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 01:20:35 C 11 13 10.280 +12 29 27.94 X Z19
2021-01-20 01:21:43 C 11 13 10.238 +12 29 28.41 X Z19
2021-01-20 01:24:29 C 11 13 10.135 +12 29 29.54 X Z19
2021-01-20 01:25:38 C 11 13 10.093 +12 29 29.98 X Z19
2021-01-20 01:26:47 C 11 13 10.049 +12 29 30.47 X Z19
2021-01-20 01:27:56 C 11 13 10.007 +12 29 30.93 X Z19
2021-01-20 01:29:05 C 11 13 09.963 +12 29 31.42 X Z19
2021-01-20 01:30:15 C 11 13 09.920 +12 29 31.88 X Z19
2021-01-20 01:31:24 C 11 13 09.876 +12 29 32.35 X Z19
2021-01-20 01:32:32 C 11 13 09.834 +12 29 32.81 X Z19
2021-01-20 01:33:42 C 11 13 09.790 +12 29 33.29 X Z19
2021-01-20 01:34:51 C 11 13 09.746 +12 29 33.77 X Z19
2021-01-20 01:35:59 C 11 13 09.704 +12 29 34.22 X Z19
2021-01-20 01:37:08 C 11 13 09.660 +12 29 34.70 X Z19
2021-01-20 01:38:18 C 11 13 09.618 +12 29 35.15 X Z19
2021-01-20 01:39:27 C 11 13 09.574 +12 29 35.65 X Z19
2021-01-20 01:42:01 C 11 13 09.477 +12 29 36.70 X Z19
2021-01-20 01:43:10 C 11 13 09.435 +12 29 37.17 X Z19
2021-01-20 01:45:29 C 11 13 09.347 +12 29 38.10 X Z19
2021-01-20 01:46:38 C 11 13 09.305 +12 29 38.57 X Z19
2021-01-20 01:47:47 C 11 13 09.261 +12 29 39.04 X Z19
2021-01-20 01:48:56 C 11 13 09.217 +12 29 39.51 X Z19
2021-01-20 01:50:05 C 11 13 09.174 +12 29 39.98 X Z19
2021-01-20 01:51:15 C 11 13 09.130 +12 29 40.45 X Z19
2021-01-20 01:52:24 C 11 13 09.086 +12 29 40.93 X Z19
2021-01-20 01:53:33 C 11 13 09.044 +12 29 41.37 X Z19
2021-01-20 01:54:42 C 11 13 08.998 +12 29 41.86 X Z19
2021-01-20 01:55:51 C 11 13 08.957 +12 29 42.34 X Z19
2021-01-20 01:59:35 C 11 13 08.815 +12 29 43.84 X Z19
2021-01-20 02:00:45 C 11 13 08.772 +12 29 44.32 X Z19
2021-01-20 02:01:54 C 11 13 08.727 +12 29 44.78 X Z19
2021-01-20 02:04:12 C 11 13 08.641 +12 29 45.73 X Z19
2021-01-20 02:05:21 C 11 13 08.597 +12 29 46.19 X Z19
2021-01-20 02:06:30 C 11 13 08.556 +12 29 46.64 X Z19
2021-01-20 02:08:48 C 11 13 08.467 +12 29 47.59 X Z19
2021-01-20 02:09:58 C 11 13 08.423 +12 29 48.09 X Z19
2021-01-20 02:11:07 C 11 13 08.381 +12 29 48.55 X Z19
2021-01-20 02:12:16 C 11 13 08.335 +12 29 49.02 X Z19
2021-01-20 02:13:25 C 11 13 08.291 +12 29 49.47 X Z19
2021-01-20 02:14:34 C 11 13 08.246 +12 29 49.96 X Z19
2021-01-20 02:15:43 C 11 13 08.204 +12 29 50.42 X Z19
2021-01-20 02:17:08 C 11 13 08.149 +12 29 51.01 X Z19
2021-01-20 02:18:17 C 11 13 08.107 +12 29 51.47 X Z19
2021-01-20 02:20:36 C 11 13 08.019 +12 29 52.39 X Z19
2021-01-20 02:21:45 C 11 13 07.976 +12 29 52.86 X Z19
2021-01-20 02:24:03 C 11 13 07.886 +12 29 53.82 X Z19
2021-01-20 02:25:13 C 11 13 07.844 +12 29 54.27 X Z19
2021-01-20 02:26:22 C 11 13 07.801 +12 29 54.74 X Z19
2021-01-20 02:27:31 C 11 13 07.756 +12 29 55.22 X Z19
2021-01-20 02:28:40 C 11 13 07.714 +12 29 55.67 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)