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
2015-04-12 05:07:45 C 13 18 01.351 -02 56 29.57 X G37
2015-04-12 05:09:59 C 13 18 01.217 -02 56 28.88 X G37
2015-04-12 05:12:12 C 13 18 01.086 -02 56 28.18 X G37
2015-04-12 05:14:26 C 13 18 00.955 -02 56 27.54 X G37
2015-04-12 05:16:39 C 13 18 00.818 -02 56 26.83 X G37
2015-04-13 03:55:51 C 13 16 41.453 -02 49 32.01 X G37
2015-04-13 03:58:05 C 13 16 41.312 -02 49 31.29 X G37
2015-04-13 04:00:18 C 13 16 41.177 -02 49 30.62 X G37
2015-04-13 04:03:25 C 13 16 41.000 -02 49 29.72 X G37
2015-04-13 04:06:38 C 13 16 40.801 -02 49 28.69 X G37
2015-04-13 04:09:52 C 13 16 40.613 -02 49 27.75 X G37
2015-04-13 04:13:08 C 13 16 40.411 -02 49 26.70 X G37
2015-04-13 04:16:21 C 13 16 40.231 -02 49 25.72 X G37
2015-04-13 04:19:35 C 13 16 40.031 -02 49 24.77 X G37
2015-04-13 04:22:48 C 13 16 39.846 -02 49 23.84 X G37
2015-04-13 04:26:02 C 13 16 39.653 -02 49 22.87 X G37
2015-04-13 04:29:15 C 13 16 39.453 -02 49 21.86 X G37
2015-04-13 04:42:09 C 13 16 38.685 -02 49 17.94 X G37
2015-04-13 04:48:41 C 13 16 38.297 -02 49 15.98 X G37
2015-04-13 04:51:54 C 13 16 38.103 -02 49 15.01 X G37
2015-04-13 05:04:57 C 13 16 37.322 -02 49 11.02 X G37
2015-04-13 05:08:11 C 13 16 37.135 -02 49 10.07 X G37
2015-04-13 05:14:47 C 13 16 36.735 -02 49 08.04 X G37
2015-04-13 05:31:03 C 13 16 35.766 -02 49 03.18 X G37
2015-04-13 05:34:16 C 13 16 35.571 -02 49 02.16 X G37
2015-04-13 05:37:30 C 13 16 35.374 -02 49 01.17 X G37
2015-04-13 05:40:43 C 13 16 35.184 -02 49 00.22 X G37
2015-04-13 05:43:57 C 13 16 34.995 -02 48 59.25 X G37
2015-04-13 05:47:42 C 13 16 34.768 -02 48 58.10 X G37
2015-04-13 05:50:55 C 13 16 34.577 -02 48 57.16 X G37
2015-04-13 05:54:09 C 13 16 34.385 -02 48 56.20 X G37
2015-04-13 05:57:22 C 13 16 34.188 -02 48 55.18 X G37
2015-04-13 06:00:36 C 13 16 33.997 -02 48 54.22 X G37
2015-04-13 06:03:49 C 13 16 33.800 -02 48 53.23 X G37
2015-04-13 06:07:03 C 13 16 33.607 -02 48 52.26 X G37
2015-04-13 06:26:26 C 13 16 32.446 -02 48 46.38 X G37
2015-04-13 06:29:39 C 13 16 32.251 -02 48 45.42 X G37
2015-04-13 06:49:14 C 13 16 31.082 -02 48 39.49 X G37
2015-04-13 06:55:41 C 13 16 30.697 -02 48 37.56 X G37
2015-04-13 06:58:54 C 13 16 30.500 -02 48 36.56 X G37
2015-04-13 07:02:08 C 13 16 30.302 -02 48 35.58 X G37
2015-04-13 07:05:21 C 13 16 30.112 -02 48 34.60 X G37
2015-04-13 07:08:35 C 13 16 29.918 -02 48 33.63 X G37
2015-04-13 07:11:48 C 13 16 29.721 -02 48 32.64 X G37
2015-04-13 07:15:04 C 13 16 29.529 -02 48 31.65 X G37
2015-04-13 07:18:17 C 13 16 29.333 -02 48 30.68 X G37
2015-04-13 07:31:11 C 13 16 28.559 -02 48 26.78 X G37
2015-04-13 07:34:25 C 13 16 28.364 -02 48 25.79 X G37
2015-04-13 07:37:38 C 13 16 28.170 -02 48 24.81 X G37
2015-04-13 07:40:52 C 13 16 27.983 -02 48 23.88 X G37
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)