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
2020-12-17 10:22:34 C 11 09 33.072 +10 05 39.41 X G37
2020-12-17 10:25:28 C 11 09 33.182 +10 05 39.30 X G37
2020-12-17 10:28:21 C 11 09 33.297 +10 05 39.15 X G37
2020-12-17 10:31:15 C 11 09 33.408 +10 05 39.01 X G37
2020-12-17 10:34:08 C 11 09 33.521 +10 05 38.90 X G37
2020-12-17 10:37:02 C 11 09 33.629 +10 05 38.75 X G37
2020-12-17 10:39:55 C 11 09 33.747 +10 05 38.62 X G37
2020-12-17 10:42:49 C 11 09 33.846 +10 05 38.51 X G37
2020-12-17 10:45:42 C 11 09 33.965 +10 05 38.37 X G37
2020-12-17 11:05:57 C 11 09 34.741 +10 05 37.45 X G37
2020-12-17 11:08:51 C 11 09 34.849 +10 05 37.36 X G37
2020-12-17 11:11:44 C 11 09 34.959 +10 05 37.24 X G37
2020-12-17 11:14:38 C 11 09 35.066 +10 05 37.11 X G37
2020-12-17 11:17:32 C 11 09 35.177 +10 05 36.98 X G37
2020-12-17 11:20:25 C 11 09 35.293 +10 05 36.85 X G37
2020-12-17 11:23:19 C 11 09 35.404 +10 05 36.72 X G37
2020-12-17 11:26:12 C 11 09 35.513 +10 05 36.57 X G37
2020-12-17 11:29:06 C 11 09 35.614 +10 05 36.48 X G37
2020-12-17 11:31:59 C 11 09 35.732 +10 05 36.32 X G37
2020-12-17 11:34:53 C 11 09 35.838 +10 05 36.19 X G37
2020-12-17 11:37:46 C 11 09 35.952 +10 05 36.07 X G37
2020-12-17 11:40:40 C 11 09 36.060 +10 05 35.95 X G37
2020-12-17 11:43:33 C 11 09 36.165 +10 05 35.81 X G37
2020-12-17 11:46:27 C 11 09 36.279 +10 05 35.68 X G37
2020-12-17 11:49:25 C 11 09 36.386 +10 05 35.54 X G37
2020-12-17 11:52:18 C 11 09 36.501 +10 05 35.41 X G37
2020-12-17 11:55:12 C 11 09 36.608 +10 05 35.29 X G37
2020-12-17 11:58:05 C 11 09 36.714 +10 05 35.16 X G37
2020-12-17 12:00:59 C 11 09 36.832 +10 05 35.02 X G37
2020-12-17 12:03:52 C 11 09 36.936 +10 05 34.88 X G37
2020-12-17 12:06:46 C 11 09 37.045 +10 05 34.75 X G37
2020-12-17 12:09:39 C 11 09 37.157 +10 05 34.58 X G37
2020-12-17 12:12:33 C 11 09 37.267 +10 05 34.49 X G37
2020-12-17 12:15:26 C 11 09 37.375 +10 05 34.39 X G37
2020-12-17 12:18:20 C 11 09 37.489 +10 05 34.23 X G37
2020-12-17 12:21:13 C 11 09 37.597 +10 05 34.09 X G37
2020-12-17 12:24:07 C 11 09 37.707 +10 05 33.95 X G37
2020-12-17 12:27:00 C 11 09 37.816 +10 05 33.82 X G37
2020-12-17 12:29:54 C 11 09 37.920 +10 05 33.70 X G37
2020-12-17 12:32:47 C 11 09 38.032 +10 05 33.56 X G37
2020-12-17 12:35:41 C 11 09 38.143 +10 05 33.42 X G37
2020-12-17 12:38:35 C 11 09 38.254 +10 05 33.27 X G37
2020-12-17 12:41:28 C 11 09 38.364 +10 05 33.15 X G37
2020-12-17 13:13:17 C 11 09 39.562 +10 05 31.67 X G37
2020-12-17 13:16:16 C 11 09 39.675 +10 05 31.54 X G37
2020-12-17 13:19:10 C 11 09 39.787 +10 05 31.39 X G37
2020-12-17 13:22:03 C 11 09 39.897 +10 05 31.26 X G37
2020-12-17 13:24:57 C 11 09 40.002 +10 05 31.12 X G37
2020-12-17 13:27:50 C 11 09 40.111 +10 05 30.99 X G37
2020-12-17 13:30:44 C 11 09 40.221 +10 05 30.82 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)