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
2022-07-06 11:00:12 C 22 11 11.187 -18 22 05.34 X G37
2022-07-06 11:01:56 C 22 11 11.293 -18 22 05.52 X G37
2022-07-06 11:03:39 C 22 11 11.390 -18 22 05.67 X G37
2022-07-06 11:05:23 C 22 11 11.488 -18 22 05.83 X G37
2022-07-06 11:07:11 C 22 11 11.597 -18 22 06.00 X G37
2022-07-06 11:08:55 C 22 11 11.693 -18 22 06.17 X G37
2022-07-06 11:10:38 C 22 11 11.794 -18 22 06.31 X G37
2022-07-06 11:12:22 C 22 11 11.896 -18 22 06.47 X G37
2022-07-06 11:14:05 C 22 11 11.994 -18 22 06.61 X G37
2022-07-06 11:15:58 C 22 11 12.106 -18 22 06.79 X G37
2022-07-06 11:17:41 C 22 11 12.207 -18 22 06.96 X G37
2022-07-06 11:19:25 C 22 11 12.305 -18 22 07.12 X G37
2022-07-06 11:21:08 C 22 11 12.406 -18 22 07.29 X G37
2022-07-06 11:22:52 C 22 11 12.509 -18 22 07.43 X G37
2022-07-07 07:52:26 C 22 12 29.935 -18 24 06.95 X G37
2022-07-07 07:54:09 C 22 12 30.036 -18 24 07.19 X G37
2022-07-07 07:55:53 C 22 12 30.140 -18 24 07.39 X G37
2022-07-07 07:57:37 C 22 12 30.237 -18 24 07.53 X G37
2022-07-07 07:59:20 C 22 12 30.340 -18 24 07.71 X G37
2022-07-07 08:01:04 C 22 12 30.448 -18 24 08.00 X G37
2022-07-07 08:02:47 C 22 12 30.541 -18 24 08.14 X G37
2022-07-07 08:04:31 C 22 12 30.643 -18 24 08.39 X G37
2022-07-07 08:06:14 C 22 12 30.750 -18 24 08.59 X G37
2022-07-07 08:08:11 C 22 12 30.862 -18 24 08.77 X G37
2022-07-07 08:09:54 C 22 12 30.967 -18 24 08.98 X G37
2022-07-07 08:11:38 C 22 12 31.065 -18 24 09.19 X G37
2022-07-07 08:13:22 C 22 12 31.166 -18 24 09.38 X G37
2022-07-07 08:15:05 C 22 12 31.269 -18 24 09.59 X G37
2022-07-07 08:16:49 C 22 12 31.373 -18 24 09.79 X G37
2022-07-07 08:18:32 C 22 12 31.473 -18 24 09.98 X G37
2022-07-07 08:20:16 C 22 12 31.571 -18 24 10.18 X G37
2022-07-07 08:21:59 C 22 12 31.676 -18 24 10.38 X G37
2022-07-07 08:23:43 C 22 12 31.774 -18 24 10.59 X G37
2022-07-07 08:25:26 C 22 12 31.878 -18 24 10.74 X G37
2022-07-07 08:27:10 C 22 12 31.983 -18 24 10.94 X G37
2022-07-07 08:28:53 C 22 12 32.078 -18 24 11.13 X G37
2022-07-07 08:30:37 C 22 12 32.185 -18 24 11.35 X G37
2022-07-07 08:32:20 C 22 12 32.278 -18 24 11.55 X G37
2022-07-07 08:34:04 C 22 12 32.387 -18 24 11.76 X G37
2022-07-07 08:35:47 C 22 12 32.484 -18 24 11.95 X G37
2022-07-07 08:37:31 C 22 12 32.587 -18 24 12.13 X G37
2022-07-07 08:39:14 C 22 12 32.686 -18 24 12.32 X G37
2022-07-07 08:40:58 C 22 12 32.786 -18 24 12.49 X G37
2022-07-07 08:43:22 C 22 12 32.928 -18 24 12.77 X G37
2022-07-07 08:45:05 C 22 12 33.026 -18 24 12.97 X G37
2022-07-07 08:46:49 C 22 12 33.131 -18 24 13.17 X G37
2022-07-07 08:48:32 C 22 12 33.229 -18 24 13.35 X G37
2022-07-07 08:50:16 C 22 12 33.330 -18 24 13.55 X G37
2022-07-07 08:51:59 C 22 12 33.431 -18 24 13.74 X G37
2022-07-07 08:53:43 C 22 12 33.531 -18 24 13.93 X G37
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)