141593 (2002 HK12)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5286540189 ± 1.47e-09
Semi-major axis (a)2.0022187484 AU ± 2.90e-10
Inclination (i)2.34839207° ± 7.71e-07
Long. of Asc. Node (Ω)306.97306043° ± 2.47e-05
Arg. of Perihelion (ω)2.27812696° ± 2.48e-05
Mean Anomaly (M)80.40266917° ± 4.58e-07
Mean Motion (n)0.3478924395°/day ± 7.56e-11
Perihelion dist (q)0.94373776 AU ± 2.95e-09
Aphelion dist (Q)3.06069974 AU ± 2.98e-09
Orbital Period2.83313511 yr ± 6.16e-10
Physical Parameters
H (abs. magnitude)18.32
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.333″
Uncertainty0
Orbit TypeApollo
MOID0.023961 AU
Observations Used1413
Radar Obs Used5
Oppositions22
Arc Total1985-2025
First Observation Used1985-06-11
Last Observation Used2025-11-28
Observations (1843)
Date Type RA Dec Mag Band Observatory
2019-10-15 21:14:26 s 1 -134805.14 7 +333956.49 1720.0 C57
2019-10-15 21:44:26 S 02 06 28.757 +23 39 55.55 V C57
2019-10-15 21:44:26 s 1 -135629.09 6 +333027.06 8980.0 C57
2019-10-15 22:14:26 S 02 06 26.640 +23 39 33.52 V C57
2019-10-15 22:14:26 s 1 -136449.29 2 +332088.33 8440.0 C57
2019-10-15 22:44:26 S 02 06 24.648 +23 39 11.56 V C57
2019-10-15 22:44:26 s 1 -137265.69 5 +331140.30 10.0 C57
2019-10-17 11:54:40 C 02 05 41.53 +23 09 23.0 V T08
2019-10-17 11:59:32 C 02 05 41.15 +23 09 19.7 V T08
2019-10-17 12:08:32 C 02 05 40.43 +23 09 13.3 V T08
2019-10-17 12:33:58 C 02 05 38.44 +23 08 55.3 V T08
2019-10-19 10:15:11 C 02 02 30.14 +22 37 30.5 V 703
2019-10-19 10:23:00 C 02 02 29.58 +22 37 24.5 V 703
2019-10-19 10:30:48 C 02 02 29.04 +22 37 18.9 V 703
2019-10-19 10:38:36 C 02 02 28.46 +22 37 13.9 V 703
2019-10-19 10:48:30 C 02 02 28.88 +22 37 15.8 V T05
2019-10-19 10:52:46 C 02 02 28.57 +22 37 12.7 V T05
2019-10-19 11:00:58 C 02 02 27.97 +22 37 07.2 V T05
2019-10-19 11:15:37 C 02 02 26.85 +22 36 57.4 V T05
2019-10-21 07:18:11 C 01 59 37.56 +22 07 27.7 V 703
2019-10-21 07:26:48 C 01 59 36.99 +22 07 22.1 V 703
2019-10-21 07:35:37 C 01 59 36.34 +22 07 15.9 V 703
2019-10-21 07:44:06 C 01 59 35.78 +22 07 10.6 V 703
2019-10-21 10:52:38 C 01 59 24.02 +22 05 12.4 V T08
2019-10-21 10:57:30 C 01 59 23.68 +22 05 09.4 V T08
2019-10-21 11:11:35 C 01 59 22.71 +22 04 59.9 V T08
2019-10-21 11:29:22 C 01 59 21.47 +22 04 48.1 V T08
2019-10-22 06:56:36 C 01 58 11.28 +21 52 01.1 V 703
2019-10-22 07:04:09 C 01 58 10.76 +21 51 56.1 V 703
2019-10-22 07:11:44 C 01 58 10.20 +21 51 51.6 V 703
2019-10-22 07:19:18 C 01 58 09.70 +21 51 45.7 V 703
2019-10-22 12:14:26 S 01 57 27.070 +21 51 11.30 V C57
2019-10-22 12:14:26 s 1 +151390.24 2 +184125.26 5370.0 C57
2019-10-22 12:44:26 S 01 57 24.758 +21 50 52.84 V C57
2019-10-22 12:44:26 s 1 +151038.82 8 +186353.09 1880.0 C57
2019-10-22 13:14:26 S 01 57 22.289 +21 50 34.55 V C57
2019-10-22 13:14:26 s 1 +150674.15 9 +188564.46 5240.0 C57
2019-10-22 13:44:26 S 01 57 20.004 +21 50 16.48 V C57
2019-10-22 13:44:26 s 1 +150296.50 3 +190759.48 6230.0 C57
2019-10-22 14:14:26 S 01 57 17.693 +21 49 59.02 V C57
2019-10-22 14:14:26 s 1 +149906.11 9 +192938.25 5630.0 C57
2019-10-22 15:44:26 S 01 57 10.483 +21 49 04.19 V C57
2019-10-22 15:44:26 s 1 +148661.10 3 +199377.95 1660.0 C57
2019-10-22 16:14:26 S 01 57 07.973 +21 48 43.38 V C57
2019-10-22 16:14:26 s 1 +148222.27 8 +201492.64 2000.0 C57
2019-10-22 16:44:26 S 01 57 05.741 +21 48 27.72 V C57
2019-10-22 16:44:26 s 1 +147771.92 9 +203591.55 4310.0 C57
2019-10-22 17:14:26 S 01 57 03.276 +21 48 08.53 V C57
2019-10-22 17:14:26 s 1 +147310.27 8 +205674.77 9270.0 C57
2019-10-22 17:44:26 S 01 57 00.986 +21 47 50.93 V C57
Radar Observations (5)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2002-08-19 18:15:00 97818.94 0.3 Hz 2380 -1 -1
2019-08-10 16:40:00 72355.3839 0.2 Hz 2380 -1 -1
2019-08-10 16:54:00 70647616.76 4 us 2380 -1 -1
2019-08-11 17:34:00 68188003.7 0.5 us 2380 -1 -1
2019-08-14 16:49:00 63309552.41 0.7 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)