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
2022-01-12 10:09:04 C 07 29 17.61 +16 34 59.4 V G96
2022-01-12 10:15:19 C 07 29 17.17 +16 35 01.5 V G96
2022-01-12 10:21:34 C 07 29 16.70 +16 35 03.4 V G96
2022-01-12 10:27:51 C 07 29 16.22 +16 35 04.7 V G96
2022-02-05 06:41:02 C 06 57 04.233 +19 08 25.00 U F52
2022-02-05 06:58:25 C 06 57 03.602 +19 08 28.55 U F52
2022-02-05 07:15:48 C 06 57 02.945 +19 08 32.41 U F52
2022-02-05 07:37:32 C 06 57 02.148 +19 08 37.04 U F52
2023-03-30 13:13:24 C 15 14 11.977 -10 04 02.82 U F51
2023-03-30 13:28:48 C 15 14 11.763 -10 03 58.67 U F51
2023-03-30 13:44:12 C 15 14 11.552 -10 03 54.33 U F51
2023-03-30 13:59:36 C 15 14 11.341 -10 03 50.05 U F51
2023-04-16 18:24:52 C 15 03 00.69 -07 40 56.0 V D29
2023-04-16 19:05:36 C 15 02 58.81 -07 40 39.8 V D29
2023-04-17 11:44:41 C 15 02 15.304 -07 33 40.10 U F52
2023-04-17 12:16:27 C 15 02 13.811 -07 33 26.77 U F52
2023-04-17 12:32:27 C 15 02 13.064 -07 33 20.12 U F52
2023-04-19 08:50:38 C 15 00 10.588 -07 14 29.04 V G96
2023-04-19 08:57:28 C 15 00 10.256 -07 14 26.05 V G96
2023-04-19 09:04:17 C 15 00 09.911 -07 14 23.28 V G96
2023-04-19 09:11:07 C 15 00 09.572 -07 14 20.15 V G96
2023-04-25 16:29:30 C 14 52 08.12 -06 06 29.2 V D29
2023-04-25 16:49:52 C 14 52 06.89 -06 06 19.7 V D29
2023-04-25 17:10:14 C 14 52 05.66 -06 06 10.6 V D29
2023-04-29 16:56:33 C 14 46 16.34 -05 21 28.9 V D29
2023-04-29 17:18:41 C 14 46 14.88 -05 21 17.5 V D29
2023-04-29 17:40:48 C 14 46 13.42 -05 21 06.7 V D29
2023-05-11 06:40:07 C 14 27 17.665 -03 13 09.12 V G96
2023-05-11 06:46:55 C 14 27 17.154 -03 13 06.06 V G96
2023-05-11 06:53:43 C 14 27 16.657 -03 13 02.89 V G96
2023-05-11 07:00:31 C 14 27 16.146 -03 12 59.98 V G96
2023-05-12 16:22:58 C 14 24 53.07 -02 58 31.1 V D29
2023-05-12 16:43:20 C 14 24 51.55 -02 58 22.2 V D29
2023-05-12 17:03:42 C 14 24 50.06 -02 58 13.7 V D29
2023-05-22 06:20:53 C 14 08 52.368 -01 30 36.97 V G96
2023-05-22 06:28:59 C 14 08 51.810 -01 30 34.16 V G96
2023-05-22 06:37:03 C 14 08 51.248 -01 30 31.57 V G96
2023-05-22 06:45:09 C 14 08 50.680 -01 30 28.98 V G96
2023-05-25 07:36:01 C 14 04 09.292 -01 08 14.55 X F51
2023-05-25 07:55:16 C 14 04 08.023 -01 08 09.07 X F51
2023-05-25 08:12:16 C 14 04 06.905 -01 08 04.33 X F51
2023-05-25 08:29:27 C 14 04 05.772 -01 07 59.43 X F51
2023-05-27 05:44:12 C 14 01 19.301 -00 55 51.96 V 703
2023-05-27 05:51:53 C 14 01 18.937 -00 55 50.20 V 703
2023-05-27 05:59:33 C 14 01 18.354 -00 55 48.68 V 703
2023-05-27 06:07:13 C 14 01 17.929 -00 55 46.42 V 703
2023-05-27 12:53:22 C 14 00 54.05 -00 54 04.5 V D29
2023-05-27 13:13:44 C 14 00 52.77 -00 53 59.3 V D29
2023-05-27 13:34:06 C 14 00 51.49 -00 53 54.1 V D29
2023-11-09 19:17:57 C 20 58 42.775 -28 02 49.34 V M22
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)