308242 (2005 GO21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3399039890 ± 1.98e-08
Semi-major axis (a)0.7532653249 AU ± 4.84e-10
Inclination (i)24.92743501° ± 2.29e-06
Long. of Asc. Node (Ω)272.66917398° ± 7.44e-07
Arg. of Perihelion (ω)156.64470316° ± 3.90e-06
Mean Anomaly (M)47.30509206° ± 6.89e-06
Mean Motion (n)1.5076145224°/day ± 1.45e-09
Perihelion dist (q)0.49722744 AU ± 1.49e-08
Aphelion dist (Q)1.00930321 AU ± 1.49e-08
Orbital Period0.65376545 yr ± 6.31e-10
Physical Parameters
H (abs. magnitude)16.18
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.165″
Uncertainty0
Orbit TypeAten
MOID0.045073 AU
Observations Used523
Radar Obs Used8
Gaia Obs Used46
Oppositions6
Arc Total2005-2025
First Observation Used2005-04-01
Last Observation Used2025-08-31
Observations (550)
Date Type RA Dec Mag Band Observatory
2005-05-19 19:41:28 C 00 27 20.81 +14 53 34.0 r E12
2005-05-19 19:45:46 C 00 27 21.64 +14 53 42.4 r E12
2006-05-02 08:39:52 C 05 45 49.82 -06 10 31.2 r E12
2006-05-02 08:40:38 C 05 45 49.93 -06 10 31.9 r E12
2006-05-02 08:41:23 C 05 45 50.07 -06 10 32.7 r E12
2006-05-02 08:42:10 C 05 45 50.25 -06 10 33.1 r E12
2006-05-02 08:43:44 C 05 45 50.62 -06 10 35.0 r E12
2006-05-02 09:09:48 C 05 45 56.01 -06 11 00.7 r E12
2006-05-03 09:00:50 C 05 50 56.40 -06 34 39.3 r E12
2006-05-03 09:01:36 C 05 50 56.58 -06 34 40.2 r E12
2006-05-03 09:02:21 C 05 50 56.72 -06 34 41.2 r E12
2006-05-03 09:03:08 C 05 50 56.90 -06 34 41.8 r E12
2006-06-07 08:47:06 C 08 51 17.22 -14 54 30.3 r E12
2006-06-07 08:56:59 C 08 51 19.30 -14 54 31.6 r E12
2006-06-07 09:06:52 C 08 51 21.47 -14 54 32.9 r E12
2006-06-07 09:16:48 C 08 51 23.58 -14 54 34.3 r E12
2006-06-15 08:58:43 C 09 32 35.44 -15 07 51.3 r E12
2006-06-15 09:10:59 C 09 32 38.00 -15 07 50.9 r E12
2006-06-15 09:23:12 C 09 32 40.59 -15 07 50.5 r E12
2006-06-15 09:35:30 C 09 32 43.18 -15 07 50.2 r E12
2006-06-18 09:26:45 C 09 47 52.08 -15 03 58.2 r E12
2006-06-18 09:39:20 C 09 47 54.67 -15 03 57.0 r E12
2006-06-18 09:51:51 C 09 47 57.26 -15 03 55.7 r E12
2006-06-18 10:04:22 C 09 47 59.85 -15 03 54.8 r E12
2006-06-27 08:13:12 C 10 31 45.766 -14 28 14.98 r E12
2006-06-27 08:16:36 C 10 31 46.440 -14 28 14.16 r E12
2006-07-03 09:36:42 C 11 00 00.72 -13 47 13.8 r E12
2006-07-03 09:45:55 C 11 00 02.44 -13 47 10.9 r E12
2006-07-03 09:55:07 C 11 00 04.14 -13 47 07.8 r E12
2006-07-03 10:04:20 C 11 00 05.86 -13 47 04.5 r E12
2006-07-21 09:39:58 C 12 15 41.54 -10 52 51.3 r E12
2006-07-21 09:54:44 C 12 15 43.88 -10 52 44.5 r E12
2006-07-21 10:02:08 C 12 15 45.07 -10 52 40.9 r E12
2006-08-22 09:30:48 C 14 00 40.14 -04 03 17.1 r E12
2006-08-22 09:36:58 C 14 00 40.89 -04 03 13.7 r E12
2006-08-22 09:43:11 C 14 00 41.58 -04 03 09.8 r E12
2006-08-22 09:49:21 C 14 00 42.30 -04 03 06.9 r E12
2008-05-08 09:18:39 C 06 18 41.005 -24 29 58.15 r E12
2008-05-08 09:21:20 C 06 18 41.573 -24 29 59.79 r E12
2008-05-08 09:47:18 C 06 18 47.062 -24 30 14.81 r E12
2008-05-09 08:32:34 C 06 23 41.575 -24 43 46.75 r E12
2008-05-10 09:32:11 C 06 29 07.373 -24 57 37.89 r E12
2008-05-31 08:13:51 C 08 27 07.11 -25 41 20.2 r 432
2008-05-31 08:34:37 C 08 27 12.20 -25 41 11.5 r 432
2008-05-31 08:50:33 C 08 27 16.07 -25 41 05.6 r 432
2008-06-30 08:27:17 C 11 11 15.15 -14 54 47.0 r 432
2008-07-01 08:19:52 C 11 15 52.66 -14 26 03.2 r 432
2008-07-01 08:51:56 C 11 15 58.71 -14 25 23.4 r E12
2008-07-01 09:06:27 C 11 16 01.41 -14 25 05.9 r E12
2008-07-01 09:18:17 C 11 16 03.68 -14 24 51.4 r E12
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-06-16 17:40:00 501233.664 2 Hz 8560 -14 -14
2012-06-16 18:00:00 498963.932 1 Hz 8560 -14 -14
2012-06-16 18:30:00 58163227.84 10 us 8560 -14 -14
2012-06-16 19:10:00 58024944.24 1 us 8560 -14 -14
2012-06-17 18:10:00 53527602.23 1 us 8560 -14 -14
2012-06-22 17:00:00 44438830.6 2.5 us 2380 -1 -1
2012-06-25 17:55:00 53578155.31 3 us 2380 -1 -1
2014-06-18 12:46:00 217960333.39 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)