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
2012-12-12 03:15:18 C 05 53 13.68 +11 24 22.9 c A24
2012-12-12 03:16:19 C 05 53 13.57 +11 24 23.9 c A24
2012-12-13 07:21:44 C 05 50 50.20 +11 33 38.2 r G96
2012-12-13 07:31:55 C 05 50 49.30 +11 33 41.6 r G96
2012-12-13 07:42:10 C 05 50 48.40 +11 33 44.8 r G96
2012-12-13 07:52:37 C 05 50 47.47 +11 33 48.4 r G96
2012-12-13 08:02:59 C 05 50 46.53 +11 33 51.6 r G96
2012-12-23 05:56:01 C 05 32 36.78 +12 54 00.8 q H21
2012-12-23 06:02:22 C 05 32 36.34 +12 54 03.0 q H21
2012-12-23 06:08:26 C 05 32 35.92 +12 54 04.8 q H21
2012-12-23 06:14:08 C 05 32 35.53 +12 54 06.7 q H21
2013-01-07 06:02:03 C 05 15 06.804 +14 54 08.32 L F51
2013-01-07 06:28:58 C 05 15 05.906 +14 54 17.10 L F51
2013-01-07 06:30:04 C 05 15 05.870 +14 54 17.53 L F51
2013-01-07 06:53:02 C 05 15 05.097 +14 54 25.03 L F51
2013-01-07 07:16:06 C 05 15 04.316 +14 54 32.57 L F51
2013-01-18 06:16:24 C 05 10 20.64 +16 15 45.1 r G96
2013-01-18 06:24:52 C 05 10 20.56 +16 15 47.4 r G96
2013-01-18 06:33:15 C 05 10 20.49 +16 15 50.0 r G96
2013-01-18 06:41:41 C 05 10 20.42 +16 15 52.3 r G96
2013-01-20 06:51:04 C 05 10 08.93 +16 29 58.7 t 290
2013-01-20 06:54:03 C 05 10 08.92 +16 29 59.5 t 290
2013-01-20 06:57:03 C 05 10 08.90 +16 30 00.4 t 290
2014-03-25 05:48:59 C 13 55 26.15 -04 43 11.5 o 691
2014-03-25 06:14:28 C 13 55 25.08 -04 43 01.6 o 691
2014-03-25 06:39:59 C 13 55 24.09 -04 42 51.8 o 691
2014-04-01 06:03:58 C 13 47 59.75 -03 34 38.5 o 691
2014-04-01 06:29:26 C 13 47 58.51 -03 34 27.1 o 691
2014-04-01 06:54:53 C 13 47 57.20 -03 34 16.6 o 691
2014-04-04 05:23:42 C 13 44 22.52 -03 03 32.1 o 691
2014-04-04 05:49:09 C 13 44 21.15 -03 03 20.9 o 691
2014-04-04 06:14:36 C 13 44 19.77 -03 03 09.4 o 691
2014-06-18 07:03:28 C 12 40 23.724 +02 42 46.23 L F51
2014-06-18 07:20:52 C 12 40 23.996 +02 42 42.61 L F51
2014-06-18 07:38:13 C 12 40 24.244 +02 42 38.83 L F51
2014-06-18 07:55:38 C 12 40 24.506 +02 42 35.10 L F51
2017-12-29 14:49:31 C 11 25 28.899 +04 04 03.46 U F51
2017-12-29 15:06:47 C 11 25 29.060 +04 04 03.54 U F51
2017-12-29 15:24:02 C 11 25 29.195 +04 04 03.26 U F51
2018-01-18 09:48:04 C 11 24 12.19 +04 44 20.0 u H21
2018-01-18 10:04:20 C 11 24 11.91 +04 44 22.8 u H21
2018-01-18 10:21:55 C 11 24 11.59 +04 44 26.1 u H21
2018-02-12 09:53:40 C 11 05 02.533 +07 33 00.64 U F51
2018-02-12 10:10:31 C 11 05 01.704 +07 33 06.94 U F51
2018-02-12 10:27:24 C 11 05 00.915 +07 33 13.19 U F51
2018-03-07 07:17:46 C 10 36 07.193 +11 07 19.32 U F51
2018-03-07 07:32:39 C 10 36 06.383 +11 07 24.74 U F51
2018-03-07 07:47:31 C 10 36 05.560 +11 07 30.31 U F51
2020-01-21 10:27:22 C 09 50 47.894 +11 42 23.55 U F52
2020-01-21 10:42:36 C 09 50 47.080 +11 42 28.73 U F52
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)