******************************************************************************* JPL/HORIZONS (2009 JF1) 2024-May-01 12:13:41 Rec #:50091499 (+COV) Soln.date: 2022-Feb-07_08:33:36 # obs: 20 (1 days) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2454956.5 ! 2009-May-05.00 (TDB) Residual RMS= .19786 EC= .7386046617161813 QR= .4903258367735946 TP= 2455004.8858384411 OM= 46.00252425519285 W= 281.3253332064018 IN= 5.996995190395809 A= 1.875801764456897 MA= 341.4372662788185 ADIST= 3.2612776921402 PER= 2.56914 N= .383639807 ANGMOM= .015882697 DAN= .7445000000000001 DDN= .9971100000000001 L= 327.3885543 B= -5.8798055 MOID= .00140143 TP= 2009-Jun-22.3858384411 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 27.76 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ASTEROID comments: 1: soln ref.= JPL#8, OCC=7 2: source=ORB ******************************************************************************* ******************************************************************************* Ephemeris / WWW_USER Wed May 1 12:13:41 2024 Pasadena, USA / Horizons ******************************************************************************* Target body name: (2009 JF1) {source: JPL#8} Center body name: Earth (399) {source: DE441} Center-site name: GEOCENTRIC ******************************************************************************* Start time : A.D. 2022-May-01 00:00:00.0000 UT Stop time : A.D. 2022-May-16 00:00:00.0000 UT Step-size : 180 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.240430.p240724 EOP coverage : DATA-BASED 1962-JAN-20 TO 2024-APR-30. PREDICTS-> 2024-JUL-23 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= 2454956.5 ! 2009-May-05.00 (TDB) Residual RMS= .19786 EC= .7386046617161813 QR= .4903258367735946 TP= 2455004.8858384411 OM= 46.00252425519285 W= 281.3253332064018 IN= 5.996995190395809 Equivalent ICRF heliocentric cartesian coordinates (au, au/d): X=-7.271790223718233E-01 Y=-6.569455244533324E-01 Z=-2.817776070048898E-01 VX= 2.042483160870937E-02 VY=-8.468982146937745E-04 VZ=-2.180295539553751E-03 Asteroid physical parameters (km, seconds, rotational period in hours): GM= n.a. RAD= n.a. ROTPER= n.a. H= 27.76 G= .150 B-V= n.a. ALBEDO= n.a. STYP= n.a. ******************************************************************************************* Date__(UT)__HR:MN APmag S-brt delta deldot RNG_3sigma RNGRT_3sig ******************************************************************************************* $$SOE 2022-May-01 00:00 26.129 n.a. 0.22298457398457 -14.3936422 20914619.2 2.5300750 2022-May-01 03:00 26.126 n.a. 0.22194837014064 -14.3096472 20976091.8 2.5287627 2022-May-01 06:00 26.123 n.a. 0.22091825331126 -14.2250190 21037280.7 2.5272842 2022-May-01 09:00 26.121 n.a. 0.21989426948217 -14.1397503 21098170.4 2.5256357 2022-May-01 12:00 26.118 n.a. 0.21887646517976 -14.0538335 21158744.7 2.5238139 2022-May-01 15:00 26.115 n.a. 0.21786488747344 -13.9672611 21218987.1 2.5218152 2022-May-01 18:00 26.113 n.a. 0.21685958397756 -13.8800254 21278880.8 2.5196359 2022-May-01 21:00 26.110 n.a. 0.21586060285303 -13.7921191 21338408.5 2.5172724 2022-May-02 00:00 26.108 n.a. 0.21486799280864 -13.7035343 21397552.7 2.5147209 