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
2020-11-22 15:14:36 C 10 32 44.076 +11 50 57.26 U F52
2020-11-25 14:11:07 C 10 38 20.498 +11 31 38.35 U F52
2020-11-25 14:27:44 C 10 38 21.726 +11 31 34.09 U F52
2020-11-25 14:44:19 C 10 38 22.976 +11 31 29.79 U F52
2020-12-17 08:07:20 C 11 09 27.772 +10 05 45.18 X G37
2020-12-17 08:10:23 C 11 09 27.906 +10 05 45.04 X G37
2020-12-17 08:13:17 C 11 09 28.014 +10 05 44.95 X G37
2020-12-17 08:16:16 C 11 09 28.138 +10 05 44.82 X G37
2020-12-17 08:19:09 C 11 09 28.250 +10 05 44.71 X G37
2020-12-17 08:22:03 C 11 09 28.365 +10 05 44.57 X G37
2020-12-17 08:25:57 C 11 09 28.516 +10 05 44.41 X G37
2020-12-17 08:28:50 C 11 09 28.629 +10 05 44.31 X G37
2020-12-17 08:31:44 C 11 09 28.753 +10 05 44.15 X G37
2020-12-17 08:34:37 C 11 09 28.870 +10 05 44.01 X G37
2020-12-17 08:37:31 C 11 09 28.972 +10 05 43.91 X G37
2020-12-17 08:40:25 C 11 09 29.095 +10 05 43.79 X G37
2020-12-17 08:43:18 C 11 09 29.214 +10 05 43.66 X G37
2020-12-17 08:46:12 C 11 09 29.318 +10 05 43.54 X G37
2020-12-17 08:49:05 C 11 09 29.433 +10 05 43.40 X G37
2020-12-17 08:51:59 C 11 09 29.551 +10 05 43.30 X G37
2020-12-17 08:55:30 C 11 09 29.687 +10 05 43.15 X G37
2020-12-17 08:58:24 C 11 09 29.802 +10 05 43.05 X G37
2020-12-17 09:01:17 C 11 09 29.912 +10 05 42.91 X G37
2020-12-17 09:04:11 C 11 09 30.027 +10 05 42.79 X G37
2020-12-17 09:07:04 C 11 09 30.138 +10 05 42.68 X G37
2020-12-17 09:09:58 C 11 09 30.257 +10 05 42.53 X G37
2020-12-17 09:12:51 C 11 09 30.368 +10 05 42.42 X G37
2020-12-17 09:15:45 C 11 09 30.482 +10 05 42.29 X G37
2020-12-17 09:18:38 C 11 09 30.594 +10 05 42.19 X G37
2020-12-17 09:21:32 C 11 09 30.707 +10 05 42.04 X G37
2020-12-17 09:24:25 C 11 09 30.819 +10 05 41.90 X G37
2020-12-17 09:27:19 C 11 09 30.935 +10 05 41.79 X G37
2020-12-17 09:30:12 C 11 09 31.048 +10 05 41.67 X G37
2020-12-17 09:33:06 C 11 09 31.159 +10 05 41.54 X G37
2020-12-17 09:35:59 C 11 09 31.274 +10 05 41.42 X G37
2020-12-17 09:38:53 C 11 09 31.387 +10 05 41.29 X G37
2020-12-17 09:41:46 C 11 09 31.495 +10 05 41.16 X G37
2020-12-17 09:44:40 C 11 09 31.609 +10 05 41.04 X G37
2020-12-17 09:47:34 C 11 09 31.724 +10 05 40.91 X G37
2020-12-17 09:50:27 C 11 09 31.833 +10 05 40.80 X G37
2020-12-17 09:53:21 C 11 09 31.945 +10 05 40.67 X G37
2020-12-17 09:56:14 C 11 09 32.056 +10 05 40.54 X G37
2020-12-17 09:59:08 C 11 09 32.169 +10 05 40.42 X G37
2020-12-17 10:02:01 C 11 09 32.281 +10 05 40.29 X G37
2020-12-17 10:04:55 C 11 09 32.391 +10 05 40.17 X G37
2020-12-17 10:07:48 C 11 09 32.503 +10 05 40.02 X G37
2020-12-17 10:10:42 C 11 09 32.616 +10 05 39.90 X G37
2020-12-17 10:13:35 C 11 09 32.727 +10 05 39.79 X G37
2020-12-17 10:16:29 C 11 09 32.840 +10 05 39.67 X G37
2020-12-17 10:19:22 C 11 09 32.955 +10 05 39.55 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)