same as the \"sub-solar\" (nearest) point for a non-spherical target\nshape (since the center of the disc seen from the Sun might not be the closest\npoint to the Sun), but is very close if not a highly irregular body shape.\nLight travel-time from Sun to target and from target to observer is taken into\naccount.  Latitude is the angle between the equatorial plane and the line\nperpendicular to the reference ellipsoid of the body. The reference ellipsoid\nis an oblate spheroid with a single flatness coefficient in which the y-axis\nbody radius is taken to be the same value as the x-axis radius.  Positive\nlongitude is to the WEST for this target. Cartographic system is given in the\nheader.   Units: DEGREES DEGREES\n \n 'SN.ang   SN.dist' =\n  Targets' apparent sub-solar point position angle (counter-clockwise with\nrespect to the direction of the true-of-date reference-frame north-pole) and\nits angular distance from the sub-observer point (center of disk) at print\ntime. A negative distance indicates the sub-solar point is on the hidden\nhemisphere.  Units: DEGREES and ARCSECONDS\n \n 'NP.ang   NP.dist' =\n  Targets' apparent north-pole position angle (counter-clockwise with respect\nto the direction of the true-of-date reference-frame north-pole) and its\nangular distance from the sub-observer point (center of disk) at observation\ntime.  A negative distance indicates the planets' north-pole is on the hidden\nhemisphere.  Units: DEGREES and ARCSECONDS\n \n 'hEcl-Lon hEcl-Lat' =\n    Geometric heliocentric J2000 ecliptic longitude and latitude of target\ncenter at the instant light leaves it to be observed at print time (print time\nminus down-leg light-time).  Units: DEGREES\n \n 'r        rdot' =\n   The Sun's apparent range (\"r\", light-time aberrated) and range-rate (\"rdot\")\nrelative to the target center, as seen by the observer. A positive \"rdot\" means\nthe target center was moving away from the Sun, negative means moving toward\nthe Sun.  Units: AU and KM/S\n \n 'delta      deldot' =\n   Apparent range (\"delta\", light-time aberrated) and range-rate (\"delta-dot\")\nof the target center relative to the observer. A positive \"deldot\" means the\ntarget center is moving away from the observer, negative indicates movement\ntoward the observer.  Units: AU and KM/S\n \n '1-way_down_LT' =\n   1-way down-leg light-time from target center to observer. The elapsed time\nsince light (observed at print-time) would have left or reflected off a point\nat the center of the target. Units: MINUTES\n \n 'VmagSn      VmagOb' =\n   Magnitude of target centers' velocity with respect to the Sun (\"VmagSn\")\nand the observer (\"VmagOb\") at the time light left the target center to be\nobserved (print time minus down-leg light-time). These are absolute values\nof the velocity vectors (total speeds) and do NOT indicate direction of motion.\nUnits: KM/S\n \n 'S-O-T /r' =\n   Sun-Observer-Target apparent SOLAR ELONGATION ANGLE seen from the observers'\nlocation at print-time.\n\n   The '/r' column provides a code indicating the targets' apparent position\nrelative to the Sun in the observers' sky, as described below:\n\n   Case A: For an observing location on the surface of a rotating body, that\nbody rotational sense is considered:\n\n    /T indicates target TRAILS Sun   (evening sky: rises and sets AFTER Sun)\n    /L indicates target LEADS Sun    (morning sky: rises and sets BEFORE Sun)\n\n   Case B: For an observing point that does not have a rotational model (such\nas a spacecraft), the \"leading\" and \"trailing\" condition is defined by the\nobservers' heliocentric ORBITAL motion:\n\n    * If continuing in the observers' current direction of heliocentric\n       motion would encounter the targets' apparent longitude first, followed\n       by the Sun's, the target LEADS the Sun as seen by the observer.\n\n    * If the Sun's apparent longitude would be encountered first, followed\n       by the targets', the target TRAILS the Sun.\n\n   Two other codes can be output:\n    /* indicates observer is Sun-centered    (undefined)\n    /? Target is aligned with Sun center     (no lead or trail)\n\n   The S-O-T solar elongation angle is numerically the minimum separation\nangle of the Sun and target in the sky in any direction. It does NOT indicate\nthe amount of separation in the leading or trailing directions, which would\nbe defined along the equator of a spherical coordinate system.