2022-May-02 03:00 26.105 n.a. 0.21388180310235 -13.6142637 21456295.5 2.5119777 2022-May-02 06:00 26.103 n.a. 0.21290208354159 -13.5242994 21514618.3 2.5090391 2022-May-02 09:00 26.101 n.a. 0.21192888448396 -13.4336339 21572502.5 2.5059010 2022-May-02 12:00 26.098 n.a. 0.21096225683707 -13.3422597 21629928.9 2.5025597 2022-May-02 15:00 26.096 n.a. 0.21000225205816 -13.2501690 21686877.9 2.4990112 2022-May-02 18:00 26.094 n.a. 0.20904892215328 -13.1573543 21743329.7 2.4952514 2022-May-02 21:00 26.092 n.a. 0.20810231967615 -13.0638080 21799263.8 2.4912765 2022-May-03 00:00 26.090 n.a. 0.20716249772639 -12.9695226 21854659.5 2.4870822 2022-May-03 03:00 26.089 n.a. 0.20622950994745 -12.8744906 21909495.7 2.4826645 2022-May-03 06:00 26.087 n.a. 0.20530341052404 -12.7787044 21963750.8 2.4780192 2022-May-03 09:00 26.085 n.a. 0.20438425417905 -12.6821567 22017402.8 2.4731422 2022-May-03 12:00 26.084 n.a. 0.20347209616991 -12.5848400 22070429.3 2.4680291 2022-May-03 15:00 26.082 n.a. 0.20256699228449 -12.4867472 22122807.6 2.4626758 2022-May-03 18:00 26.081 n.a. 0.20166899883647 -12.3878708 22174514.5 2.4570779 2022-May-03 21:00 26.080 n.a. 0.20077817265995 -12.2882038 22225526.3 2.4512310 2022-May-04 00:00 26.078 n.a. 0.19989457110381 -12.1877391 22275819.0 2.4451308 2022-May-04 03:00 26.077 n.a. 0.19901825202513 -12.0864696 22325368.3 2.4387730 2022-May-04 06:00 26.076 n.a. 0.19814927378219 -11.9843885 22374149.3 2.4321530 2022-May-04 09:00 26.076 n.a. 0.19728769522671 -11.8814891 22422136.8 2.4252664 2022-May-04 12:00 26.075 n.a. 0.19643357569561 -11.7777645 22469305.2 2.4181087 2022-May-04 15:00 26.074 n.a. 0.19558697500172 -11.6732084 22515628.4 2.4106754 2022-May-04 18:00 26.074 n.a. 0.19474795342429 -11.5678144 22561080.2 2.4029619 2022-May-04 21:00 26.073 n.a. 0.19391657169829 -11.4615761 22605633.6 2.3949639 2022-May-05 00:00 26.073 n.a. 0.19309289100338 -11.3544876 22649261.6 2.3866765 2022-May-05 03:00 26.073 n.a. 0.19227697295186 -11.2465429 22691936.6 2.3780954 2022-May-05 06:00 26.073 n.a. 0.19146887957597 -11.1377362 22733630.8 2.3692158 2022-May-05 09:00 26.073 n.a. 0.19066867331429 -11.0280622 22774315.8 2.3600332 2022-May-05 12:00 26.073 n.a. 0.18987641699760 -10.9175154 22813963.0 2.3505430 2022-May-05 15:00 26.074 n.a. 0.18909217383353 -10.8060907 22852543.7 2.3407406 2022-May-05 18:00 26.074 n.a. 0.18831600739080 -10.6937832 22890028.3 2.3306214 2022-May-05 21:00 26.075 n.a. 0.18754798158222 -10.5805883 22926387.5 2.3201807 2022-May-06 00:00 26.076 n.a. 0.18678816064714 -10.4665017 22961591.3 2.3094140 2022-May-06 03:00 26.076 n.a. 0.18603660913292 -10.3515191 22995609.4 2.2983167 2022-May-06 06:00 26.077 n.a. 0.18529339187539 -10.2356367 23028411.5 2.2868842 2022-May-06 09:00 26.079 n.a. 0.18455857397863 -10.1188509 23059966.8 2.2751120 2022-May-06 12:00 26.080 n.a. 0.18383222079376 -10.0011585 23090244.3 2.2629956 2022-May-06 15:00 26.082 n.a. 0.18311439789677 -9.8825565 23119212.8 2.2505304 2022-May-06 18:00 26.083 n.a. 0.18240517106559 -9.7630423 23146840.9 2.2377120 2022-May-06 21:00 26.085 n.a. 0.18170460625601 -9.6426136 23173096.8 2.2245358 2022-May-07 00:00 26.087 n.a. 0.18101276957686 -9.5212684 23197948.9 