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
2022-07-05 07:31:14 C 22 09 28.506 -18 19 24.00 X I33
2022-07-05 07:32:56 C 22 09 28.605 -18 19 24.15 X I33
2022-07-05 07:34:38 C 22 09 28.703 -18 19 24.29 X I33
2022-07-05 07:36:20 C 22 09 28.799 -18 19 24.43 X I33
2022-07-05 07:38:02 C 22 09 28.900 -18 19 24.58 X I33
2022-07-05 07:39:44 C 22 09 28.999 -18 19 24.72 X I33
2022-07-05 07:41:26 C 22 09 29.097 -18 19 24.86 X I33
2022-07-05 07:43:08 C 22 09 29.199 -18 19 25.00 X I33
2022-07-05 07:44:50 C 22 09 29.293 -18 19 25.15 X I33
2022-07-05 07:46:32 C 22 09 29.393 -18 19 25.29 X I33
2022-07-05 07:48:14 C 22 09 29.494 -18 19 25.42 X I33
2022-07-05 07:49:57 C 22 09 29.595 -18 19 25.57 X I33
2022-07-05 07:51:39 C 22 09 29.692 -18 19 25.71 X I33
2022-07-05 07:53:21 C 22 09 29.792 -18 19 25.86 X I33
2022-07-05 07:55:05 C 22 09 29.888 -18 19 25.99 X I33
2022-07-05 07:56:47 C 22 09 29.994 -18 19 26.14 X I33
2022-07-05 07:58:29 C 22 09 30.089 -18 19 26.27 X I33
2022-07-05 08:05:18 C 22 09 30.485 -18 19 26.84 X I33
2022-07-05 08:07:00 C 22 09 30.582 -18 19 26.97 X I33
2022-07-05 08:08:42 C 22 09 30.681 -18 19 27.10 X I33
2022-07-05 08:10:24 C 22 09 30.783 -18 19 27.24 X I33
2022-07-05 08:12:06 C 22 09 30.878 -18 19 27.39 X I33
2022-07-05 08:13:48 C 22 09 30.978 -18 19 27.52 X I33
2022-07-05 08:15:30 C 22 09 31.082 -18 19 27.66 X I33
2022-07-05 08:27:27 C 22 09 31.772 -18 19 28.63 X I33
2022-07-05 08:29:09 C 22 09 31.871 -18 19 28.77 X I33
2022-07-05 08:30:51 C 22 09 31.972 -18 19 28.91 X I33
2022-07-05 08:32:33 C 22 09 32.068 -18 19 29.03 X I33
2022-07-05 08:34:15 C 22 09 32.169 -18 19 29.18 X I33
2022-07-05 08:35:57 C 22 09 32.268 -18 19 29.31 X I33
2022-07-05 08:37:39 C 22 09 32.367 -18 19 29.44 X I33
2022-07-05 08:39:21 C 22 09 32.465 -18 19 29.56 X I33
2022-07-05 08:41:03 C 22 09 32.564 -18 19 29.71 X I33
2022-07-05 08:42:49 C 22 09 32.665 -18 19 29.84 X I33
2022-07-05 08:44:31 C 22 09 32.764 -18 19 29.97 X I33
2022-07-05 08:46:14 C 22 09 32.866 -18 19 30.14 X I33
2022-07-05 08:47:56 C 22 09 32.966 -18 19 30.25 X I33
2022-07-05 08:49:38 C 22 09 33.064 -18 19 30.39 X I33
2022-07-05 08:51:20 C 22 09 33.157 -18 19 30.49 X I33
2022-07-05 08:53:02 C 22 09 33.259 -18 19 30.65 X I33
2022-07-05 08:54:44 C 22 09 33.357 -18 19 30.77 X I33
2022-07-05 08:56:26 C 22 09 33.459 -18 19 30.92 X I33
2022-07-05 08:58:08 C 22 09 33.559 -18 19 31.04 X I33
2022-07-05 08:59:50 C 22 09 33.657 -18 19 31.20 X I33
2022-07-05 09:01:32 C 22 09 33.757 -18 19 31.33 X I33
2022-07-05 09:03:14 C 22 09 33.851 -18 19 31.44 X I33
2022-07-05 09:04:57 C 22 09 33.962 -18 19 31.59 X I33
2022-07-05 09:06:43 C 22 09 34.059 -18 19 31.72 X I33
2022-07-05 09:08:26 C 22 09 34.158 -18 19 31.85 X I33
2022-07-05 09:10:08 C 22 09 34.253 -18 19 31.98 X I33
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)