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
2019-04-02 07:17:28 C 11 15 14.489 +11 25 50.43 V F51
2019-04-02 07:34:21 C 11 15 13.705 +11 25 53.14 V F51
2019-04-04 05:44:19 C 11 13 15.125 +11 32 33.65 V G96
2019-04-04 05:52:25 C 11 13 14.71 +11 32 34.8 V G96
2019-04-04 06:00:31 C 11 13 14.423 +11 32 35.60 V G96
2019-04-04 06:08:35 C 11 13 14.10 +11 32 37.3 V G96
2019-04-05 23:46:14 C 11 11 34.928 +11 37 51.83 X 309
2019-04-05 23:47:30 C 11 11 34.876 +11 37 52.01 X 309
2019-04-05 23:48:45 C 11 11 34.826 +11 37 52.17 X 309
2019-04-05 23:50:02 C 11 11 34.775 +11 37 52.28 X 309
2019-04-05 23:51:18 C 11 11 34.724 +11 37 52.46 X 309
2019-04-05 23:52:34 C 11 11 34.674 +11 37 52.60 X 309
2019-04-05 23:53:50 C 11 11 34.624 +11 37 52.73 X 309
2019-04-05 23:55:12 C 11 11 34.570 +11 37 52.94 X 309
2019-04-05 23:56:29 C 11 11 34.518 +11 37 53.09 X 309
2019-04-05 23:57:45 C 11 11 34.470 +11 37 53.22 X 309
2019-04-05 23:59:01 C 11 11 34.417 +11 37 53.40 X 309
2019-04-06 00:00:17 C 11 11 34.364 +11 37 53.50 X 309
2019-04-06 00:01:33 C 11 11 34.315 +11 37 53.67 X 309
2019-04-06 00:02:49 C 11 11 34.266 +11 37 53.84 X 309
2019-04-06 00:04:11 C 11 11 34.209 +11 37 53.99 X 309
2019-04-06 00:05:28 C 11 11 34.157 +11 37 54.13 X 309
2019-04-06 00:06:44 C 11 11 34.108 +11 37 54.28 X 309
2019-04-06 00:08:00 C 11 11 34.059 +11 37 54.41 X 309
2019-04-06 00:09:16 C 11 11 34.006 +11 37 54.58 X 309
2019-04-06 00:10:32 C 11 11 33.953 +11 37 54.72 X 309
2019-04-06 00:11:48 C 11 11 33.905 +11 37 54.88 X 309
2019-04-06 00:13:11 C 11 11 33.853 +11 37 55.03 X 309
2019-04-06 00:15:44 C 11 11 33.746 +11 37 55.37 X 309
2019-04-06 00:29:50 C 11 11 33.183 +11 37 56.99 X 309
2019-04-06 00:31:12 C 11 11 33.129 +11 37 57.13 X 309
2019-04-06 00:32:28 C 11 11 33.077 +11 37 57.30 X 309
2019-04-06 00:33:44 C 11 11 33.027 +11 37 57.43 X 309
2019-04-06 00:35:00 C 11 11 32.976 +11 37 57.56 X 309
2019-04-06 00:36:16 C 11 11 32.923 +11 37 57.75 X 309
2019-04-06 00:37:32 C 11 11 32.872 +11 37 57.86 X 309
2019-04-06 00:38:48 C 11 11 32.824 +11 37 58.02 X 309
2019-04-06 00:40:11 C 11 11 32.768 +11 37 58.17 X 309
2019-04-06 00:41:27 C 11 11 32.715 +11 37 58.34 X 309
2019-04-06 00:42:44 C 11 11 32.665 +11 37 58.48 X 309
2019-04-06 00:44:00 C 11 11 32.615 +11 37 58.63 X 309
2019-04-06 00:45:16 C 11 11 32.569 +11 37 58.72 X 309
2019-04-06 00:46:32 C 11 11 32.512 +11 37 58.92 X 309
2019-04-06 00:47:48 C 11 11 32.462 +11 37 59.06 X 309
2019-04-06 00:49:11 C 11 11 32.405 +11 37 59.22 X 309
2019-04-06 00:50:28 C 11 11 32.354 +11 37 59.38 X 309
2019-04-06 00:51:45 C 11 11 32.302 +11 37 59.54 X 309
2019-04-06 00:53:01 C 11 11 32.250 +11 37 59.68 X 309
2019-04-06 00:54:18 C 11 11 32.200 +11 37 59.82 X 309
2019-04-06 00:55:35 C 11 11 32.148 +11 37 59.97 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)