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 05:17:38 C 22 04 49.909 -18 14 23.85 X 269
2022-07-02 05:19:39 C 22 04 50.035 -18 14 23.99 X 269
2022-07-02 05:21:40 C 22 04 50.154 -18 14 24.11 X 269
2022-07-02 05:23:41 C 22 04 50.277 -18 14 24.25 X 269
2022-07-02 05:27:43 C 22 04 50.516 -18 14 24.50 X 269
2022-07-02 05:31:46 C 22 04 50.757 -18 14 24.77 X 269
2022-07-02 05:33:47 C 22 04 50.879 -18 14 24.91 X 269
2022-07-02 05:35:48 C 22 04 50.998 -18 14 25.03 X 269
2022-07-02 05:37:49 C 22 04 51.119 -18 14 25.17 X 269
2022-07-02 05:39:50 C 22 04 51.240 -18 14 25.30 X 269
2022-07-02 05:41:51 C 22 04 51.359 -18 14 25.42 X 269
2022-07-02 05:43:52 C 22 04 51.480 -18 14 25.55 X 269
2022-07-02 05:47:54 C 22 04 51.720 -18 14 25.81 X 269
2022-07-02 05:49:55 C 22 04 51.837 -18 14 25.93 X 269
2022-07-02 05:53:57 C 22 04 52.078 -18 14 26.19 X 269
2022-07-02 05:57:59 C 22 04 52.317 -18 14 26.44 X 269
2022-07-02 06:02:01 C 22 04 52.557 -18 14 26.69 X 269
2022-07-02 06:04:02 C 22 04 52.676 -18 14 26.82 X 269
2022-07-02 06:06:03 C 22 04 52.797 -18 14 26.94 X 269
2022-07-02 06:08:04 C 22 04 52.917 -18 14 27.07 X 269
2022-07-02 06:10:05 C 22 04 53.035 -18 14 27.20 X 269
2022-07-02 06:12:06 C 22 04 53.153 -18 14 27.33 X 269
2022-07-02 06:14:07 C 22 04 53.274 -18 14 27.45 X 269
2022-07-02 06:16:08 C 22 04 53.392 -18 14 27.57 X 269
2022-07-02 06:18:08 C 22 04 53.515 -18 14 27.70 X 269
2022-07-02 06:20:11 C 22 04 53.632 -18 14 27.82 X 269
2022-07-02 06:22:12 C 22 04 53.753 -18 14 27.95 X 269
2022-07-02 06:24:13 C 22 04 53.873 -18 14 28.08 X 269
2022-07-02 06:26:14 C 22 04 53.993 -18 14 28.19 X 269
2022-07-02 06:28:15 C 22 04 54.111 -18 14 28.32 X 269
2022-07-02 06:30:16 C 22 04 54.228 -18 14 28.44 X 269
2022-07-02 06:32:17 C 22 04 54.349 -18 14 28.57 X 269
2022-07-02 06:34:18 C 22 04 54.463 -18 14 28.67 X 269
2022-07-02 06:36:19 C 22 04 54.590 -18 14 28.81 X 269
2022-07-02 06:38:20 C 22 04 54.707 -18 14 28.93 X 269
2022-07-02 06:40:21 C 22 04 54.825 -18 14 29.05 X 269
2022-07-02 06:42:22 C 22 04 54.946 -18 14 29.17 X 269
2022-07-02 06:44:23 C 22 04 55.065 -18 14 29.29 X 269
2022-07-02 06:46:24 C 22 04 55.185 -18 14 29.42 X 269
2022-07-02 06:48:25 C 22 04 55.302 -18 14 29.54 X 269
2022-07-02 06:50:26 C 22 04 55.423 -18 14 29.65 X 269
2022-07-02 06:52:27 C 22 04 55.539 -18 14 29.77 X 269
2022-07-02 06:54:27 C 22 04 55.659 -18 14 29.89 X 269
2022-07-02 06:56:29 C 22 04 55.779 -18 14 30.02 X 269
2022-07-02 06:58:31 C 22 04 55.897 -18 14 30.14 X 269
2022-07-02 07:00:32 C 22 04 56.015 -18 14 30.25 X 269
2022-07-02 07:02:33 C 22 04 56.133 -18 14 30.37 X 269
2022-07-02 07:04:34 C 22 04 56.254 -18 14 30.49 X 269
2022-07-02 07:06:35 C 22 04 56.370 -18 14 30.61 X 269
2022-07-02 07:08:36 C 22 04 56.492 -18 14 30.72 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)