2.2109977 2022-May-07 03:00 26.089 n.a. 0.18032972726432 -9.3990052 23221365.1 2.1970931 2022-May-07 06:00 26.092 n.a. 0.17965554565505 -9.2758227 23243313.4 2.1828178 2022-May-07 09:00 26.094 n.a. 0.17899029115873 -9.1517202 23263761.4 2.1681675 2022-May-07 12:00 26.097 n.a. 0.17833403022933 -9.0266972 23282676.8 2.1531380 2022-May-07 15:00 26.100 n.a. 0.17768682933584 -8.9007537 23300027.3 2.1377252 2022-May-07 18:00 26.103 n.a. 0.17704875493181 -8.7738901 23315780.3 2.1219250 2022-May-07 21:00 26.106 n.a. 0.17641987342412 -8.6461074 23329903.5 2.1057334 2022-May-08 00:00 26.109 n.a. 0.17580025114090 -8.5174068 23342364.3 2.0891466 2022-May-08 03:00 26.113 n.a. 0.17518995429853 -8.3877901 23353130.4 2.0721606 2022-May-08 06:00 26.117 n.a. 0.17458904896775 -8.2572596 23362169.3 2.0547717 2022-May-08 09:00 26.120 n.a. 0.17399760103909 -8.1258180 23369448.8 2.0369763 2022-May-08 12:00 26.125 n.a. 0.17341567618732 -7.9934685 23374936.8 2.0187708 2022-May-08 15:00 26.129 n.a. 0.17284333983529 -7.8602149 23378601.1 2.0001517 2022-May-08 18:00 26.134 n.a. 0.17228065711682 -7.7260614 23380410.1 1.9811158 2022-May-08 21:00 26.138 n.a. 0.17172769283904 -7.5910128 23380332.1 1.9616597 2022-May-09 00:00 26.143 n.a. 0.17118451144402 -7.4550745 23378335.8 1.9417804 2022-May-09 03:00 26.149 n.a. 0.17065117696949 -7.3182524 23374390.2 1.9214749 2022-May-09 06:00 26.154 n.a. 0.17012775300937 -7.1805527 23368464.4 1.9007403 2022-May-09 09:00 26.160 n.a. 0.16961430267331 -7.0419826 23360528.1 1.8795739 2022-May-09 12:00 26.166 n.a. 0.16911088854596 -6.9025496 23350551.4 1.8579732 2022-May-09 15:00 26.172 n.a. 0.16861757264558 -6.7622617 23338504.7 1.8359357 2022-May-09 18:00 26.178 n.a. 0.16813441638228 -6.6211278 23324358.8 1.8134591 2022-May-09 21:00 26.185 n.a. 0.16766148051592 -6.4791571 23308085.3 1.7905413 2022-May-10 00:00 26.192 n.a. 0.16719882511351 -6.3363595 23289656.1 1.7671804 2022-May-10 03:00 26.199 n.a. 0.16674650950642 -6.1927456 23269043.6 1.7433746 2022-May-10 06:00 26.206 n.a. 0.16630459224744 -6.0483262 23246221.2 1.7191222 2022-May-10 09:00 26.214 n.a. 0.16587313106743 -5.9031132 23221162.6 1.6944219 2022-May-10 12:00 26.222 n.a. 0.16545218283212 -5.7571189 23193842.3 1.6692723 2022-May-10 15:00 26.230 n.a. 0.16504180349868 -5.6103560 23164235.5 1.6436724 2022-May-10 18:00 26.238 n.a. 0.16464204807242 -5.4628381 23132318.4 1.6176213 2022-May-10 21:00 26.247 n.a. 0.16425297056352 -5.3145793 23098067.7 1.5911183 2022-May-11 00:00 26.255 n.a. 0.16387462394392 -5.1655942 23061461.0 1.5641629 2022-May-11 03:00 26.265 n.a. 0.16350706010454 -5.0158981 23022477.1 1.5367548 2022-May-11 06:00 26.274 n.a. 0.16315032981258 -4.8655068 22981095.3 1.5088940 2022-May-11 09:00 26.284 n.a. 0.16280448266934 -4.7144368 22937296.1 1.4805805 2022-May-11 12:00 26.294 n.a. 0.16246956706864 -4.5627051 22891061.0 1.4518148 2022-May-11 15:00 26.304 n.a. 0.16214563015539 -4.4103293 22842372.3 1.4225972 2022-May-11 18:00 26.315 n.a. 0.16183271778507 -4.2573274 22791213.7 1.3929287 2022-May-11 21:00 26.325 n.a. 0.16153087448377 -4.1037183 22737569.7 1.3628102 2022-May-12 00:00 26.337 n.a. 0.16124014340897 -3.9495210 22681426.0 1.3322428 2022-May-12 03:00 