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 09:11:50 C 22 09 34.366 -18 19 32.13 X I33
2022-07-05 09:13:33 C 22 09 34.459 -18 19 32.26 X I33
2022-07-05 09:15:15 C 22 09 34.551 -18 19 32.35 X I33
2022-07-05 09:16:57 C 22 09 34.654 -18 19 32.50 X I33
2022-07-05 09:18:39 C 22 09 34.753 -18 19 32.62 X I33
2022-07-05 09:20:22 C 22 09 34.855 -18 19 32.76 X I33
2022-07-05 09:22:04 C 22 09 34.956 -18 19 32.89 X I33
2022-07-05 09:23:46 C 22 09 35.057 -18 19 33.02 X I33
2022-07-05 09:25:28 C 22 09 35.145 -18 19 33.12 X I33
2022-07-05 09:27:10 C 22 09 35.257 -18 19 33.29 X I33
2022-07-05 09:37:47 C 22 09 35.870 -18 19 34.06 X I33
2022-07-05 09:39:29 C 22 09 35.973 -18 19 34.20 X I33
2022-07-05 09:41:11 C 22 09 36.071 -18 19 34.32 X I33
2022-07-05 09:42:54 C 22 09 36.169 -18 19 34.45 X I33
2022-07-05 09:44:36 C 22 09 36.266 -18 19 34.57 X I33
2022-07-05 09:46:18 C 22 09 36.370 -18 19 34.71 X I33
2022-07-05 09:48:00 C 22 09 36.469 -18 19 34.83 X I33
2022-07-05 09:49:42 C 22 09 36.565 -18 19 34.94 X I33
2022-07-05 09:51:24 C 22 09 36.668 -18 19 35.08 X I33
2022-07-05 09:53:07 C 22 09 36.767 -18 19 35.21 X I33
2022-07-05 09:54:51 C 22 09 36.872 -18 19 35.34 X I33
2022-07-05 09:56:33 C 22 09 36.971 -18 19 35.46 X I33
2022-07-05 09:58:16 C 22 09 37.070 -18 19 35.59 X I33
2022-07-05 09:59:58 C 22 09 37.169 -18 19 35.70 X I33
2022-07-05 10:01:41 C 22 09 37.269 -18 19 35.82 X I33
2022-07-05 10:03:23 C 22 09 37.360 -18 19 35.94 X I33
2022-07-05 10:05:05 C 22 09 37.468 -18 19 36.09 X I33
2022-07-05 10:06:48 C 22 09 37.575 -18 19 36.22 X I33
2022-07-05 10:08:30 C 22 09 37.673 -18 19 36.33 X I33
2022-07-05 10:10:12 C 22 09 37.763 -18 19 36.44 X I33
2022-07-05 10:11:55 C 22 09 37.876 -18 19 36.58 X I33
2022-07-05 10:13:37 C 22 09 37.973 -18 19 36.71 X I33
2022-07-05 10:15:19 C 22 09 38.075 -18 19 36.84 X I33
2022-07-05 10:17:01 C 22 09 38.177 -18 19 36.96 X I33
2022-07-05 10:18:46 C 22 09 38.269 -18 19 37.08 X I33
2022-07-05 10:20:28 C 22 09 38.380 -18 19 37.21 X I33
2022-07-05 10:22:10 C 22 09 38.472 -18 19 37.32 X I33
2022-07-05 10:23:52 C 22 09 38.580 -18 19 37.45 X I33
2022-07-05 10:25:46 C 22 09 38.688 -18 19 37.57 X I33
2022-07-05 10:27:27 C 22 09 38.788 -18 19 37.70 X I33
2022-07-05 10:29:09 C 22 09 38.889 -18 19 37.83 X I33
2022-07-05 10:30:50 C 22 09 38.986 -18 19 37.95 X I33
2022-07-05 10:32:31 C 22 09 39.089 -18 19 38.08 X I33
2022-07-05 10:34:12 C 22 09 39.180 -18 19 38.18 X I33
2022-07-05 10:35:53 C 22 09 39.284 -18 19 38.30 X I33
2022-07-05 10:37:35 C 22 09 39.384 -18 19 38.42 X I33
2022-07-05 10:39:16 C 22 09 39.481 -18 19 38.54 X I33
2022-07-05 10:40:57 C 22 09 39.581 -18 19 38.66 X I33
2022-07-05 10:42:45 C 22 09 39.688 -18 19 38.78 X I33
2022-07-05 10:44:26 C 22 09 39.788 -18 19 38.91 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)