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
2022-07-02 07:10:37 C 22 04 56.610 -18 14 30.84 X 269
2022-07-02 07:12:38 C 22 04 56.727 -18 14 30.96 X 269
2022-07-02 07:14:39 C 22 04 56.845 -18 14 31.07 X 269
2022-07-02 07:16:40 C 22 04 56.966 -18 14 31.19 X 269
2022-07-02 07:18:41 C 22 04 57.088 -18 14 31.32 X 269
2022-07-02 07:20:42 C 22 04 57.202 -18 14 31.42 X 269
2022-07-02 07:22:43 C 22 04 57.323 -18 14 31.54 X 269
2022-07-02 07:24:44 C 22 04 57.440 -18 14 31.65 X 269
2022-07-02 07:26:46 C 22 04 57.562 -18 14 31.78 X 269
2022-07-02 07:28:47 C 22 04 57.678 -18 14 31.88 X 269
2022-07-02 07:30:48 C 22 04 57.794 -18 14 32.00 X 269
2022-07-02 07:32:49 C 22 04 57.915 -18 14 32.12 X 269
2022-07-02 07:34:50 C 22 04 58.032 -18 14 32.23 X 269
2022-07-02 07:36:51 C 22 04 58.153 -18 14 32.35 X 269
2022-07-02 07:38:52 C 22 04 58.271 -18 14 32.46 X 269
2022-07-02 07:40:53 C 22 04 58.389 -18 14 32.57 X 269
2022-07-02 07:42:54 C 22 04 58.507 -18 14 32.68 X 269
2022-07-02 07:44:55 C 22 04 58.625 -18 14 32.80 X 269
2022-07-02 07:46:56 C 22 04 58.745 -18 14 32.90 X 269
2022-07-02 07:48:57 C 22 04 58.863 -18 14 33.01 X 269
2022-07-02 07:50:58 C 22 04 58.980 -18 14 33.12 X 269
2022-07-02 07:52:59 C 22 04 59.097 -18 14 33.24 X 269
2022-07-02 07:55:00 C 22 04 59.219 -18 14 33.35 X 269
2022-07-02 07:57:01 C 22 04 59.336 -18 14 33.46 X 269
2022-07-02 07:59:02 C 22 04 59.455 -18 14 33.57 X 269
2022-07-02 08:01:03 C 22 04 59.572 -18 14 33.67 X 269
2022-07-02 08:03:04 C 22 04 59.688 -18 14 33.79 X 269
2022-07-02 08:05:05 C 22 04 59.813 -18 14 33.91 X 269
2022-07-02 08:07:06 C 22 04 59.928 -18 14 34.01 X 269
2022-07-02 08:13:10 C 22 05 00.283 -18 14 34.33 X 269
2022-07-02 08:17:12 C 22 05 00.519 -18 14 34.55 X 269
2022-07-02 08:19:13 C 22 05 00.640 -18 14 34.65 X 269
2022-07-02 08:21:12 C 22 05 00.759 -18 14 34.76 X 269
2022-07-02 08:23:14 C 22 05 00.874 -18 14 34.86 X 269
2022-07-02 08:25:15 C 22 05 00.995 -18 14 34.98 X 269
2022-07-02 08:27:16 C 22 05 01.112 -18 14 35.08 X 269
2022-07-02 08:29:17 C 22 05 01.229 -18 14 35.19 X 269
2022-07-02 08:31:18 C 22 05 01.348 -18 14 35.29 X 269
2022-07-02 08:33:19 C 22 05 01.468 -18 14 35.40 X 269
2022-07-02 08:35:20 C 22 05 01.585 -18 14 35.50 X 269
2022-07-02 08:37:21 C 22 05 01.704 -18 14 35.61 X 269
2022-07-02 08:39:22 C 22 05 01.818 -18 14 35.71 X 269
2022-07-02 08:41:23 C 22 05 01.941 -18 14 35.82 X 269
2022-07-02 08:43:24 C 22 05 02.059 -18 14 35.91 X 269
2022-07-02 08:45:25 C 22 05 02.179 -18 14 36.02 X 269
2022-07-02 08:47:26 C 22 05 02.296 -18 14 36.11 X 269
2022-07-02 08:49:27 C 22 05 02.411 -18 14 36.21 X 269
2022-07-02 08:51:27 C 22 05 02.530 -18 14 36.33 X 269
2022-07-02 08:53:28 C 22 05 02.649 -18 14 36.42 X 269
2022-07-02 08:55:30 C 22 05 02.769 -18 14 36.53 X 269
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)