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
1983-05-07 14:59:10 15 44 52.45 -07 36 38.4 d 260
1983-05-07 15:59:10 15 44 49.13 -07 36 11.5 d 260
2001-12-16 12:11:58 C 08 30 46.47 +13 09 21.2 o 644
2002-01-08 08:29:22 C 07 55 36.36 +15 43 20.6 o 644
2002-01-08 09:04:43 C 07 55 33.75 +15 43 31.7 o 644
2002-01-08 09:43:28 C 07 55 30.76 +15 43 45.1 o 644
2002-01-13 07:15:12 C 07 46 52.90 +16 21 53.9 20.0 c 704
2002-01-13 07:37:17 C 07 46 51.36 +16 22 02.6 20.7 c 704
2002-01-13 07:59:07 C 07 46 49.68 +16 22 09.8 20.5 c 704
2002-01-13 08:20:56 C 07 46 48.03 +16 22 15.9 19.7 c 704
2002-01-13 08:42:47 C 07 46 46.42 +16 22 21.6 20.3 c 704
2002-01-14 07:15:23 C 07 45 08.49 +16 29 37.1 19.8 c 704
2002-01-14 07:37:07 C 07 45 06.83 +16 29 45.1 20.0 c 704
2002-01-14 07:58:52 C 07 45 05.19 +16 29 51.2 19.9 c 704
2002-01-14 08:21:06 C 07 45 03.59 +16 29 57.8 19.6 c 704
2002-01-15 05:37:38 C 07 43 32.13 +16 36 47.2 19.8 c 704
2002-01-15 05:59:48 C 07 43 30.45 +16 36 53.1 19.6 c 704
2002-01-15 06:21:40 C 07 43 28.81 +16 37 00.9 19.8 c 704
2002-01-15 06:27:46 C 07 43 28.26 +16 37 02.0 c 649
2002-01-15 06:43:31 C 07 43 27.19 +16 37 07.9 19.9 c 704
2002-01-15 06:48:40 C 07 43 26.68 +16 37 08.6 c 649
2002-01-15 06:55:05 C 07 43 26.25 +16 37 10.7 c 649
2002-01-15 07:36:59 C 07 43 23.22 +16 37 25.2 711
2002-01-15 07:49:23 C 07 43 22.27 +16 37 29.0 711
2002-01-15 08:01:49 C 07 43 21.42 +16 37 33.0 711
2002-01-15 20:26:51 C 07 42 28.60 +16 41 27.3 c 046
2002-01-15 20:28:59 C 07 42 28.48 +16 41 27.8 c 046
2002-01-15 20:31:05 C 07 42 28.27 +16 41 29.4 c 046
2002-01-15 20:35:38 C 07 42 27.97 +16 41 29.9 c 046
2002-01-17 00:41:55 C 07 40 28.08 +16 50 22.5 c 046
2002-01-17 00:53:46 C 07 40 27.24 +16 50 25.7 c 046
2002-01-19 05:40:19 C 07 36 48.15 +17 06 52.3 d 691
2002-01-19 05:46:10 C 07 36 47.76 +17 06 54.3 d 691
2002-01-19 05:51:44 C 07 36 47.37 +17 06 56.2 d 691
2002-01-19 07:08:53 C 07 36 41.87 +17 07 18.8 c 715
2002-01-19 07:18:00 C 07 36 41.24 +17 07 21.7 c 715
2002-01-19 07:28:06 C 07 36 40.55 +17 07 25.5 c 715
2002-01-20 08:25:22 C 07 34 59.22 +17 15 02.3 d 691
2002-01-20 08:31:10 C 07 34 58.82 +17 15 04.1 d 691
2002-01-20 08:36:50 C 07 34 58.43 +17 15 05.8 d 691
2002-02-09 13:15:05 C 07 09 59.30 +19 19 02.0 c 413
2002-02-09 13:19:46 C 07 09 59.15 +19 19 03.1 c 413
2002-02-09 13:24:25 C 07 09 58.96 +19 19 04.5 c 413
2002-02-13 06:24:20 C 07 07 18.55 +19 36 14.0 c 696
2002-02-13 06:30:05 C 07 07 18.39 +19 36 15.2 c 696
2002-02-14 06:58:13 C 07 06 40.85 +19 40 42.9 c 696
2002-02-14 07:03:52 C 07 06 40.71 +19 40 44.1 c 696
2003-03-27 09:09:00 C 15 29 50.44 -11 21 56.0 c 696
2003-03-27 09:21:22 C 15 29 50.46 -11 21 53.2 c 696
2003-04-05 08:24:18 C 15 28 47.92 -10 27 09.2 d 291
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)