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
2019-04-06 02:14:21 C 11 11 28.975 +11 38 08.99 X 309
2019-04-06 02:15:38 C 11 11 28.922 +11 38 09.14 X 309
2019-04-06 02:16:55 C 11 11 28.870 +11 38 09.28 X 309
2019-04-06 02:18:12 C 11 11 28.819 +11 38 09.43 X 309
2019-04-06 02:19:35 C 11 11 28.763 +11 38 09.59 X 309
2019-04-06 02:20:52 C 11 11 28.710 +11 38 09.73 X 309
2019-04-06 02:22:09 C 11 11 28.660 +11 38 09.87 X 309
2019-04-06 02:23:26 C 11 11 28.608 +11 38 10.03 X 309
2019-04-06 02:24:43 C 11 11 28.557 +11 38 10.15 X 309
2019-04-06 02:26:00 C 11 11 28.504 +11 38 10.30 X 309
2019-04-06 02:27:17 C 11 11 28.451 +11 38 10.47 X 309
2019-04-06 02:28:40 C 11 11 28.395 +11 38 10.63 X 309
2019-04-06 02:29:57 C 11 11 28.345 +11 38 10.76 X 309
2019-04-06 02:31:14 C 11 11 28.294 +11 38 10.89 X 309
2019-04-06 02:32:31 C 11 11 28.239 +11 38 11.05 X 309
2019-04-06 02:33:48 C 11 11 28.188 +11 38 11.16 X 309
2019-04-06 02:35:05 C 11 11 28.138 +11 38 11.29 X 309
2019-04-06 02:36:22 C 11 11 28.085 +11 38 11.46 X 309
2019-04-06 02:42:53 C 11 11 27.822 +11 38 12.21 X 309
2019-04-06 02:44:10 C 11 11 27.770 +11 38 12.32 X 309
2019-04-06 02:45:27 C 11 11 27.718 +11 38 12.49 X 309
2019-04-06 02:46:50 C 11 11 27.665 +11 38 12.64 X 309
2019-04-06 02:48:07 C 11 11 27.609 +11 38 12.79 X 309
2019-04-06 02:49:24 C 11 11 27.560 +11 38 12.93 X 309
2019-04-06 02:50:41 C 11 11 27.508 +11 38 13.08 X 309
2019-04-06 02:51:58 C 11 11 27.457 +11 38 13.22 X 309
2019-04-06 02:53:15 C 11 11 27.405 +11 38 13.35 X 309
2019-04-06 02:54:32 C 11 11 27.354 +11 38 13.52 X 309
2019-04-06 02:55:58 C 11 11 27.296 +11 38 13.67 X 309
2019-04-06 02:57:14 C 11 11 27.243 +11 38 13.82 X 309
2019-04-06 02:58:31 C 11 11 27.191 +11 38 13.95 X 309
2019-04-06 02:59:48 C 11 11 27.140 +11 38 14.09 X 309
2019-04-06 03:01:05 C 11 11 27.088 +11 38 14.24 X 309
2019-04-06 03:02:22 C 11 11 27.037 +11 38 14.38 X 309
2019-04-06 03:03:39 C 11 11 26.986 +11 38 14.52 X 309
2019-04-06 03:05:04 C 11 11 26.928 +11 38 14.66 X 309
2019-04-06 03:06:21 C 11 11 26.874 +11 38 14.84 X 309
2019-04-06 03:07:38 C 11 11 26.823 +11 38 14.97 X 309
2019-04-06 03:08:55 C 11 11 26.771 +11 38 15.10 X 309
2019-04-06 03:10:12 C 11 11 26.721 +11 38 15.24 X 309
2019-04-06 03:11:29 C 11 11 26.671 +11 38 15.41 X 309
2019-04-06 03:12:46 C 11 11 26.616 +11 38 15.54 X 309
2019-04-06 03:14:10 C 11 11 26.561 +11 38 15.69 X 309
2019-04-06 03:15:26 C 11 11 26.510 +11 38 15.84 X 309
2019-04-06 03:16:44 C 11 11 26.457 +11 38 15.97 X 309
2019-04-06 04:28:37 C 11 11 23.566 +11 38 23.87 X 309
2019-04-06 04:29:54 C 11 11 23.513 +11 38 23.99 X 309
2019-04-06 04:31:11 C 11 11 23.463 +11 38 24.15 X 309
2019-04-06 04:32:28 C 11 11 23.412 +11 38 24.29 X 309
2019-04-06 04:33:44 C 11 11 23.361 +11 38 24.43 X 309
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)