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
2019-04-07 04:47:15 C 11 10 29.048 +11 40 57.05 X 309
2019-04-07 04:48:33 C 11 10 28.998 +11 40 57.17 X 309
2019-04-07 04:49:50 C 11 10 28.948 +11 40 57.30 X 309
2019-04-07 04:51:08 C 11 10 28.896 +11 40 57.41 X 309
2019-04-07 04:52:34 C 11 10 28.842 +11 40 57.53 X 309
2019-04-07 04:53:51 C 11 10 28.792 +11 40 57.67 X 309
2019-04-07 04:55:08 C 11 10 28.744 +11 40 57.79 X 309
2019-04-07 05:01:50 C 11 10 28.486 +11 40 58.43 X 309
2019-04-07 05:03:15 C 11 10 28.432 +11 40 58.58 X 309
2019-04-07 05:04:42 C 11 10 28.377 +11 40 58.71 X 309
2019-04-07 05:06:48 C 11 10 28.297 +11 40 58.91 X 309
2019-04-07 05:08:11 C 11 10 28.245 +11 40 59.04 X 309
2019-04-07 05:09:37 C 11 10 28.190 +11 40 59.18 X 309
2019-04-07 05:11:02 C 11 10 28.135 +11 40 59.32 X 309
2019-04-07 05:19:44 C 11 10 27.803 +11 41 00.13 X 309
2019-04-07 05:21:07 C 11 10 27.750 +11 41 00.27 X 309
2019-04-07 05:22:33 C 11 10 27.695 +11 41 00.41 X 309
2019-04-07 05:24:10 C 11 10 27.634 +11 41 00.57 X 309
2019-04-07 05:25:37 C 11 10 27.578 +11 41 00.70 X 309
2019-04-07 05:27:10 C 11 10 27.520 +11 41 00.84 X 309
2019-04-07 05:28:35 C 11 10 27.466 +11 41 00.97 X 309
2019-04-07 05:30:00 C 11 10 27.412 +11 41 01.13 X 309
2019-04-07 05:31:28 C 11 10 27.356 +11 41 01.25 X 309
2019-04-07 05:32:56 C 11 10 27.300 +11 41 01.40 X 309
2019-04-07 05:34:21 C 11 10 27.247 +11 41 01.52 X 309
2019-04-07 05:35:45 C 11 10 27.194 +11 41 01.66 X 309
2019-04-07 05:37:16 C 11 10 27.137 +11 41 01.82 X 309
2019-04-07 05:38:42 C 11 10 27.082 +11 41 01.95 X 309
2019-04-07 05:40:08 C 11 10 27.026 +11 41 02.08 X 309
2019-04-07 05:41:43 C 11 10 26.967 +11 41 02.24 X 309
2019-04-07 05:43:10 C 11 10 26.912 +11 41 02.37 X 309
2019-04-07 05:44:47 C 11 10 26.851 +11 41 02.52 X 309
2019-04-07 05:46:11 C 11 10 26.797 +11 41 02.65 X 309
2019-04-07 05:47:42 C 11 10 26.740 +11 41 02.80 X 309
2019-04-07 05:49:31 C 11 10 26.671 +11 41 02.97 X 309
2019-04-07 05:50:56 C 11 10 26.617 +11 41 03.10 X 309
2019-04-07 05:52:23 C 11 10 26.562 +11 41 03.24 X 309
2019-04-07 05:53:50 C 11 10 26.507 +11 41 03.38 X 309
2019-04-07 05:55:16 C 11 10 26.453 +11 41 03.51 X 309
2019-04-07 05:56:41 C 11 10 26.399 +11 41 03.64 X 309
2019-04-07 05:58:23 C 11 10 26.335 +11 41 03.80 X 309
2019-04-07 05:59:48 C 11 10 26.282 +11 41 03.94 X 309
2019-04-07 06:01:16 C 11 10 26.226 +11 41 04.07 X 309
2019-04-07 06:02:42 C 11 10 26.172 +11 41 04.19 X 309
2019-04-07 06:04:06 C 11 10 26.118 +11 41 04.33 X 309
2019-04-07 06:05:33 C 11 10 26.064 +11 41 04.48 X 309
2019-04-07 06:11:26 C 11 10 25.841 +11 41 05.01 X 309
2019-04-07 06:12:51 C 11 10 25.787 +11 41 05.16 X 309
2019-04-07 06:14:16 C 11 10 25.734 +11 41 05.29 X 309
2019-04-07 06:15:42 C 11 10 25.681 +11 41 05.43 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)