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
2003-12-11 19:09:48 C 01 14 06.50 -05 58 50.6 r 170
2003-12-12 17:37:48 C 01 17 32.47 -05 25 19.7 d 104
2003-12-12 17:42:39 C 01 17 33.21 -05 25 12.8 d 104
2003-12-12 17:45:29 C 01 17 33.58 -05 25 08.2 d 104
2003-12-13 03:11:26 C 01 18 58.19 -05 11 15.5 18.9 c 704
2003-12-13 03:30:10 C 01 19 00.85 -05 10 47.6 18.9 c 704
2003-12-13 03:48:54 C 01 19 03.56 -05 10 20.2 18.5 c 704
2003-12-13 04:06:31 C 01 19 06.37 -05 09 54.4 18.7 c 644
2003-12-13 04:07:42 C 01 19 06.30 -05 09 53.1 18.4 c 704
2003-12-13 04:26:26 C 01 19 09.05 -05 09 26.0 18.3 c 704
2003-12-13 04:36:27 C 01 19 10.69 -05 09 10.7 18.6 c 644
2003-12-13 05:08:28 C 01 19 15.34 -05 08 23.8 18.6 c 644
2005-05-04 07:36:45 C 12 06 29.51 +06 00 30.7 o F65
2005-05-04 07:46:22 C 12 06 29.17 +06 00 32.5 o F65
2005-05-04 07:55:35 C 12 06 28.84 +06 00 34.1 o F65
2007-03-10 05:17:11 C 11 26 04.76 +07 11 12.8 o 691
2007-03-10 05:42:31 C 11 26 03.40 +07 11 23.8 o 691
2007-03-10 06:07:50 C 11 26 01.94 +07 11 34.0 o 691
2007-03-14 02:38:43 C 11 21 02.58 +07 49 10.2 o 691
2007-03-14 03:04:06 C 11 21 01.25 +07 49 20.3 o 691
2007-03-14 03:29:28 C 11 20 59.89 +07 49 31.4 o 691
2009-01-31 09:41:16 C 10 33 30.24 +09 21 26.6 o 691
2009-01-31 10:07:38 C 10 33 28.96 +09 21 36.3 o 691
2009-01-31 10:33:38 C 10 33 27.69 +09 21 45.0 o 691
2009-02-28 07:24:40 C 09 57 20.55 +13 31 32.6 r G96
2009-02-28 07:34:28 C 09 57 20.01 +13 31 36.0 r G96
2009-02-28 07:44:21 C 09 57 19.47 +13 31 39.6 r G96
2009-02-28 07:54:08 C 09 57 18.97 +13 31 43.5 r G96
2011-01-12 07:07:58 C 09 02 56.83 +13 43 29.4 r G96
2011-01-12 07:15:28 C 09 02 56.40 +13 43 31.8 r G96
2011-01-12 07:23:00 C 09 02 55.96 +13 43 34.1 r G96
2011-01-12 07:27:20 C 09 02 55.61 +13 43 36.8 o 691
2011-01-12 07:30:32 C 09 02 55.46 +13 43 36.7 r G96
2011-01-12 08:18:26 C 09 02 52.50 +13 43 53.4 o 691
2011-01-27 06:34:49 C 08 39 48.60 +15 48 31.5 r G96
2011-01-27 06:44:53 C 08 39 47.91 +15 48 35.0 r G96
2011-01-27 06:54:57 C 08 39 47.19 +15 48 38.9 r G96
2011-01-27 07:05:00 C 08 39 46.58 +15 48 41.8 r G96
2011-02-10 04:36:22 C 08 19 18.33 +17 36 14.3 r G96
2011-02-10 04:47:15 C 08 19 17.72 +17 36 17.5 r G96
2011-02-10 04:58:10 C 08 19 17.11 +17 36 20.8 r G96
2011-02-10 05:09:05 C 08 19 16.50 +17 36 24.0 r G96
2011-05-30 07:02:00 C 08 57 52.01 +17 51 52.4 t 568
2011-05-30 07:09:30 C 08 57 52.39 +17 51 50.9 t 568
2011-05-30 07:16:58 C 08 57 52.80 +17 51 49.3 t 568
2011-05-31 07:14:57 C 08 59 11.78 +17 47 01.2 t 568
2011-05-31 07:22:28 C 08 59 12.19 +17 46 59.7 t 568
2012-04-15 14:51:46 C 17 26 33.004 -14 13 52.41 L F51
2012-04-15 14:59:38 C 17 26 33.426 -14 13 50.66 L F51
2012-05-11 13:17:17 C 17 54 03.788 -10 44 00.17 L F51
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)