26.348 n.a. 0.16096056631113 -3.7947553 22622769.6 1.3012280 2022-May-12 06:00 26.360 n.a. 0.16069218349629 -3.6394415 22561588.6 1.2697674 2022-May-12 09:00 26.372 n.a. 0.16043503378948 -3.4836004 22497872.1 1.2378630 2022-May-12 12:00 26.384 n.a. 0.16018915449934 -3.3272531 22431610.8 1.2055167 2022-May-12 15:00 26.397 n.a. 0.15995458138373 -3.1704214 22362796.4 1.1727308 2022-May-12 18:00 26.410 n.a. 0.15973134861653 -3.0131275 22291421.9 1.1395080 2022-May-12 21:00 26.423 n.a. 0.15951948875592 -2.8553939 22217481.8 1.1058509 2022-May-13 00:00 26.436 n.a. 0.15931903271365 -2.6972436 22140971.7 1.0717625 2022-May-13 03:00 26.450 n.a. 0.15913000972597 -2.5387000 22061888.6 1.0372460 2022-May-13 06:00 26.465 n.a. 0.15895244732593 -2.3797869 21980230.9 1.0023049 2022-May-13 09:00 26.479 n.a. 0.15878637131715 -2.2205284 21895998.3 0.9669426 2022-May-13 12:00 26.494 n.a. 0.15863180574919 -2.0609490 21809191.9 0.9311631 2022-May-13 15:00 26.509 n.a. 0.15848877289469 -1.9010734 21719814.3 0.8949703 2022-May-13 18:00 26.525 n.a. 0.15835729322791 -1.7409267 21627869.3 0.8583686 2022-May-13 21:00 26.541 n.a. 0.15823738540537 -1.5805341 21533362.3 0.8213624 2022-May-14 00:00 26.557 n.a. 0.15812906624789 -1.4199212 21436299.8 0.7839562 2022-May-14 03:00 26.573 n.a. 0.15803235072469 -1.2591137 21336690.0 0.7461550 2022-May-14 06:00 26.590 n.a. 0.15794725193942 -1.0981376 21234542.3 0.7079638 2022-May-14 09:00 26.607 n.a. 0.15787378111777 -0.9370189 21129867.7 0.6693877 2022-May-14 12:00 26.625 n.a. 0.15781194759733 -0.7757838 21022678.3 0.6304322 2022-May-14 15:00 26.643 n.a. 0.15776175881927 -0.6144587 20912987.7 0.5911028 2022-May-14 18:00 26.661 n.a. 0.15772322032199 -0.4530699 20800811.0 0.5514053 2022-May-14 21:00 26.680 n.a. 0.15769633573674 -0.2916439 20686164.5 0.5113454 2022-May-15 00:00 26.699 n.a. 0.15768110678540 -0.1302071 20569065.8 0.4709294 2022-May-15 03:00 26.718 n.a. 0.15767753328009 0.0312141 20449533.8 0.4301632 2022-May-15 06:00 26.738 n.a. 0.15768561312498 0.1925933 20327588.8 0.3890533 2022-May-15 09:00 26.758 n.a. 0.15770534232002 0.3539040 20203252.4 0.3476062 2022-May-15 12:00 26.778 n.a. 0.15773671496682 0.5151202 20076547.2 0.3058283 2022-May-15 15:00 26.799 n.a. 0.15777972327641 0.6762156 19947497.3 0.2637264 2022-May-15 18:00 26.820 n.a. 0.15783435757912 0.8371644 19816127.7 0.2213074 2022-May-15 21:00 26.842 n.a. 0.15790060633650 0.9979407 19682464.8 0.1785780 2022-May-16 00:00 26.864 n.a. 0.15797845615514 1.1585189 19546536.1 0.1355454 $$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. STATISTICAL UNCERTAINTIES Output includes formal +/- 3 standard-deviation statistical orbit uncertainty quantities. There is a 99.7% (1-D) or 98.9% (2-D) chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as timing, reduction or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters. '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 'RNG_3sigma RNGRT_3sig' = Range and range rate (radial velocity) formal 3-standard-deviation uncertainties. Units: KM, KM/S 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 = '2009 JF1' START_TIME = '2022-05-01' STOP_TIME = '2022-05-16' STEP_SIZE = '3 hour' QUANTITIES = '09,20,39'