\n\n   Units: DEGREES\n \n 'S-T-O' =\n   The Sun-Target-Observer angle; the interior vertex angle at target center\nformed by a vector from the target to the apparent center of the Sun (at\nreflection time on the target) and the apparent vector from target to the\nobserver at print-time. Slightly different from true PHASE ANGLE (requestable\nseparately) at the few arcsecond level in that it includes stellar aberration\non the down-leg from target to observer.  Units: DEGREES\n \n 'T-O-M/MN_Illu%' =\n   Target-Observer-Moon LUNAR ELONGATION angle and illuminated percentage.\nThe apparent lunar elongation angle between target body center and Moon\ncenter, seen from the observing site, along with fraction of the lunar disk\nilluminated by the Sun. A negative lunar elongation angle indicates the target\ncenter is behind the Moon.  Units: DEGREES & PERCENT\n \n 'O-P-T' =\n   Observer-Primary-Target angle; apparent angle between a target satellite,\nits primarys' center and an observer at print time. Interior vertex angle at\nthe primary.  Units: DEGREES\n \n 'PsAng   PsAMV' =\n   The position angles of the extended Sun-to-target radius vector (\"PsAng\")\nand the negative of the targets' heliocentric velocity vector (\"PsAMV\"), as\nseen in the observers' plane-of-sky, measured counter-clockwise (east) from\nreference-frame north-pole. Primarily intended for ACTIVE COMETS, \"PsAng\"\nis an indicator of the comets' gas-tail orientation in the sky (being in the\nanti-sunward direction) while \"PsAMV\" is an indicator of dust-tail orientation.\nUnits: DEGREES\n \n 'PlAng' =\n   Angle between observer and target orbital plane, measured from center\nof target at the moment light seen at observation time leaves the target.\nPositive values indicate observer is above the objects' orbital plane, in\nthe direction of reference-frame +z axis.  Units: DEGREES\n \n 'Cnst' =\n   Constellation ID; the 3-letter abbreviation for the name of the\nconstellation containing the target centers' astrometric position,\nas defined by IAU (1930) boundary delineation.  See documentation\nfor list of abbreviations.\n \n 'TDB-UT' =\n   Difference between the uniform Barycentric Dynamical time-scale and the\nEarth-rotation dependent Universal Time. Prior to 1962, the difference is with\nrespect to UT1 (TDB-UT1) and the 0.002 second maximum amplitude distinction\nbetween TT and TDB is not maintained. For 1962 and later, the difference is\nwith respect to UTC (TDB-UTC) and periodic terms less than 1.e-6 second are\nignored. Values beyond the next July or January 1st may change if a leap-second\nis later required by the IERS. Values from the present date forward through\nthe next ~78 days are predictions. Beyond that prediction interval, the last\nprediction is taken as a constant for all future dates. Units: SECONDS\n \n 'ObsEcLon    ObsEcLat' =\n   Observer-centered IAU76/80 ecliptic-of-date longitude and latitude of the\ntarget centers' apparent position, with light-time, gravitational deflection of\nlight, and stellar aberrations.  Units: DEGREES\n \n 'N.Pole-RA  N.Pole-DC' =\n    ICRF right ascension and declination of the target body's north-pole\ndirection at the time light left the body to be observed at print time.\nTarget pole/rotation model is given in the header. Units: DEGREES\n \n 'GlxLon     GlxLat' =\n   Observer-centered Galactic System II (post WW II) longitude and latitude\nof the target centers' apparent position, with light-time, gravitational\ndeflection of light, and stellar aberrations. Units: DEGREES\n \n 'L_Ap_SOL_Time' =\n   Local Apparent SOLAR Time for observing site. This is the time indicated by\na sundial.  TOPOCENTRIC ONLY.  Units: HH MM SS.ffff (sexagesimal angular hours)\n \n '399_ins_LT' =\n   Instantaneous light-time of the station with respect to Earth center at\nprint-time. The geometric (or \"true\") separation of site and Earth center,\ndivided by the speed of light.  Units: MINUTES\n \n 'RA_3sigma DEC_3sigma' =\n  Uncertainty in Right-Ascension and Declination. Output values are the formal\n+/- 3 standard-deviations (sigmas) around nominal position. Units: ARCSECONDS\n \n 'SMAA_3sig SMIA_3sig    Theta Area_3sig' =\n  Plane-of-sky (POS) error ellipse data. These quantities summarize the\ntargets' 3-dimensional 3-standard-deviation formal uncertainty volume projected\ninto a reference plane perpendicular to the observers' line-of-sight.\n\n   SMAA_3sig = Angular width of the 3-sigma error ellipse semi-major\n                axis in POS. Units: ARCSECONDS.\n\n   SMIA_3sig = Angular width of the 3-sigma error ellipse semi-minor\n                axis in POS. Units: ARCSECONDS.