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
2016-04-20 09:54:31 C 21 57 51.67 -33 14 27.0 q W88
2016-04-24 01:42:04 C 22 07 00.04 -31 07 34.9 o K95
2016-04-24 02:04:50 C 22 07 02.48 -31 07 02.3 o K95
2016-06-15 10:31:38 C 01 04 20.92 +23 24 38.4 q 703
2016-06-15 10:35:57 C 01 04 21.89 +23 24 53.0 q 703
2016-06-15 10:40:17 C 01 04 22.80 +23 25 07.4 q 703
2016-06-15 10:44:36 C 01 04 23.80 +23 25 21.6 q 703
2016-07-04 02:11:34 C 03 08 29.49 +42 20 17.8 q 160
2016-07-04 02:14:31 C 03 08 30.49 +42 20 22.5 q 160
2016-07-04 02:17:31 C 03 08 31.45 +42 20 27.1 q 160
2016-07-10 10:10:34 C 03 58 40.39 +45 06 16.5 R G45
2016-07-10 10:17:36 C 03 58 42.76 +45 06 21.6 R G45
2016-07-10 10:31:16 C 03 58 47.26 +45 06 31.7 R G45
2016-07-10 10:38:07 C 03 58 49.54 +45 06 36.4 R G45
2016-07-10 10:45:02 C 03 58 51.83 +45 06 41.7 R G45
2016-07-12 01:31:14 C 04 11 46.21 +45 29 13.7 q 160
2016-07-12 01:34:01 C 04 11 47.10 +45 29 16.1 q 160
2016-07-12 01:37:01 C 04 11 48.09 +45 29 17.1 q 160
2018-06-28 04:23:06 C 02 57 26.30 +36 31 04.3 V G40
2018-06-28 04:42:58 C 02 57 32.17 +36 31 29.8 V G40
2019-06-13 16:42:22 C 08 32 56.31 -03 11 13.0 o K95
2019-06-13 17:18:56 C 08 33 03.77 -03 11 42.6 o K95
2019-06-14 16:41:26 C 08 37 48.47 -03 30 43.0 o K95
2019-06-14 17:19:20 C 08 37 56.19 -03 31 12.7 o K95
2020-04-12 15:03:51 C 21 45 27.65 -19 38 20.8 V T08
2020-04-12 15:07:17 C 21 45 27.93 -19 38 13.9 V T08
2020-04-12 15:08:45 C 21 45 28.25 -19 38 13.1 V T08
2020-04-12 15:11:25 C 21 45 28.62 -19 38 09.3 V T08
2020-05-03 14:23:21 C 22 54 48.92 -04 52 59.7 V T08
2020-05-03 14:29:30 C 22 54 49.82 -04 52 46.8 V T08
2020-05-03 14:40:13 C 22 54 51.37 -04 52 25.5 V T08
2020-05-03 14:57:05 C 22 54 53.84 -04 51 51.9 V T08
2020-05-20 14:10:07 C 00 00 55.65 +09 45 40.2 V T08
2020-05-20 14:12:06 C 00 00 56.02 +09 45 44.2 V T08
2020-05-20 14:18:06 C 00 00 57.11 +09 45 58.0 V T08
2020-05-20 14:22:46 C 00 00 57.94 +09 46 08.3 V T08
2020-05-20 14:42:46 C 00 01 01.55 +09 46 54.0 V T08
2020-05-20 14:44:05 C 00 01 01.79 +09 46 56.4 V T08
2020-05-27 10:47:20 C 00 32 16.98 +15 54 12.6 V 703
2020-05-27 10:55:48 C 00 32 18.61 +15 54 30.9 V 703
2020-05-27 11:04:15 C 00 32 20.40 +15 54 49.9 V 703
2020-05-27 11:12:43 C 00 32 22.02 +15 55 08.8 V 703
2020-06-01 11:03:10 C 00 57 28.04 +20 14 37.1 U I41
2020-06-01 11:09:38 C 00 57 29.44 +20 14 50.7 U I41
2020-06-01 11:16:42 C 00 57 30.98 +20 15 05.8 U I41
2020-06-01 11:23:47 C 00 57 32.52 +20 15 20.8 U I41
2020-06-23 11:01:21 C 03 14 31.08 +34 04 49.1 U I41
2020-06-23 11:08:23 C 03 14 33.17 +34 04 55.0 U I41
2020-06-23 11:15:24 C 03 14 35.28 +34 05 00.9 U I41
2020-06-23 11:22:28 C 03 14 37.35 +34 05 06.9 U I41
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)