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
2021-01-20 02:30:58 C 11 13 07.623 +12 29 56.63 X Z19
2021-01-20 02:35:58 C 11 13 07.435 +12 29 58.63 X Z19
2021-01-20 02:37:07 C 11 13 07.391 +12 29 59.11 X Z19
2021-01-20 02:49:49 C 11 13 06.906 +12 30 04.26 X Z19
2021-01-20 02:50:58 C 11 13 06.862 +12 30 04.75 X Z19
2021-01-20 02:54:47 C 11 13 06.716 +12 30 06.29 X Z19
2021-01-20 02:59:24 C 11 13 06.541 +12 30 08.14 X Z19
2021-01-20 03:00:33 C 11 13 06.497 +12 30 08.63 X Z19
2021-01-20 03:01:42 C 11 13 06.453 +12 30 09.07 X Z19
2021-01-20 03:02:51 C 11 13 06.409 +12 30 09.53 X Z19
2021-01-20 03:04:01 C 11 13 06.365 +12 30 10.02 X Z19
2021-01-20 03:07:28 C 11 13 06.231 +12 30 11.44 X Z19
2021-01-20 03:09:47 C 11 13 06.143 +12 30 12.35 X Z19
2021-01-20 03:10:56 C 11 13 06.098 +12 30 12.83 X Z19
2021-01-20 03:12:05 C 11 13 06.055 +12 30 13.28 X Z19
2021-01-20 03:13:14 C 11 13 06.010 +12 30 13.77 X Z19
2021-01-20 03:14:23 C 11 13 05.967 +12 30 14.21 X Z19
2021-01-20 03:16:42 C 11 13 05.878 +12 30 15.15 X Z19
2021-01-20 03:19:00 C 11 13 05.790 +12 30 16.09 X Z19
2021-01-20 03:20:09 C 11 13 05.746 +12 30 16.54 X Z19
2021-01-20 03:21:18 C 11 13 05.700 +12 30 17.02 X Z19
2021-01-20 03:23:37 C 11 13 05.612 +12 30 17.96 X Z19
2021-01-20 03:24:46 C 11 13 05.566 +12 30 18.43 X Z19
2021-01-20 03:25:55 C 11 13 05.523 +12 30 18.88 X Z19
2021-01-20 03:27:19 C 11 13 05.471 +12 30 19.43 X Z19
2021-01-20 03:28:28 C 11 13 05.425 +12 30 19.91 X Z19
2021-01-20 03:29:37 C 11 13 05.381 +12 30 20.39 X Z19
2021-01-20 03:30:46 C 11 13 05.336 +12 30 20.86 X Z19
2021-01-20 03:31:55 C 11 13 05.292 +12 30 21.31 X Z19
2021-01-20 03:33:05 C 11 13 05.247 +12 30 21.78 X Z19
2021-01-20 03:34:14 C 11 13 05.202 +12 30 22.27 X Z19
2021-01-20 03:35:23 C 11 13 05.157 +12 30 22.72 X Z19
2021-01-20 03:36:32 C 11 13 05.114 +12 30 23.18 X Z19
2021-01-20 03:37:41 C 11 13 05.069 +12 30 23.65 X Z19
2021-01-20 03:38:51 C 11 13 05.025 +12 30 24.11 X Z19
2021-01-20 03:40:00 C 11 13 04.980 +12 30 24.59 X Z19
2021-01-20 03:41:09 C 11 13 04.935 +12 30 25.04 X Z19
2021-01-20 03:42:18 C 11 13 04.892 +12 30 25.51 X Z19
2021-01-20 03:43:27 C 11 13 04.847 +12 30 25.99 X Z19
2021-01-20 03:44:36 C 11 13 04.802 +12 30 26.44 X Z19
2021-01-20 03:45:46 C 11 13 04.758 +12 30 26.92 X Z19
2021-01-20 03:46:55 C 11 13 04.715 +12 30 27.35 X Z19
2021-01-20 03:48:03 C 11 13 04.670 +12 30 27.84 X Z19
2021-01-20 03:49:13 C 11 13 04.626 +12 30 28.29 X Z19
2021-01-20 03:50:22 C 11 13 04.579 +12 30 28.76 X Z19
2021-01-20 03:51:30 C 11 13 04.537 +12 30 29.23 X Z19
2021-01-20 03:52:39 C 11 13 04.494 +12 30 29.68 X Z19
2021-01-20 03:53:49 C 11 13 04.449 +12 30 30.16 X Z19
2021-01-20 03:54:58 C 11 13 04.404 +12 30 30.59 X Z19
2021-01-20 03:56:07 C 11 13 04.358 +12 30 31.10 X Z19
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)