******************************************************************************* JPL/HORIZONS (2023 FM) 2024-May-04 17:42:47 Rec #:50654499 (+COV) Soln.date: 2023-May-13_06:32:34 # obs: 287 (24 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2460030.5 ! 2023-Mar-27.00 (TDB) Residual RMS= .2102 EC= .6084384185448317 QR= .8444170391373095 TP= 2460080.1501296903 OM= 191.8783572136581 W= 60.10801675188667 IN= 12.51099306085532 A= 2.156537002428035 MA= 344.5478437963228 ADIST= 3.46865696571876 PER= 3.16697 N= .311220863 ANGMOM= .020047589 DAN= 1.04218 DDN= 1.94926 L= 251.387878 B= 10.8249058 MOID= .0198884 TP= 2023-May-15.6501296903 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 21.84 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#28, PHA OCC=2 radar( 3 delay, 3 Dop.) 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Sat May 4 17:42:47 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2023 FM) {source: JPL#28} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2023-Apr-02 00:00:00.0000 UT Stop time : A.D. 2023-Apr-08 00:00:00.0000 UT Step-size : 120 minutes ******************************************************************************* Target pole/equ : undefined Target radii : undefined Center geodetic : 0.0, 0.0, -6378.137 {E-lon(deg),Lat(deg),Alt(km)} Center cylindric: 0.0, 0.0, 0.0 {E-lon(deg),Dxy(km),Dz(km)} Center pole/equ : ITRF93 {East-longitude positive} Center radii : 6378.137, 6378.137, 6356.752 km {Equator_a, b, pole_c} Target primary : Sun Vis. interferer : MOON (R_eq= 1737.400) km {source: DE441} Rel. light bend : Sun {source: DE441} Rel. lght bnd GM: 1.3271E+11 km^3/s^2 Small-body perts: Yes {source: SB441-N16} Atmos refraction: NO (AIRLESS) RA format : HMS Time format : CAL Calendar mode : Mixed Julian/Gregorian EOP file : eop.240503.p240727 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-MAY-03. PREDICTS-> 2024-JUL-26 Units conversion: 1 au= 149597870.700 km, c= 299792.458 km/s, 1 day= 86400.0 s Table cut-offs 1: Elevation (-90.0deg=NO ),Airmass (>38.000=NO), Daylight (NO ) Table cut-offs 2: Solar elongation ( 0.0,180.0=NO ),Local Hour Angle( 0.0=NO ) Table cut-offs 3: RA/DEC angular rate ( 0.0=NO ) ******************************************************************************* Initial IAU76/J2000 heliocentric ecliptic osculating elements (au, days, deg.): EPOCH= 2460030.5 ! 2023-Mar-27.00 (TDB) Residual RMS= .2102 EC= .6084384185448317 QR= .8444170391373095 TP= 2460080.1501296903 OM= 191.8783572136581 W= 60.10801675188667 IN= 12.51099306085532 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-1.087990279323745E+00 Y=-8.697095172084784E-02 Z=-6.670359465480678E-02 VX= 9.843801826072840E-03 VY=-1.727121532023395E-02 VZ=-2.968164045720052E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 21.84 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ********************************************************************************************************************************* Date__(UT)__HR:MN