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 06:06:01 C 22 09 23.533 -18 19 16.52 X I33
2022-07-05 06:07:43 C 22 09 23.633 -18 19 16.69 X I33
2022-07-05 06:09:25 C 22 09 23.734 -18 19 16.84 X I33
2022-07-05 06:11:07 C 22 09 23.828 -18 19 16.99 X I33
2022-07-05 06:12:49 C 22 09 23.933 -18 19 17.15 X I33
2022-07-05 06:14:31 C 22 09 24.034 -18 19 17.30 X I33
2022-07-05 06:16:13 C 22 09 24.129 -18 19 17.46 X I33
2022-07-05 06:17:55 C 22 09 24.231 -18 19 17.61 X I33
2022-07-05 06:19:40 C 22 09 24.334 -18 19 17.76 X I33
2022-07-05 06:21:22 C 22 09 24.431 -18 19 17.92 X I33
2022-07-05 06:23:04 C 22 09 24.532 -18 19 18.07 X I33
2022-07-05 06:24:46 C 22 09 24.630 -18 19 18.22 X I33
2022-07-05 06:26:28 C 22 09 24.732 -18 19 18.37 X I33
2022-07-05 06:28:10 C 22 09 24.823 -18 19 18.51 X I33
2022-07-05 06:29:52 C 22 09 24.932 -18 19 18.67 X I33
2022-07-05 06:31:34 C 22 09 25.036 -18 19 18.84 X I33
2022-07-05 06:33:16 C 22 09 25.124 -18 19 18.97 X I33
2022-07-05 06:34:58 C 22 09 25.229 -18 19 19.13 X I33
2022-07-05 06:36:40 C 22 09 25.334 -18 19 19.29 X I33
2022-07-05 06:38:22 C 22 09 25.425 -18 19 19.43 X I33
2022-07-05 06:40:04 C 22 09 25.528 -18 19 19.58 X I33
2022-07-05 06:41:47 C 22 09 25.629 -18 19 19.73 X I33
2022-07-05 06:43:31 C 22 09 25.727 -18 19 19.89 X I33
2022-07-05 06:45:13 C 22 09 25.824 -18 19 20.03 X I33
2022-07-05 06:46:55 C 22 09 25.926 -18 19 20.19 X I33
2022-07-05 06:48:37 C 22 09 26.025 -18 19 20.33 X I33
2022-07-05 06:50:20 C 22 09 26.124 -18 19 20.49 X I33
2022-07-05 06:52:02 C 22 09 26.224 -18 19 20.64 X I33
2022-07-05 06:53:44 C 22 09 26.320 -18 19 20.78 X I33
2022-07-05 06:55:26 C 22 09 26.417 -18 19 20.92 X I33
2022-07-05 06:57:08 C 22 09 26.525 -18 19 21.09 X I33
2022-07-05 06:58:50 C 22 09 26.618 -18 19 21.22 X I33
2022-07-05 07:00:32 C 22 09 26.719 -18 19 21.38 X I33
2022-07-05 07:02:14 C 22 09 26.821 -18 19 21.53 X I33
2022-07-05 07:03:56 C 22 09 26.914 -18 19 21.66 X I33
2022-07-05 07:05:38 C 22 09 27.011 -18 19 21.81 X I33
2022-07-05 07:07:22 C 22 09 27.117 -18 19 21.97 X I33
2022-07-05 07:09:04 C 22 09 27.222 -18 19 22.12 X I33
2022-07-05 07:10:46 C 22 09 27.309 -18 19 22.25 X I33
2022-07-05 07:12:28 C 22 09 27.414 -18 19 22.41 X I33
2022-07-05 07:14:10 C 22 09 27.515 -18 19 22.54 X I33
2022-07-05 07:15:52 C 22 09 27.613 -18 19 22.70 X I33
2022-07-05 07:17:34 C 22 09 27.707 -18 19 22.83 X I33
2022-07-05 07:19:17 C 22 09 27.803 -18 19 22.97 X I33
2022-07-05 07:20:59 C 22 09 27.912 -18 19 23.13 X I33
2022-07-05 07:22:41 C 22 09 28.008 -18 19 23.27 X I33
2022-07-05 07:24:23 C 22 09 28.108 -18 19 23.43 X I33
2022-07-05 07:26:05 C 22 09 28.208 -18 19 23.57 X I33
2022-07-05 07:27:47 C 22 09 28.304 -18 19 23.71 X I33
2022-07-05 07:29:29 C 22 09 28.401 -18 19 23.85 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)