390929 (2005 GP21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2245432452 ± 4.41e-07
Semi-major axis (a)1.3083120149 AU ± 3.73e-09
Inclination (i)18.80146381° ± 2.25e-05
Long. of Asc. Node (Ω)9.98183761° ± 2.82e-06
Arg. of Perihelion (ω)1.43369353° ± 1.49e-04
Mean Anomaly (M)99.12320924° ± 2.28e-04
Mean Motion (n)0.6586357219°/day ± 2.82e-09
Perihelion dist (q)1.01453939 AU ± 5.77e-07
Aphelion dist (Q)1.60208464 AU ± 5.77e-07
Orbital Period1.49646648 yr ± 6.41e-09
Physical Parameters
H (abs. magnitude)20.44
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.123″
Uncertainty0
Orbit TypeApollo
MOID0.012306 AU
Observations Used239
Oppositions6
Arc Total2005-2023
First Observation Used2005-04-04
Last Observation Used2023-04-25
Observations (283)
Date Type RA Dec Mag Band Observatory
2008-03-30 04:41:19 C 12 20 38.54 -00 05 59.2 o 291
2008-04-11 06:34:43 C 11 51 02.80 -01 35 53.4 r G96
2008-04-11 06:43:34 C 11 51 01.98 -01 35 56.4 r G96
2008-04-11 06:52:29 C 11 51 01.15 -01 35 59.6 r G96
2008-04-11 07:01:22 C 11 51 00.28 -01 36 02.3 r G96
2011-03-13 08:17:57 C 13 12 30.02 -00 06 03.3 o 691
2011-03-13 08:43:26 C 13 12 27.72 -00 06 10.1 o 691
2011-03-28 04:09:38 C 12 36 49.73 -01 46 25.9 o 691
2011-03-28 04:35:10 C 12 36 46.79 -01 46 33.6 o 691
2011-03-28 05:00:42 C 12 36 44.17 -01 46 40.6 o 691
2011-03-28 23:06:10 C 12 34 44.47 -01 51 57.9 r 113
2011-03-28 23:22:18 C 12 34 42.55 -01 52 01.4 r 113
2011-03-28 23:38:30 C 12 34 40.84 -01 52 06.5 r 113
2011-04-01 08:08:54 C 12 25 50.773 -02 15 22.81 L F51
2011-04-01 09:35:24 C 12 25 40.991 -02 15 48.45 L F51
2011-04-01 09:55:54 C 12 25 38.644 -02 15 54.18 L F51
2011-04-03 00:19:09 C 12 21 27.16 -02 27 12.3 v 204
2011-04-03 00:53:16 C 12 21 23.38 -02 27 22.0 v 204
2011-04-04 04:12:10 C 12 18 27.00 -02 35 19.5 o 691
2011-04-04 04:33:58 C 12 18 24.68 -02 35 26.4 o 691
2011-04-04 04:55:45 C 12 18 22.28 -02 35 32.6 o 691
2014-02-28 12:12:16 C 13 39 25.526 -00 24 50.40 L F51
2014-02-28 12:44:34 C 13 39 23.973 -00 25 00.54 L F51
2014-02-28 13:00:49 C 13 39 23.197 -00 25 05.54 L F51
2014-03-30 01:19:33 C 12 40 07.78 -04 01 00.7 L W84
2014-03-30 01:27:25 C 12 40 06.89 -04 01 03.1 L W84
2014-03-30 01:29:23 C 12 40 06.68 -04 01 03.7 L W84
2014-03-30 01:31:21 C 12 40 06.45 -04 01 04.2 L W84
2014-03-30 01:33:20 C 12 40 06.23 -04 01 04.8 L W84
2014-03-30 01:35:17 C 12 40 06.00 -04 01 05.4 L W84
2014-03-30 01:41:11 C 12 40 05.34 -04 01 07.1 L W84
2014-03-30 01:43:09 C 12 40 05.12 -04 01 07.7 L W84
2014-03-30 01:45:07 C 12 40 04.90 -04 01 08.4 L W84
2014-03-30 01:47:05 C 12 40 04.69 -04 01 08.9 L W84
2014-03-30 01:49:05 C 12 40 04.45 -04 01 09.5 L W84
2014-03-30 01:52:59 C 12 40 04.01 -04 01 10.7 L W84
2014-03-30 01:56:57 C 12 40 03.57 -04 01 11.8 L W84
2014-03-30 01:58:55 C 12 40 03.36 -04 01 12.6 L W84
2014-03-30 02:00:53 C 12 40 03.13 -04 01 13.0 L W84
2014-03-30 02:02:52 C 12 40 02.91 -04 01 13.6 L W84
2014-03-30 02:08:48 C 12 40 02.24 -04 01 15.4 L W84
2014-03-30 02:13:25 C 12 40 01.72 -04 01 16.8 L W84
2014-03-30 02:15:23 C 12 40 01.49 -04 01 17.3 L W84
2014-03-30 02:17:21 C 12 40 01.27 -04 01 17.8 L W84
2014-03-30 02:19:21 C 12 40 01.04 -04 01 18.5 L W84
2014-03-30 02:21:20 C 12 40 00.83 -04 01 19.1 L W84
2014-03-30 02:23:19 C 12 40 00.60 -04 01 19.7 L W84
2014-03-30 02:27:16 C 12 40 00.15 -04 01 20.9 L W84
2014-03-30 02:29:16 C 12 39 59.93 -04 01 21.5 L W84
2014-03-30 02:31:14 C 12 39 59.71 -04 01 22.1 L W84