\n\n   Theta     = Orientation angle of the error ellipse in POS; the\n                clockwise angle from the direction of increasing RA to\n                the semi-major axis of the error ellipse, in the\n                direction of increasing DEC.  Units: DEGREES.\n\n                              +DEC\n                                ^\n                              \\ |\n                          theta\\|\n                      +RA  <----+-----\n                                |\\\n                                | \\\n\n   Area_3sig = Area of sky enclosed by the 3-sigma error ellipse.\n                Units: ARCSECONDS ^ 2.\n \n 'POS_3sigma' =\n  The Root-Sum-of-Squares (RSS) of the 3-standard deviation plane-of-sky\nerror ellipse major and minor semi-axes. This single pointing uncertainty\nnumber gives an angular distance (a circular radius) from the targets'\nnominal position in the sky that encompasses the error-ellipse.\nUnits: ARCSECONDS.\n \n 'RNG_3sigma RNGRT_3sig' =\n  Range and range rate (radial velocity) formal 3-standard-deviation\nuncertainties.  Units: KM, KM/S\n \n 'DOP_S_3sig  DOP_X_3sig  RT_delay_3sig' =\n  Doppler radar uncertainties at S-band (2380 MHz) and X-band (8560 MHz)\nfrequencies, along with the round-trip (total) delay to first-order.\nUnits: HERTZ and SECONDS\n \n 'Tru_Anom' =\n   Apparent true anomaly angle of the targets' heliocentric orbit position;\nthe angle in the targets' instantaneous orbit plane from the orbital periapse\ndirection to the target, measured positively in the direction of motion.\nThe position of the target is taken to be at the moment light seen by the\nobserver at print-time would have left the center of the object. That is,\nthe heliocentric position of the target used to compute the true anomaly is\none down-leg light-time prior to the print-time. Units: DEGREES\n \n 'L_Ap_Hour_Ang' =\n   Local apparent HOUR ANGLE of target at observing site. The angle between the\nobservers' meridian plane, containing Earth's axis of-date and local zenith\ndirection, and a great circle passing through Earth's axis-of-date and the\ntargets' direction, measured westward from the zenith meridian to target\nmeridian along the equator. Negative values are angular times UNTIL transit.\nPositive values are angular times SINCE transit. Exactly 24_hrs/360_degrees.\nEARTH TOPOCENTRIC ONLY.  Units: sHH MM SS.fff (sexagesimal angular hours)\n \n 'phi  PAB-LON  PAB-LAT' =\n   \"phi\" is the true PHASE ANGLE at the observers' location at print time.\n\"PAB-LON\" and \"PAB-LAT\" are the J2000 ecliptic longitude and latitude of the\nphase angle bisector direction; the outward directed angle bisecting the arc\ncreated by the apparent vector from Sun to target center and the astrometric\nvector from observer to target center. For an otherwise uniform ellipsoid, the\ntime when its long-axis is perpendicular to the PAB direction approximately\ncorresponds to lightcurve maximum (or maximum brightness) of the body. PAB is\ndiscussed in Harris et al., Icarus 57, 251-258 (1984).\n\n   Units: DEGREES, DEGREES, DEGREES\n \n 'App_Lon_Sun' =\n  The apparent target-centered longitude of the Sun (\"apparent L_s\") as seen at\nthe target when the light recorded by the observer at print-time reflected off\nthe target. It is referred to a coordinate system where the x-axis is the\nequinox direction defined by the targets' instantaneous IAU2015 pole direction\nand heliocentric orbit plane at reflection time, and is measured positively in\nan eastward direction (counter-clockwise around the positive pole of the solar\nsystem angular momentum vector). On bodies other than the Earth, the quantity\ncan indicate boundary dates for the seasons:\n\n             Northern hemisphere           Southern hemisphere\n               0= Spring Equinox             0= Autumn Equinox\n              90= Summer Solstice           90= Winter Solstice\n             180= Autumn Equinox           180= Spring Equinox\n             270= Winter Solstice          270= Summer Solstice\n\nFor Earth seasons, instead see quantity #31 (\"ObsEcLon\") as seen from the\ngeocenter, with the Sun as a target.\n\nIf the target has no associated spin-pole model (common for asteroids and\ncomets), \"n.a.\" will be output. Units: DEGREES\n \n 'RA_(ICRF-a-apparnt)_DEC' =\n   Airless apparent right ascension and declination coordinates of the\ntarget in the ICRF reference frame, with down-leg light-time, gravitational\ndeflection of light, and stellar aberration.