65803 Didymos (1996 GT)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3832284188 ± 6.51e-10
Semi-major axis (a)1.6425644037 AU ± 4.60e-11
Inclination (i)3.41407431° ± 1.19e-07
Long. of Asc. Node (Ω)72.98445790° ± 2.27e-06
Arg. of Perihelion (ω)319.58991656° ± 2.29e-06
Mean Anomaly (M)167.22107700° ± 1.96e-07
Mean Motion (n)0.4681970422°/day ± 1.97e-11
Perihelion dist (q)1.01308704 AU ± 1.07e-09
Aphelion dist (Q)2.27204176 AU ± 1.07e-09
Orbital Period2.10515273 yr ± 8.85e-11
Physical Parameters
H (abs. magnitude)18.11
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.192″
Uncertainty0
Orbit TypeApollo
MOID0.038973 AU
Observations Used5293
Radar Obs Used9
Oppositions14
Arc Total1996-2025
First Observation Used1996-04-11
Last Observation Used2025-02-27
Observations (6092)
Date Type RA Dec Mag Band Observatory
2023-01-10 22:58:24 C 07 28 16.58 +30 31 03.0 V B18
2023-01-10 22:59:28 C 07 28 16.51 +30 31 03.2 V B18
2023-01-10 23:00:04 C 07 28 16.47 +30 31 03.3 V B18
2023-01-10 23:00:38 C 07 28 16.43 +30 31 03.4 V B18
2023-01-10 23:01:14 C 07 28 16.40 +30 31 03.5 V B18
2023-01-10 23:01:50 C 07 28 16.36 +30 31 03.6 V B18
2023-01-10 23:02:24 C 07 28 16.32 +30 31 03.7 V B18
2023-01-10 23:03:01 C 07 28 16.28 +30 31 03.8 V B18
2023-01-10 23:03:35 C 07 28 16.24 +30 31 03.8 V B18
2023-01-11 01:18:46 C 07 28 08.25 +30 31 23.8 V M34
2023-01-11 01:35:47 C 07 28 07.18 +30 31 26.4 V M34
2023-01-11 02:34:05 C 07 28 03.54 +30 31 34.5 V M34
2023-01-11 03:15:32 C 07 28 03.68 +30 31 38.0 V U55
2023-01-11 03:44:15 C 07 28 01.95 +30 31 44.1 V U55
2023-01-11 04:12:44 C 07 28 00.22 +30 31 50.0 V U55
2023-01-11 09:28:54 C 07 27 40.31 +30 32 46.5 V U55
2023-01-11 09:52:29 C 07 27 38.80 +30 32 50.3 V U55
2023-01-11 10:15:46 C 07 27 37.34 +30 32 53.3 V U55
2023-01-11 18:48:06 C 07 27 09.82 +30 34 16.1 V C40
2023-01-11 18:54:21 C 07 27 09.42 +30 34 17.2 V C40
2023-01-11 19:00:29 C 07 27 09.02 +30 34 18.5 V C40
2023-01-11 19:55:19 C 07 27 05.61 +30 34 28.1 V C40
2023-01-11 20:01:33 C 07 27 05.21 +30 34 29.2 V C40
2023-01-11 20:07:41 C 07 27 04.83 +30 34 30.2 V C40
2023-01-11 21:45:57 C 07 26 58.54 +30 34 46.6 V B18
2023-01-11 21:47:07 C 07 26 58.47 +30 34 46.7 V B18
2023-01-11 21:48:17 C 07 26 58.39 +30 34 46.9 V B18
2023-01-11 21:49:28 C 07 26 58.31 +30 34 47.1 V B18
2023-01-11 21:50:38 C 07 26 58.24 +30 34 47.3 V B18
2023-01-11 21:52:57 C 07 26 58.09 +30 34 47.6 V B18
2023-01-11 21:54:08 C 07 26 58.02 +30 34 47.8 V B18
2023-01-11 21:55:18 C 07 26 57.94 +30 34 48.0 V B18
2023-01-11 21:56:30 C 07 26 57.87 +30 34 48.1 V B18
2023-01-11 21:57:41 C 07 26 57.80 +30 34 48.3 V B18
2023-01-11 21:58:59 C 07 26 57.71 +30 34 48.5 V B18
2023-01-11 22:45:14 C 07 26 55.51 +30 34 57.2 U L78
2023-01-11 23:14:28 C 07 26 53.67 +30 35 01.8 U L78
2023-01-11 23:32:23 C 07 26 52.51 +30 35 04.6 U L78
2023-01-11 23:44:29 C 07 26 51.72 +30 35 05.8 U L78
2023-01-12 09:15:38 C 07 26 19.316 +30 36 33.08 V G96
2023-01-12 09:23:05 C 07 26 18.848 +30 36 33.91 V G96
2023-01-12 09:30:31 C 07 26 18.380 +30 36 34.81 V G96
2023-01-12 09:37:58 C 07 26 17.927 +30 36 35.60 V G96
2023-01-12 22:39:27 C 07 25 35.42 +30 38 20.1 V B18
2023-01-12 22:40:03 C 07 25 35.38 +30 38 20.2 V B18
2023-01-12 22:40:39 C 07 25 35.34 +30 38 20.3 V B18
2023-01-12 22:41:33 C 07 25 35.29 +30 38 20.4 V B18
2023-01-12 22:42:09 C 07 25 35.25 +30 38 20.4 V B18
2023-01-12 22:42:44 C 07 25 35.22 +30 38 20.5 V B18
2023-01-12 22:43:20 C 07 25 35.18 +30 38 20.6 V B18
Radar Observations (9)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-11-14 09:00:00 48158516.71 0.2 us 8560 -14 -14
2003-11-15 05:30:00 48558999.72 0.2 us 8560 -14 -14
2003-11-23 03:26:00 60567637.54 0.1 us 2380 -1 -1
2003-11-24 03:17:00 62957533.66 0.1 us 2380 -1 -1
2003-11-26 04:19:00 68342975.29 0.1 us 2380 -1 -1
2022-09-28 11:00:00 73916934.998 1.5 us 8560 -14 -14
2022-09-30 11:20:00 72316200.402 1.5 us 8560 -14 -14
2022-10-07 11:20:00 71795431.959 1 us 8560 -14 -14
2022-10-08 12:50:00 72372078.703 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)