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 19:39:57 C 00 22 54.57 -31 53 31.2 Y 190
2022-09-05 19:40:29 C 00 22 54.72 -31 53 32.2 Y 190
2022-09-05 19:41:03 C 00 22 54.82 -31 53 32.4 Y 190
2022-09-05 19:41:37 C 00 22 54.89 -31 53 32.8 Y 190
2022-09-05 19:42:10 C 00 22 55.00 -31 53 33.0 Y 190
2022-09-05 19:42:43 C 00 22 55.12 -31 53 33.8 Y 190
2022-09-05 19:43:16 C 00 22 55.18 -31 53 34.0 Y 190
2022-09-05 19:43:50 C 00 22 55.29 -31 53 35.3 Y 190
2022-09-05 19:44:23 C 00 22 55.42 -31 53 35.8 Y 190
2022-09-05 19:44:56 C 00 22 55.53 -31 53 36.4 Y 190
2022-09-05 19:48:32 C 00 22 56.21 -31 53 40.1 Y 190
2022-09-05 19:49:05 C 00 22 56.28 -31 53 40.8 Y 190
2022-09-05 19:49:38 C 00 22 56.33 -31 53 40.6 Y 190
2022-09-05 19:51:17 C 00 22 56.69 -31 53 41.9 Y 190
2022-09-05 19:51:51 C 00 22 56.75 -31 53 42.8 Y 190
2022-09-05 19:52:35 C 00 22 56.95 -31 53 43.3 Y 190
2022-09-05 19:53:09 C 00 22 57.02 -31 53 44.4 Y 190
2022-09-05 19:53:42 C 00 22 57.08 -31 53 45.5 Y 190
2022-09-05 19:54:15 C 00 22 57.22 -31 53 44.9 Y 190
2022-09-05 19:54:48 C 00 22 57.40 -31 53 45.6 Y 190
2022-09-05 19:55:21 C 00 22 57.45 -31 53 47.4 Y 190
2022-09-05 19:55:55 C 00 22 57.55 -31 53 46.8 Y 190
2022-09-05 19:56:28 C 00 22 57.64 -31 53 48.3 Y 190
2022-09-05 19:57:01 C 00 22 57.79 -31 53 47.6 Y 190
2022-09-05 19:57:35 C 00 22 57.84 -31 53 48.3 Y 190
2022-09-05 20:43:12 C 00 23 06.41 -31 54 33.2 Y 190
2022-09-05 20:43:46 C 00 23 06.52 -31 54 33.5 Y 190
2022-09-05 20:44:19 C 00 23 06.59 -31 54 34.3 Y 190
2022-09-05 20:44:52 C 00 23 06.71 -31 54 35.0 Y 190
2022-09-05 20:45:25 C 00 23 06.81 -31 54 35.6 Y 190
2022-09-05 20:45:59 C 00 23 06.94 -31 54 36.0 Y 190
2022-09-05 20:46:32 C 00 23 07.04 -31 54 36.7 Y 190
2022-09-05 20:47:04 C 00 23 07.13 -31 54 37.0 Y 190
2022-09-05 20:47:38 C 00 23 07.24 -31 54 37.4 Y 190
2022-09-05 20:48:31 C 00 23 07.42 -31 54 38.7 Y 190
2022-09-05 20:49:04 C 00 23 07.52 -31 54 39.0 Y 190
2022-09-05 20:49:37 C 00 23 07.61 -31 54 39.6 Y 190
2022-09-05 20:50:11 C 00 23 07.72 -31 54 40.3 Y 190
2022-09-05 20:50:44 C 00 23 07.84 -31 54 40.7 Y 190
2022-09-05 20:51:18 C 00 23 07.93 -31 54 41.1 Y 190
2022-09-05 20:51:50 C 00 23 08.03 -31 54 41.7 Y 190
2022-09-05 20:52:23 C 00 23 08.12 -31 54 42.4 Y 190
2022-09-05 20:52:57 C 00 23 08.23 -31 54 42.8 Y 190
2022-09-05 20:53:30 C 00 23 08.35 -31 54 43.2 Y 190
2022-09-05 20:55:49 C 00 23 08.80 -31 54 45.0 Y 190
2022-09-05 20:56:53 C 00 23 08.99 -31 54 46.5 Y 190
2022-09-05 20:57:56 C 00 23 09.19 -31 54 47.5 Y 190
2022-09-05 20:59:00 C 00 23 09.34 -31 54 48.9 Y 190
2022-09-05 21:00:03 C 00 23 09.60 -31 54 50.2 Y 190
2022-09-05 21:01:06 C 00 23 09.79 -31 54 50.6 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)