R.A._____(ICRF)_____DEC APmag S-brt delta deldot S-O-T /r T-O-M/MN_Illu% Cnst ********************************************************************************************************************************* $$SOE 2023-Apr-02 00:00 12 22 36.86 -04 41 05.6 15.669 n.a. 0.04616197459611 -14.3215459 174.9436 /T 43.4/ 83.7470 Vir 2023-Apr-02 02:00 12 23 36.32 -04 20 55.1 15.627 n.a. 0.04547394295352 -14.2676675 175.1054 /T 42.4/ 84.3288 Vir 2023-Apr-02 04:00 12 24 37.57 -04 00 07.3 15.586 n.a. 0.04478855928392 -14.2114993 175.2440 /T 41.4/ 84.9024 Vir 2023-Apr-02 06:00 12 25 40.66 -03 38 40.5 15.546 n.a. 0.04410593704801 -14.1529052 175.3541 /T 40.5/ 85.4678 Vir 2023-Apr-02 08:00 12 26 45.69 -03 16 33.0 15.507 n.a. 0.04342619647144 -14.0917400 175.4301 /T 39.5/ 86.0247 Vir 2023-Apr-02 10:00 12 27 52.75 -02 53 43.2 15.470 n.a. 0.04274946500524 -14.0278487 175.4663 /T 38.6/ 86.5730 Vir 2023-Apr-02 12:00 12 29 01.91 -02 30 09.3 15.435 n.a. 0.04207587781992 -13.9610653 175.4577 /T 37.6/ 87.1126 Vir 2023-Apr-02 14:00 12 30 13.29 -02 05 49.3 15.402 n.a. 0.04140557833545 -13.8912129 175.3997 /T 36.7/ 87.6433 Vir 2023-Apr-02 16:00 12 31 26.97 -01 40 41.2 15.371 n.a. 0.04073871878959 -13.8181019 175.2894 /T 35.8/ 88.1650 Vir 2023-Apr-02 18:00 12 32 43.07 -01 14 42.9 15.343 n.a. 0.04007546084718 -13.7415300 175.1250 /T 34.8/ 88.6775 Vir 2023-Apr-02 20:00 12 34 01.71 -00 47 52.3 15.316 n.a. 0.03941597625263 -13.6612806 174.9063 /T 33.9/ 89.1806 Vir 2023-Apr-02 22:00 12 35 23.01 -00 20 07.1 15.293 n.a. 0.03876044752844 -13.5771222 174.6342 /T 33.0/ 89.6743 Vir 2023-Apr-03 00:00 12 36 47.08 +00 08 35.2 15.270 n.a. 0.03810906872205 -13.4888073 174.3107 /T 32.1/ 90.1583 Vir 2023-Apr-03 02:00 12 38 14.09 +00 38 17.0 15.250 n.a. 0.03746204620370 -13.3960712 173.9377 /T 31.2/ 90.6325 Vir 2023-Apr-03 04:00 12 39 44.16 +01 09 01.0 15.231 n.a. 0.03681959951732 -13.2986310 173.5178 /T 30.3/ 91.0968 Vir 2023-Apr-03 06:00 12 41 17.46 +01 40 49.9 15.213 n.a. 0.03618196228658 -13.1961844 173.0531 /T 29.5/ 91.5510 Vir 2023-Apr-03 08:00 12 42 54.14 +02 13 46.6 15.196 n.a. 0.03554938317805 -13.0884084 172.5456 /T 28.7/ 91.9950 Vir 2023-Apr-03 10:00 12 44 34.40 +02 47 54.0 15.180 n.a. 0.03492212692206 -12.9749582 171.9967 /T 27.9/ 92.4285 Vir 2023-Apr-03 12:00 12 46 18.41 +03 23 15.2 15.165 n.a. 0.03430047539247 -12.8554661 171.4078 /T 27.1/ 92.8515 Vir 2023-Apr-03 14:00 12 48 06.38 +03 59 53.4 15.150 n.a. 0.03368472874431 -12.7295401 170.7797 /T 26.4/ 93.2638 Vir 2023-Apr-03 16:00 12 49 58.53 +04 37 52.0 15.136 n.a. 0.03307520660827 -12.5967626 170.1128 /L 25.7/ 93.6653 Vir 2023-Apr-03 18:00 12 51 55.07 +05 17 14.2 15.123 n.a. 0.03247224933867 -12.4566900 169.4074 /L 25.1/ 94.0558 Vir 2023-Apr-03 20:00 12 53 56.26 +05 58 03.6 15.110 n.a. 0.03187621931043 -12.3088507 168.6635 /L 24.5/ 94.4351 Vir 2023-Apr-03 22:00 12 56 02.36 +06 