\n\n   Units:\n          RA : HH MM SS.ff{ffff} (hours-minutes-seconds of time)\n          DEC: DG MN SC.f{ffff}  (degrees-minutes-seconds of arc)\n \n 'I_dRA*cosD I_d(DEC)/dt' =\n  The angular rate of change in the targets' ICRF inertial reference-frame\napparent RA and DEC, with light-time, gravitational light deflection, and\nstellar aberrations. d(RA)/dt is multiplied by the cosine of declination to\nprovide a linear rate in the plane-of-sky. Units: ARCSECONDS PER HOUR\n \n 'Sky_motion  Sky_mot_PA  RelVel-ANG' =\n  Total apparent angular rate of the target in the plane-of-sky. \"Sky_mot_PA\"\nis the position angle of the target's direction of motion in the plane-of-sky,\nmeasured counter-clockwise from the apparent of-date north pole direction.\n\"RelVel-ANG\" is the flight path angle of the target's relative motion with\nrespect to the observer's line-of-sight, in the range [-90,+90], where positive\nvalues indicate motion away from the observer, negative values are toward the\nobserver:\n\n  -90 = target is moving directly toward the observer\n    0 = target is moving at right angles to the observer's line-of-sight\n  +90 = target is moving directly away from the observer\n\nUNITS:  ARCSECONDS/MINUTE, DEGREES, DEGREES\n \n 'Lun_Sky_Brt  sky_SNR' =\n  Sky brightness due to moonlight scattered by Earth's atmosphere at the\ntarget's position in the sky. \"sky_SNR\" is the visual signal-to-noise ratio\n(SNR) of the target's surface brightness relative to background sky. Output\nonly for topocentric Earth observers when both the Moon and target are above\nthe local horizon and the Sun is in astronomical twilight (or further) below\nthe horizon, and the target is not the Moon or Sun. If all conditions are\nnot met, \"n.a.\" is output. Galactic brightness, local sky light-pollution\nand weather are NOT considered. Lunar opposition surge is considered. The\nvalue returned is accurate under ideal conditions at the approximately 8-23%\nlevel, so is a useful but not definitive value.\n\n  If the target-body radius is also known, \"sky_SNR\" is output. This is the\napproximate visual signal-to-noise ratio of the target's brightness divided\nby lunar sky brightness. When sky_SNR < 1, the target is dimmer than the\nideal moonlight-scattering background sky, so unlikely to be detectable at\nvisual wavelengths. In practice, visibility requires sky_SNR > 1 and a\ndetector sensitive enough to reach the target's magnitude, even if it isn't\nwashed out by moonlight. When relating magnitudes and brightness values,\nkeep in mind their logarithmic relationship m2-m1 = -2.5*log_10(b2/b1).\n\n  UNITS: VISUAL MAGNITUDES / ARCSECOND^2, and unitless ratio\n \n 'UT1-UTC' =\n   Difference between the UT1 and UTC timescales (\"DUT1\"). UT1 is the\nEarth-rotation dependent mean solar time on the Greenwich meridian sometimes\nreferred to as GMT. UTC is a discontinuous timescale derived from the atomic\nTAI timescale, adjusted by leap seconds to provide a civil timescale\nmaintained within 0.9 seconds of UT1. Therefore, the difference UT1-UTC will\nhave discontinuities where leap-seconds are inserted in UTC. UTC is not\nwell-defined prior to 1962, so \"n.a.\" will be returned for earlier dates.\nThe UT1 here is a JPL fit to measurements of the Earth rotation which can\nchange rapidly and unpredictably at the 10^-4 second level due to tides and\nother factors affecting Earth rotation. Values for the 14 days prior to the\npresent date are considered provisional and may change at up to the 0.002\nsecond level as data accumulates, corresponding to about 1-meter (3-sigma)\nfor an Earth equatorial site. Values from the present date forward through\nthe next ~78 days are predictions. Beyond that prediction interval, the last\nprediction is taken as a constant for all future dates.  Units: SECONDS\n\nComputations by ...\n\n    Solar System Dynamics Group, Horizons On-Line Ephemeris System\n    4800 Oak Grove Drive, Jet Propulsion Laboratory\n    Pasadena, CA  91109   USA\n\n    General site: https://ssd.jpl.nasa.gov/\n    Mailing list: https://ssd.jpl.nasa.gov/email_list.html\n    System news : https://ssd.jpl.nasa.gov/horizons/news.html\n    User Guide  : https://ssd.jpl.nasa.gov/horizons/manual.html\n    Connect     : browser        https://ssd.jpl.nasa.gov/horizons/app.html#/x\n                  API            https://ssd-api.jpl.nasa.gov/doc/horizons.html\n                  command-line   telnet ssd.jpl.nasa.gov 6775\n                  e-mail/batch   https://ssd.jpl.nasa.gov/ftp/ssd/horizons_batch.txt\n                  scripts        https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS\n    Inquiries   : contact-ssd@jpl.nasa.gov\n\n********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************\n"}