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
2022-06-30 00:28:07 C 22 01 29.68 -18 12 07.6 V M28
2022-06-30 22:56:59 C 22 02 55.27 -18 12 57.1 V M28
2022-06-30 23:13:48 C 22 02 56.28 -18 12 57.9 V M28
2022-06-30 23:59:57 C 22 02 59.03 -18 13 00.4 V M28
2022-07-01 00:02:03 C 22 02 59.15 -18 13 00.4 V M28
2022-07-01 00:04:08 C 22 02 59.27 -18 13 00.5 V M28
2022-07-01 00:08:21 C 22 02 59.53 -18 13 00.8 V M28
2022-07-01 00:10:27 C 22 02 59.66 -18 13 00.8 V M28
2022-07-01 00:12:33 C 22 02 59.78 -18 13 00.9 V M28
2022-07-01 00:14:38 C 22 02 59.90 -18 13 01.1 V M28
2022-07-01 00:16:43 C 22 03 00.01 -18 13 01.3 V M28
2022-07-01 00:18:50 C 22 03 00.16 -18 13 01.3 V M28
2022-07-02 04:00:28 C 22 04 45.254 -18 14 18.68 X 269
2022-07-02 04:02:36 C 22 04 45.384 -18 14 18.83 X 269
2022-07-02 04:04:38 C 22 04 45.507 -18 14 18.96 X 269
2022-07-02 04:06:51 C 22 04 45.638 -18 14 19.12 X 269
2022-07-02 04:08:52 C 22 04 45.767 -18 14 19.26 X 269
2022-07-02 04:10:54 C 22 04 45.889 -18 14 19.37 X 269
2022-07-02 04:12:55 C 22 04 46.010 -18 14 19.53 X 269
2022-07-02 04:14:57 C 22 04 46.136 -18 14 19.67 X 269
2022-07-02 04:16:58 C 22 04 46.257 -18 14 19.81 X 269
2022-07-02 04:19:00 C 22 04 46.380 -18 14 19.94 X 269
2022-07-02 04:21:02 C 22 04 46.505 -18 14 20.08 X 269
2022-07-02 04:23:03 C 22 04 46.625 -18 14 20.23 X 269
2022-07-02 04:25:05 C 22 04 46.747 -18 14 20.37 X 269
2022-07-02 04:27:07 C 22 04 46.870 -18 14 20.50 X 269
2022-07-02 04:29:09 C 22 04 46.995 -18 14 20.63 X 269
2022-07-02 04:31:11 C 22 04 47.115 -18 14 20.76 X 269
2022-07-02 04:33:13 C 22 04 47.241 -18 14 20.91 X 269
2022-07-02 04:35:15 C 22 04 47.365 -18 14 21.04 X 269
2022-07-02 04:37:16 C 22 04 47.482 -18 14 21.18 X 269
2022-07-02 04:39:18 C 22 04 47.605 -18 14 21.31 X 269
2022-07-02 04:41:19 C 22 04 47.731 -18 14 21.45 X 269
2022-07-02 04:43:20 C 22 04 47.851 -18 14 21.57 X 269
2022-07-02 04:45:21 C 22 04 47.975 -18 14 21.73 X 269
2022-07-02 04:47:22 C 22 04 48.097 -18 14 21.86 X 269
2022-07-02 04:49:23 C 22 04 48.217 -18 14 21.99 X 269
2022-07-02 04:51:24 C 22 04 48.336 -18 14 22.12 X 269
2022-07-02 04:53:25 C 22 04 48.461 -18 14 22.26 X 269
2022-07-02 04:55:26 C 22 04 48.585 -18 14 22.40 X 269
2022-07-02 04:57:27 C 22 04 48.698 -18 14 22.53 X 269
2022-07-02 04:59:28 C 22 04 48.822 -18 14 22.66 X 269
2022-07-02 05:01:29 C 22 04 48.947 -18 14 22.79 X 269
2022-07-02 05:03:30 C 22 04 49.064 -18 14 22.92 X 269
2022-07-02 05:05:32 C 22 04 49.186 -18 14 23.05 X 269
2022-07-02 05:07:33 C 22 04 49.308 -18 14 23.19 X 269
2022-07-02 05:09:34 C 22 04 49.430 -18 14 23.33 X 269
2022-07-02 05:11:35 C 22 04 49.553 -18 14 23.47 X 269
2022-07-02 05:13:36 C 22 04 49.669 -18 14 23.59 X 269
2022-07-02 05:15:37 C 22 04 49.791 -18 14 23.71 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)