40 23.8 15.098 n.a. 0.03128750225759 -12.1527454 167.8806 /L 24.0/ 94.8031 Vir 2023-Apr-04 00:00 12 58 13.64 +07 24 18.4 15.086 n.a. 0.03070650864383 -11.9878460 167.0584 /L 23.5/ 95.1598 Vir 2023-Apr-04 02:00 13 00 30.42 +08 09 51.0 15.075 n.a. 0.03013367505173 -11.8135951 166.1961 /L 23.2/ 95.5048 Vir 2023-Apr-04 04:00 13 02 53.01 +08 57 05.4 15.064 n.a. 0.02956946557340 -11.6294069 165.2929 /L 22.9/ 95.8381 Vir 2023-Apr-04 06:00 13 05 21.74 +09 46 05.2 15.054 n.a. 0.02901437318073 -11.4346675 164.3478 /L 22.7/ 96.1596 Vir 2023-Apr-04 08:00 13 07 57.01 +10 36 54.1 15.045 n.a. 0.02846892104772 -11.2287360 163.3598 /L 22.7/ 96.4690 Vir 2023-Apr-04 10:00 13 10 39.18 +11 29 35.6 15.036 n.a. 0.02793366379092 -11.0109470 162.3278 /L 22.7/ 96.7663 Vir 2023-Apr-04 12:00 13 13 28.70 +12 24 13.0 15.029 n.a. 0.02740918858700 -10.7806135 161.2505 /L 22.9/ 97.0513 Vir 2023-Apr-04 14:00 13 16 26.01 +13 20 49.5 15.022 n.a. 0.02689611611807 -10.5370309 160.1268 /L 23.2/ 97.3239 Vir 2023-Apr-04 16:00 13 19 31.60 +14 19 27.9 15.017 n.a. 0.02639510128695 -10.2794827 158.9554 /L 23.6/ 97.5840 Vir 2023-Apr-04 18:00 13 22 45.99 +15 20 10.7 15.012 n.a. 0.02590683363471 -10.0072473 157.7350 /L 24.2/ 97.8314 Com 2023-Apr-04 20:00 13 26 09.73 +16 22 59.8 15.009 n.a. 0.02543203738374 -9.7196066 156.4645 /L 24.9/ 98.0659 Com 2023-Apr-04 22:00 13 29 43.42 +17 27 56.6 15.008 n.a. 0.02497147101971 -9.4158567 155.1428 /L 25.7/ 98.2875 Com 2023-Apr-05 00:00 13 33 27.69 +18 35 01.8 15.008 n.a. 0.02452592631758 -9.0953202 153.7690 /L 26.6/ 98.4961 Com 2023-Apr-05 02:00 13 37 23.22 +19 44 15.0 15.010 n.a. 0.02409622670979 -8.7573613 152.3420 /L 27.7/ 98.6914 Boo 2023-Apr-05 04:00 13 41 30.72 +20 55 35.0 15.014 n.a. 0.02368322489053 -8.4014027 150.8615 /L 28.8/ 98.8734 Boo 2023-Apr-05 06:00 13 45 50.96 +22 08 59.3 15.020 n.a. 0.02328779954998 -8.0269446 149.3267 /L 30.1/ 99.0420 Boo 2023-Apr-05 08:00 13 50 24.76 +23 24 24.1 15.028 n.a. 0.02291085113761 -7.6335859 147.7378 /L 31.5/ 99.1971 Boo 2023-Apr-05 10:00 13 55 12.94 +24 41 43.9 15.038 n.a. 0.02255329656567 -7.2210470 146.0947 /L 32.9/ 99.3384 Boo 2023-Apr-05 12:00 14 00 16.42 +26 00 51.6 15.051 n.a. 0.02221606278486 -6.7891940 144.3981 /L 34.5/ 99.4660 Boo 2023-Apr-05 14:00 14 05 36.11 +27 21 38.1 15.068 n.a. 0.02190007919421 -6.3380627 142.6489 /L 36.1/ 99.5798 Boo 2023-Apr-05 16:00 14 11 12.98 +28 43 52.3 15.087 n.a. 0.02160626888810 -5.8678826 140.8484 /L 37.8/ 99.6795 Boo 2023-Apr-05 18:00 14 17 08.01 +30 07 20.9 15.109 n.a. 0.02133553879437 -5.3790990 138.9987 /L 39.6/ 99.7652 Boo 2023-Apr-05 20:00 14 23 22.20 +31 31 48.2 15.134 n.a. 0.02108876881845 -4.8723918 137.1020 /L 41.4/ 99.8366 Boo 2023-Apr-05 22:00 14 29 56.53 +32 56 56.4 15.163 n.a. 0.02086680017565 -4.3486903 135.1614 /L 43.3/ 99.8938 Boo 2023-Apr-06 00:00 14 36 51.98 +34 22 25.2 15.196 n.a. 0.02067042316510 -3.8091812 133.1803 /L 45.3/ 99.9367 Boo 2023-Apr-06 02:00 14 44 09.47 +35 47 52.0 15.233 n.a. 0.02050036470764 -3.2553104 131.1627 /L 47.3/ 99.9651 Boo 2023-Apr-06 04:00 14 51 49.85 +37 12 52.1 15.273 n.a. 0.02035727603022 -2.6887752 129.1133 /L 49.3/ 99.9789 Boo 2023-Apr-06 06:00 14 59 53.83 +38 36 59.3 15.318 n.a. 0.02024172092477 -2.1115076 127.0368 /L 51.3/ 99.9782 Boo 2023-Apr-06 08:00 15 08 22.00 +39 59 45.3 15.366 n.a. 0.02015416503194 -1.5256487 124.9389 /L 53.4/ 99.9627 Boo 2023-Apr-06 10:00 15 17 14.72 +41 20 41.4 15.418 n.a. 0.02009496659552 -0.9335135 122.8252 /L 55.5/ 99.9325 Boo 2023-Apr-06 12:00 15 26 32.10 +42 39 17.8 15.475 n.a. 0.02006436909697 -0.3375481 120.7018 /L 57.6/ 99.8875 Boo 2023-Apr-06 14:00 15 36 13.94 +43 55 05.0 15.536 n.a. 0.02006249611282 0.2597196 118.5748 /L 59.7/ 99.8276 Boo 2023-Apr-06 16:00 15 46 19.66 +45 07 34.3 15.600 n.a. 0.02008934864214 0.8557329 116.4504 /L 61.7/ 99.7528 Boo 2023-Apr-06 18:00 15 56 48.28 +46 16 18.3 15.668 n.a. 0.02014480503577 1.4479607 114.3348 /L 63.8/ 99.6630 Her 2023-Apr-06 20:00 16 07 38.35 +47 20 51.6 15.740 n.a. 0.02022862353104 2.0339511 112.2341 /L 65.8/ 99.5581 Her 2023-Apr-06 22:00 16 18 47.96 +48 20 51.9 15.815 n.a. 0.02034044726827 2.6113807 110.1540 /L 67.8/ 99.4382 Her 2023-Apr-07 00:00 16 30 14.68 +49 16 00.2 15.894 n.a. 0.02047981154790 3.1780978 108.0998 /L 69.8/ 99.3032 Her 2023-Apr-07 02:00 16 41 55.65 +50 06 01.6 15.975 n.a. 0.02064615299072 3.7321581 106.0768 /L 71.7/ 99.1530 Her 2023-Apr-07 04:00 16 53 47.59 +50 50 45.4 16.060 n.a. 0.02083882019465 4.2718512 104.0893 /L 73.5/ 98.9877 Her 2023-Apr-07 06:00 17 05 46.86 +51 30 05.8 16.147 n.a. 0.02105708544326 4.7957177 102.1414 /L 75.3/ 98.8072 Dra 2023-Apr-07 08:00 17 17 49.63 +52 04 01.6 16.236 n.a. 0.02130015701474 5.3025572 100.2366 /L 77.1/ 98.6115 Dra 2023-Apr-07 10:00 17 29 51.91 +52 32 36.1 16.327 n.a. 0.02156719166114 5.7914276 98.3779 /L 78.7/ 98.4005 Dra 2023-Apr-07 12:00 17 41 49.76 +52 55 57.3 16.420 n.a. 0.02185730687137 6.2616370 96.5676 /L 80.3/ 98.1744 Dra 2023-Apr-07 14:00 17 53 39.37 +53 14 16.6 16.514 n.a. 0.02216959259176 6.7127293 94.8077 /L 81.9/ 97.9331 Dra 2023-Apr-07 16:00 18 05 17.19 +53 27 49.0 16.610 n.a. 0.02250312214598 7.1444659 93.0995 /L 83.3/ 97.6765 Dra 2023-Apr-07 18:00 18 16 40.03 +53 36 52.0 16.706 n.a. 0.02285696216774 7.5568031 91.4439 /L 84.7/ 97.4047 Dra 2023-Apr-07 20:00 18 27 45.13 +53 41 44.9 16.803 n.a. 0.02323018142748 7.9498689 89.8414 /L 86.0/ 97.1178 Dra 2023-Apr-07 22:00 18 38 30.20 +53 42 48.7 16.901 n.a. 0.02362185849570 8.3239382 88.2922 /L 87.3/ 96.8157 Dra 2023-Apr-08 00:00 18 48 53.44 +53 40 24.6 16.999 n.a. 0.02403108823719 8.6794088 86.7960 /L 88.4/ 96.4985 Dra $$EOE ********************************************************************************************************************************* Column meaning: TIME Times PRIOR to 1962 are UT1, a mean-solar time closely related to the prior but now-deprecated GMT. Times AFTER 1962 are in UTC, the