153958 (2002 AM31)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4514220293 ± 3.71e-09
Semi-major axis (a)1.7032680436 AU ± 1.46e-09
Inclination (i)4.64444760° ± 1.03e-06
Long. of Asc. Node (Ω)144.36077985° ± 6.31e-06
Arg. of Perihelion (ω)197.94555713° ± 5.14e-06
Mean Anomaly (M)344.28180112° ± 2.97e-06
Mean Motion (n)0.4433919241°/day ± 5.70e-10
Perihelion dist (q)0.93437533 AU ± 6.37e-09
Aphelion dist (Q)2.47216076 AU ± 6.67e-09
Orbital Period2.22292340 yr ± 2.86e-09
Physical Parameters
H (abs. magnitude)18.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.332″
Uncertainty0
Orbit TypeApollo
MOID0.032204 AU
Observations Used781
Radar Obs Used8
Oppositions16
Arc Total1983-2025
First Observation Used1983-05-07
Last Observation Used2025-04-26
Observations (828)
Date Type RA Dec Mag Band Observatory
2012-07-21 22:23:53 C 20 50 36.36 +68 11 46.5 t J84
2012-07-21 22:26:53 C 20 50 44.18 +68 12 34.6 t J84
2012-07-21 22:29:52 C 20 50 52.10 +68 13 23.1 t J84
2012-07-21 22:32:52 C 20 51 00.02 +68 14 11.6 t J84
2012-07-21 22:35:52 C 20 51 07.91 +68 14 59.7 t J84
2012-07-22 03:00:06 C 21 03 19.21 +69 23 44.7 c J52
2012-07-22 03:05:39 C 21 03 35.43 +69 25 06.3 c J52
2012-07-22 03:11:12 C 21 03 51.69 +69 26 28.0 c J52
2012-07-24 01:13:00 C 00 46 33.45 +74 51 18.8 c A24
2012-07-24 01:13:22 C 00 46 34.90 +74 51 17.7 c A24
2012-07-24 02:12:43 C 00 51 50.69 +74 47 33.4 c A24
2012-07-28 02:46:14 C 04 35 23.91 +54 48 01.3 u 160
2012-07-28 02:48:31 C 04 35 25.48 +54 47 34.2 u 160
2012-07-28 02:49:38 C 04 35 26.26 +54 47 21.0 u 160
2012-07-28 02:50:47 C 04 35 27.05 +54 47 07.5 u 160
2012-07-28 02:53:01 C 04 35 28.59 +54 46 40.7 u 160
2012-07-29 01:50:45 C 04 49 20.79 +50 19 58.2 u 160
2012-07-29 01:53:38 C 04 49 22.25 +50 19 28.1 u 160
2012-07-29 01:56:22 C 04 49 23.63 +50 18 59.5 u 160
2012-07-30 01:29:40 C 04 59 41.98 +46 19 41.6 u 160
2012-07-30 01:32:25 C 04 59 43.01 +46 19 16.5 u 160
2012-07-30 01:36:06 C 04 59 44.38 +46 18 43.2 u 160
2012-07-31 03:02:52 C 05 08 05.11 +42 36 04.1 u 160
2012-07-31 03:06:15 C 05 08 06.04 +42 35 37.8 u 160
2012-07-31 03:09:38 C 05 08 06.95 +42 35 11.5 u 160
2012-08-01 01:36:21 C 05 13 54.70 +39 44 19.2 u 160
2012-08-01 01:36:55 C 05 13 54.75 +39 44 15.3 u 160
2012-08-01 01:41:54 C 05 13 56.05 +39 43 41.1 u 160
2012-08-01 01:42:29 C 05 13 56.18 +39 43 37.1 u 160
2012-08-02 02:22:23 C 05 19 07.26 +37 00 51.4 u 160
2012-08-02 02:25:32 C 05 19 07.81 +37 00 32.7 u 160
2012-08-02 02:27:42 C 05 19 08.24 +37 00 20.1 u 160
2012-08-03 02:11:24 C 05 23 17.73 +34 43 48.3 u 160
2012-08-03 02:12:35 C 05 23 17.92 +34 43 42.5 u 160
2012-08-03 02:14:22 C 05 23 18.22 +34 43 33.4 u 160
2012-08-04 01:39:25 C 05 26 49.27 +32 45 12.3 u 160
2012-08-04 01:43:19 C 05 26 49.86 +32 44 54.5 u 160
2012-08-04 01:47:39 C 05 26 50.44 +32 44 34.8 u 160
2012-08-20 03:00:04 C 05 58 09.65 +18 08 37.1 u 160
2012-08-20 03:02:56 C 05 58 09.82 +18 08 34.1 u 160
2012-08-20 03:05:59 C 05 58 10.00 +18 08 30.8 u 160
2012-10-22 14:23:11 c 07 05 21.747 +09 03 38.95 L F51
2012-10-22 14:43:32 c 07 05 21.598 +09 03 37.07 L F51
2012-11-07 04:44:05 C 06 57 25.49 +08 42 38.8 c A24
2012-11-07 04:46:10 C 06 57 25.44 +08 42 39.0 c A24
2012-11-08 05:12:44 C 06 56 21.14 +08 43 10.0 c A24
2012-11-08 05:13:46 C 06 56 21.19 +08 43 09.6 c A24
2012-11-10 09:08:14 C 06 53 52.12 +08 45 14.5 18.7 c 704
2012-11-10 09:29:10 C 06 53 50.91 +08 45 15.5 18.6 c 704
2012-11-10 09:50:07 C 06 53 49.73 +08 45 16.3 19.0 c 704
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-07-12 02:47:00 69235472.11 4 us 2380 -1 -1
2012-07-15 03:08:00 55498824.2 0.5 us 2380 -1 -1
2012-07-15 03:20:00 438181.029 1 Hz 8560 -14 -14
2012-07-17 08:10:00 46712279.22 3 us 8560 -14 -14
2012-07-17 09:20:00 46539849.55 2 us 8560 -14 -14
2012-07-23 07:20:00 35089313.22 1 us 8560 -14 -14
2012-07-27 12:10:00 42926600.19 2 us 8560 -14 -14
2012-08-07 13:11:00 92998198.65 0.5 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)