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
2005-04-04 07:19:37 C 11 59 27.35 +01 17 20.7 r G96
2005-04-04 07:28:46 C 11 59 26.38 +01 17 17.9 r G96
2005-04-04 07:38:00 C 11 59 25.44 +01 17 14.4 r G96
2005-04-04 07:47:09 C 11 59 24.50 +01 17 10.9 r G96
2005-04-04 08:40:55 C 11 59 18.83 +01 16 53.7 r G96
2005-04-04 08:49:56 C 11 59 17.88 +01 16 50.4 r G96
2005-04-04 08:59:02 C 11 59 16.87 +01 16 47.6 r G96
2005-04-04 09:08:07 C 11 59 15.94 +01 16 44.9 r G96
2005-04-05 07:07:53 C 11 57 02.80 +01 09 28.5 r G96
2005-04-05 07:16:26 C 11 57 01.96 +01 09 25.7 r G96
2005-04-05 07:25:01 C 11 57 01.03 +01 09 23.1 r G96
2005-04-05 07:33:32 C 11 57 00.18 +01 09 20.4 r G96
2005-04-05 10:32:08 C 11 56 43.01 +01 08 35.7 r 413
2005-04-05 10:48:07 C 11 56 41.38 +01 08 30.3 r 413
2005-04-07 11:06:31 C 11 51 55.84 +00 52 03.3 F65
2005-04-07 11:08:02 C 11 51 55.68 +00 52 02.5 F65
2005-04-07 11:09:38 C 11 51 55.57 +00 52 03.0 F65
2005-04-07 11:11:09 C 11 51 55.38 +00 52 01.3 F65
2005-04-07 11:12:38 C 11 51 55.25 +00 52 01.1 F65
2005-04-10 11:59:20 C 11 45 10.21 +00 27 05.8 c 474
2005-04-10 12:01:49 C 11 45 09.98 +00 27 06.0 c 474
2005-04-10 12:05:40 C 11 45 09.68 +00 27 04.0 c 474
2005-04-10 12:11:00 C 11 45 09.20 +00 27 01.8 c 474
2005-04-12 04:04:01 C 11 41 40.78 +00 12 40.3 o 715
2005-04-12 04:19:05 C 11 41 39.41 +00 12 34.3 o 715
2005-04-12 04:34:07 C 11 41 38.12 +00 12 29.0 o 715
2005-05-01 04:45:16 C 11 14 50.22 -02 40 29.7 o 715
2005-05-01 05:20:47 C 11 14 48.89 -02 40 44.4 o 715
2005-05-13 04:16:36 C 11 09 40.60 -04 38 20.2 d 291
2005-05-13 04:27:02 C 11 09 40.40 -04 38 24.8 d 291
2005-05-13 04:38:09 C 11 09 40.39 -04 38 29.2 d 291
2005-05-14 03:33:00 C 11 09 36.81 -04 48 12.5 d 291
2005-05-14 03:43:33 C 11 09 36.77 -04 48 16.1 d 291
2008-01-18 10:42:56 C 13 29 23.09 +07 46 05.8 o 291
2008-01-31 09:24:44 C 13 37 57.83 +06 01 38.5 o 291
2008-01-31 09:33:11 C 13 37 58.04 +06 01 36.2 o 291
2008-01-31 09:44:44 C 13 37 58.10 +06 01 34.1 o 291
2008-03-01 12:07:06 C 13 24 35.29 +02 52 20.5 o 291
2008-03-01 12:12:27 C 13 24 35.00 +02 52 19.3 o 291
2008-03-01 12:17:55 C 13 24 34.63 +02 52 17.9 o 291
2008-03-06 11:09:40 C 13 16 38.85 +02 24 10.5 r G96
2008-03-06 11:18:29 C 13 16 38.17 +02 24 09.2 r G96
2008-03-06 11:27:23 C 13 16 37.48 +02 24 05.7 r G96
2008-03-06 11:36:18 C 13 16 36.80 +02 24 04.2 r G96
2008-03-26 08:48:07 C 12 30 42.37 +00 20 41.2 r G96
2008-03-26 08:56:11 C 12 30 41.43 +00 20 38.9 r G96
2008-03-26 09:04:11 C 12 30 40.53 +00 20 36.6 r G96
2008-03-26 09:12:11 C 12 30 39.63 +00 20 34.6 r G96
2008-03-30 04:30:02 C 12 20 39.84 -00 05 55.7 o 291
2008-03-30 04:35:43 C 12 20 39.21 -00 05 57.4 o 291