current civil or "wall-clock" time-scale. UTC is kept within 0.9 seconds of UT1 using integer leap-seconds for 1972 and later years. Conversion from the internal Barycentric Dynamical Time (TDB) of solar system dynamics to the non-uniform civil UT time-scale requested for output has not been determined for UTC times after the next July or January 1st. Therefore, the last known leap-second is used as a constant over future intervals. Time tags refer to the UT time-scale conversion from TDB on Earth regardless of observer location within the solar system, although clock rates may differ due to the local gravity field and no analog to "UT" may be defined for that location. Any 'b' symbol in the 1st-column denotes a B.C. date. First-column blank (" ") denotes an A.D. date. CALENDAR SYSTEM Mixed calendar mode was active such that calendar dates after AD 1582-Oct-15 (if any) are in the modern Gregorian system. Dates prior to 1582-Oct-5 (if any) are in the Julian calendar system, which is automatically extended for dates prior to its adoption on 45-Jan-1 BC. The Julian calendar is useful for matching historical dates. The Gregorian calendar more accurately corresponds to the Earth's orbital motion and seasons. A "Gregorian-only" calendar mode is available if such physical events are the primary interest. NOTE: "n.a." in output means quantity "not available" at the print-time. 'R.A._____(ICRF)_____DEC' = Astrometric right ascension and declination of the target center with respect to the observing site (coordinate origin) in the reference frame of the planetary ephemeris (ICRF). Compensated for down-leg light-time delay aberration. Units: RA in hours-minutes-seconds of time, HH MM SS.ff{ffff} DEC in degrees-minutes-seconds of arc, sDD MN SC.f{ffff} 'APmag S-brt' = The asteroids' approximate apparent airless visual magnitude and surface brightness using the standard IAU H-G system magnitude model: APmag = H + 5*log10(delta) + 5*log10(r) - 2.5*log10((1-G)*phi_1 + G*phi_2) For solar phase angles >90 deg, the error could exceed 1 magnitude. For phase angles >120 degrees, output values are rounded to the nearest integer to indicate error could be large and unknown. For Earth-based observers, the estimated dimming due to atmospheric absorption (extinction) is available as a separate, requestable quantity. Surface brightness is the average airless visual magnitude of a square-arcsecond of the illuminated portion of the apparent disk. It is computed only if the target radius is known. Units: MAGNITUDES & MAGNITUDES PER SQUARE ARCSECOND 'delta deldot' = Apparent range ("delta", light-time aberrated) and range-rate ("delta-dot") of the target center relative to the observer. A positive "deldot" means the target center is moving away from the observer, negative indicates movement toward the observer. Units: AU and KM/S 'S-O-T /r' = Sun-Observer-Target apparent SOLAR ELONGATION ANGLE