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
2003-04-05 09:02:29 C 15 28 47.35 -10 26 58.2 d 291
2003-04-05 09:31:33 C 15 28 46.92 -10 26 49.8 d 291
2003-05-02 07:58:03 C 15 04 09.60 -06 10 35.1 c 691
2003-05-02 08:38:12 C 15 04 06.98 -06 10 16.5 c 691
2003-05-02 09:19:15 C 15 04 04.31 -06 09 56.7 c 691
2003-05-05 06:35:27 C 14 59 37.77 -05 37 06.5 o 699
2003-05-05 06:44:58 C 14 59 37.01 -05 37 02.0 c 704
2003-05-05 07:02:21 C 14 59 35.78 -05 36 52.0 c 704
2003-05-05 07:02:23 C 14 59 35.92 -05 36 53.8 o 699
2003-05-05 07:19:30 C 14 59 34.65 -05 36 44.5 c 704
2003-05-05 07:29:07 C 14 59 34.00 -05 36 40.2 o 699
2003-05-05 07:56:06 C 14 59 32.16 -05 36 27.8 o 699
2003-05-09 06:46:19 C 14 53 03.49 -04 51 32.8 19.4 c 704
2003-05-09 07:03:49 C 14 53 02.13 -04 51 24.5 19.6 c 704
2003-05-09 07:20:53 C 14 53 01.00 -04 51 17.2 19.7 c 704
2003-05-09 07:38:01 C 14 52 59.71 -04 51 08.5 19.9 c 704
2003-05-27 03:57:11 C 14 22 03.25 -01 55 40.9 c 691
2003-05-27 04:37:25 C 14 22 00.35 -01 55 28.2 c 691
2003-05-27 05:18:36 C 14 21 57.40 -01 55 15.7 c 691
2003-05-29 05:52:33 C 14 18 41.31 -01 40 46.6 c 691
2003-05-29 06:31:37 C 14 18 38.62 -01 40 35.6 c 691
2003-05-29 07:09:24 C 14 18 36.00 -01 40 24.8 c 691
2003-05-30 05:19:58 C 14 17 09.52 -01 34 19.0 18.9 c 704
2003-05-30 05:35:33 C 14 17 08.39 -01 34 13.4 19.6 c 704
2003-05-30 05:50:53 C 14 17 07.32 -01 34 09.7 19.4 c 704
2003-05-30 06:06:22 C 14 17 06.29 -01 34 06.0 19.7 c 704
2003-06-01 04:41:20 C 14 14 09.31 -01 22 17.6 c 711
2003-06-01 06:08:21 C 14 14 03.78 -01 21 57.4 c 711
2003-06-01 06:22:14 C 14 14 02.92 -01 21 54.3 c 711
2003-06-03 03:01:16 C 14 11 22.19 -01 12 02.6 c 711
2003-06-03 05:38:51 C 14 11 12.38 -01 11 30.5 c 711
2003-06-03 08:23:28 C 14 11 02.42 -01 10 57.4 c 711
2003-11-18 01:49:41 C 23 09 00.91 -23 35 39.6 18.1 c 704
2003-11-18 02:08:00 C 23 09 06.42 -23 35 02.5 18.2 c 704
2003-11-18 03:03:35 C 23 09 23.07 -23 33 11.4 18.1 c 704
2003-11-26 02:56:55 C 00 01 43.85 -17 03 36.9 18.5 c 704
2003-11-26 02:57:06 C 00 01 43.87 -17 03 36.1 18.2 c 704
2003-11-26 03:14:44 C 00 01 48.08 -17 03 01.6 19.4 c 704
2003-11-26 03:14:55 C 00 01 48.09 -17 03 00.9 18.7 c 704
2003-11-26 03:32:38 C 00 01 52.22 -17 02 25.5 18.4 c 704
2003-11-26 03:32:49 C 00 01 52.22 -17 02 25.5 18.4 c 704
2003-11-26 03:50:31 C 00 01 56.39 -17 01 50.0 18.4 c 704
2003-11-26 03:50:42 C 00 01 56.42 -17 01 49.5 18.3 c 704
2003-11-26 04:08:36 C 00 02 00.57 -17 01 12.7 18.3 c 704
2003-12-10 05:11:53 C 01 08 07.41 -06 57 00.7 o 699
2003-12-10 05:31:03 C 01 08 10.44 -06 56 30.6 o 699
2003-12-10 05:50:07 C 01 08 13.41 -06 56 01.6 o 699
2003-12-10 06:09:16 C 01 08 16.41 -06 55 31.3 o 699
2003-12-11 19:06:02 C 01 14 05.97 -05 58 55.8 r 170
2003-12-11 19:08:23 C 01 14 06.29 -05 58 52.7 r 170
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)