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
2022-09-05 21:02:09 C 00 23 09.89 -31 54 51.6 Y 190
2022-09-05 21:03:12 C 00 23 10.18 -31 54 52.5 Y 190
2022-09-05 21:04:15 C 00 23 10.26 -31 54 53.8 Y 190
2022-09-05 21:05:40 C 00 23 10.60 -31 54 54.9 Y 190
2022-09-05 21:06:43 C 00 23 10.81 -31 54 55.9 Y 190
2022-09-05 21:07:46 C 00 23 11.02 -31 54 56.9 Y 190
2022-09-05 21:08:50 C 00 23 11.20 -31 54 58.0 Y 190
2022-09-05 21:09:53 C 00 23 11.40 -31 54 58.8 Y 190
2022-09-05 21:10:56 C 00 23 11.59 -31 54 59.9 Y 190
2022-09-05 21:11:59 C 00 23 11.79 -31 55 00.9 Y 190
2022-09-05 21:13:02 C 00 23 12.05 -31 55 01.6 Y 190
2022-09-05 21:14:06 C 00 23 12.19 -31 55 02.9 Y 190
2022-09-05 21:15:09 C 00 23 12.41 -31 55 04.2 Y 190
2022-09-05 21:16:26 C 00 23 12.59 -31 55 05.2 Y 190
2022-09-05 21:17:29 C 00 23 12.79 -31 55 06.3 Y 190
2022-09-05 21:18:32 C 00 23 13.01 -31 55 07.2 Y 190
2022-09-05 21:19:36 C 00 23 13.21 -31 55 08.4 Y 190
2022-09-05 21:20:39 C 00 23 13.40 -31 55 09.1 Y 190
2022-09-05 21:21:43 C 00 23 13.63 -31 55 10.1 Y 190
2022-09-05 21:22:46 C 00 23 13.81 -31 55 11.4 Y 190
2022-09-05 21:23:49 C 00 23 14.00 -31 55 12.1 Y 190
2022-09-05 21:24:53 C 00 23 14.21 -31 55 13.1 Y 190
2022-09-05 21:25:56 C 00 23 14.40 -31 55 14.4 Y 190
2022-09-05 21:27:28 C 00 23 14.68 -31 55 15.6 Y 190
2022-09-05 21:28:31 C 00 23 14.89 -31 55 16.7 Y 190
2022-09-05 21:29:35 C 00 23 15.08 -31 55 17.7 Y 190
2022-09-05 21:30:38 C 00 23 15.27 -31 55 18.5 Y 190
2022-09-05 21:31:42 C 00 23 15.46 -31 55 19.6 Y 190
2022-09-05 21:32:45 C 00 23 15.70 -31 55 20.9 Y 190
2022-09-05 21:33:48 C 00 23 15.86 -31 55 21.5 Y 190
2022-09-05 21:34:51 C 00 23 16.09 -31 55 22.9 Y 190
2022-09-05 21:35:55 C 00 23 16.26 -31 55 23.8 Y 190
2022-09-05 21:36:58 C 00 23 16.47 -31 55 24.7 Y 190
2022-09-06 04:12:57 C 00 24 41.520 -32 00 38.84 V W68
2022-09-06 04:23:00 C 00 24 43.430 -32 00 49.14 V W68
2022-09-06 04:27:35 C 00 24 44.304 -32 00 53.75 V W68
2022-09-06 04:34:54 C 00 24 45.701 -32 01 01.20 V W68
2022-09-06 21:42:26 C 00 28 21.28 -32 18 27.7 Y 190
2022-09-06 21:43:05 C 00 28 21.41 -32 18 28.2 Y 190
2022-09-06 21:44:39 C 00 28 21.73 -32 18 29.0 Y 190
2022-09-06 21:45:06 C 00 28 21.82 -32 18 29.9 Y 190
2022-09-06 21:45:19 C 00 28 21.86 -32 18 30.5 Y 190
2022-09-06 21:45:43 C 00 28 21.96 -32 18 29.9 Y 190
2022-09-06 21:46:06 C 00 28 22.01 -32 18 30.8 Y 190
2022-09-06 21:46:54 C 00 28 22.20 -32 18 30.8 Y 190
2022-09-06 21:47:17 C 00 28 22.27 -32 18 31.8 Y 190
2022-09-06 21:47:40 C 00 28 22.33 -32 18 31.6 Y 190
2022-09-06 21:48:04 C 00 28 22.42 -32 18 32.4 Y 190
2022-09-06 21:48:50 C 00 28 22.55 -32 18 33.1 Y 190
2022-09-06 21:49:14 C 00 28 22.61 -32 18 33.5 Y 190
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)