seen from the observers' location at print-time. The '/r' column provides a code indicating the targets' apparent position relative to the Sun in the observers' sky, as described below: Case A: For an observing location on the surface of a rotating body, that body rotational sense is considered: /T indicates target TRAILS Sun (evening sky: rises and sets AFTER Sun) /L indicates target LEADS Sun (morning sky: rises and sets BEFORE Sun) Case B: For an observing point that does not have a rotational model (such as a spacecraft), the "leading" and "trailing" condition is defined by the observers' heliocentric ORBITAL motion: * If continuing in the observers' current direction of heliocentric motion would encounter the targets' apparent longitude first, followed by the Sun's, the target LEADS the Sun as seen by the observer. * If the Sun's apparent longitude would be encountered first, followed by the targets', the target TRAILS the Sun. Two other codes can be output: /* indicates observer is Sun-centered (undefined) /? Target is aligned with Sun center (no lead or trail) The S-O-T solar elongation angle is numerically the minimum separation angle of the Sun and target in the sky in any direction. It does NOT indicate the amount of separation in the leading or trailing directions, which would be defined along the equator of a spherical coordinate system. Units: DEGREES 'T-O-M/MN_Illu%' = Target-Observer-Moon LUNAR ELONGATION angle and illuminated percentage. The apparent lunar elongation angle between target body center and Moon center, seen from the observing site, along with fraction of the lunar disk illuminated by the Sun. A negative lunar elongation angle indicates the target center is behind the Moon. Units: DEGREES & PERCENT 'Cnst' = Constellation ID; the 3-letter abbreviation for the name of the constellation containing the target centers' astrometric position, as defined by IAU (1930) boundary delineation. See documentation for list of abbreviations. Computations by ... Solar System Dynamics Group, Horizons On-Line Ephemeris System 4800 Oak Grove Drive, Jet Propulsion Laboratory Pasadena, CA 91109 USA General site: https://ssd.jpl.nasa.gov/ Mailing list: https://ssd.jpl.nasa.gov/email_list.html System news : https://ssd.jpl.nasa.gov/horizons/news.html User Guide : https://ssd.jpl.nasa.gov/horizons/manual.html Connect : browser https://ssd.jpl.nasa.gov/horizons/app.html#/x API https://ssd-api.jpl.nasa.gov/doc/horizons.html command-line telnet ssd.jpl.nasa.gov 6775 e-mail/batch https://ssd.jpl.nasa.gov/ftp/ssd/hrzn_batch.txt scripts https://ssd.jpl.nasa.gov/ftp/ssd/SCRIPTS Author : Jon.D.Giorgini@jpl.nasa.gov ********************************************************************************************************************************* !$$SOF COMMAND = '2023 FM' START_TIME = '2023-04-02' STOP_TIME = '2023-04-08' STEP_SIZE = '2 hours' QUANTITIES = '1,9,20,23,25,29'