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
2022-07-05 04:27:37 C 22 09 17.706 -18 19 07.33 X I33
2022-07-05 04:29:19 C 22 09 17.809 -18 19 07.49 X I33
2022-07-05 04:31:01 C 22 09 17.910 -18 19 07.65 X I33
2022-07-05 04:32:43 C 22 09 18.012 -18 19 07.82 X I33
2022-07-05 04:34:25 C 22 09 18.114 -18 19 07.98 X I33
2022-07-05 04:36:07 C 22 09 18.215 -18 19 08.14 X I33
2022-07-05 04:37:49 C 22 09 18.315 -18 19 08.30 X I33
2022-07-05 04:39:31 C 22 09 18.417 -18 19 08.46 X I33
2022-07-05 04:52:13 C 22 09 19.175 -18 19 09.68 X I33
2022-07-05 04:53:55 C 22 09 19.273 -18 19 09.83 X I33
2022-07-05 04:55:37 C 22 09 19.381 -18 19 10.00 X I33
2022-07-05 04:57:19 C 22 09 19.479 -18 19 10.16 X I33
2022-07-05 04:59:01 C 22 09 19.580 -18 19 10.31 X I33
2022-07-05 05:00:43 C 22 09 19.680 -18 19 10.48 X I33
2022-07-05 05:02:25 C 22 09 19.780 -18 19 10.64 X I33
2022-07-05 05:04:07 C 22 09 19.879 -18 19 10.79 X I33
2022-07-05 05:07:25 C 22 09 20.076 -18 19 11.11 X I33
2022-07-05 05:09:07 C 22 09 20.181 -18 19 11.28 X I33
2022-07-05 05:10:49 C 22 09 20.280 -18 19 11.44 X I33
2022-07-05 05:12:31 C 22 09 20.379 -18 19 11.60 X I33
2022-07-05 05:14:13 C 22 09 20.480 -18 19 11.74 X I33
2022-07-05 05:15:55 C 22 09 20.580 -18 19 11.91 X I33
2022-07-05 05:17:37 C 22 09 20.682 -18 19 12.07 X I33
2022-07-05 05:19:19 C 22 09 20.784 -18 19 12.23 X I33
2022-07-05 05:21:01 C 22 09 20.882 -18 19 12.39 X I33
2022-07-05 05:22:43 C 22 09 20.982 -18 19 12.55 X I33
2022-07-05 05:24:25 C 22 09 21.083 -18 19 12.71 X I33
2022-07-05 05:26:08 C 22 09 21.183 -18 19 12.87 X I33
2022-07-05 05:27:50 C 22 09 21.288 -18 19 13.02 X I33
2022-07-05 05:29:32 C 22 09 21.384 -18 19 13.18 X I33
2022-07-05 05:31:53 C 22 09 21.525 -18 19 13.40 X I33
2022-07-05 05:33:35 C 22 09 21.625 -18 19 13.56 X I33
2022-07-05 05:35:17 C 22 09 21.725 -18 19 13.71 X I33
2022-07-05 05:36:59 C 22 09 21.826 -18 19 13.88 X I33
2022-07-05 05:38:41 C 22 09 21.932 -18 19 14.03 X I33
2022-07-05 05:40:23 C 22 09 22.026 -18 19 14.18 X I33
2022-07-05 05:42:05 C 22 09 22.129 -18 19 14.35 X I33
2022-07-05 05:43:47 C 22 09 22.225 -18 19 14.50 X I33
2022-07-05 05:45:29 C 22 09 22.326 -18 19 14.65 X I33
2022-07-05 05:47:11 C 22 09 22.424 -18 19 14.81 X I33
2022-07-05 05:48:53 C 22 09 22.525 -18 19 14.96 X I33
2022-07-05 05:50:35 C 22 09 22.628 -18 19 15.14 X I33
2022-07-05 05:52:17 C 22 09 22.726 -18 19 15.28 X I33
2022-07-05 05:53:59 C 22 09 22.828 -18 19 15.43 X I33
2022-07-05 05:55:48 C 22 09 22.930 -18 19 15.60 X I33
2022-07-05 05:57:30 C 22 09 23.035 -18 19 15.76 X I33
2022-07-05 05:59:12 C 22 09 23.130 -18 19 15.89 X I33
2022-07-05 06:00:54 C 22 09 23.232 -18 19 16.07 X I33
2022-07-05 06:02:36 C 22 09 23.339 -18 19 16.24 X I33
2022-07-05 06:04:19 C 22 09 23.433 -18 19 16.37 X I33
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)