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
2022-08-30 20:19:54 C 23 57 35.56 -29 33 50.9 Y 190
2022-08-30 20:29:41 C 23 57 36.93 -29 34 00.5 Y 190
2022-08-30 20:30:44 C 23 57 37.10 -29 34 01.8 Y 190
2022-08-30 20:31:48 C 23 57 37.20 -29 34 02.6 Y 190
2022-08-30 20:32:51 C 23 57 37.34 -29 34 03.7 Y 190
2022-08-30 20:33:54 C 23 57 37.51 -29 34 04.8 Y 190
2022-08-30 20:34:58 C 23 57 37.65 -29 34 05.6 Y 190
2022-08-30 20:36:01 C 23 57 37.81 -29 34 06.7 Y 190
2022-08-30 20:37:12 C 23 57 37.95 -29 34 08.0 Y 190
2022-08-30 20:38:15 C 23 57 38.11 -29 34 08.9 Y 190
2022-08-30 20:39:18 C 23 57 38.23 -29 34 09.8 Y 190
2022-08-30 20:40:22 C 23 57 38.37 -29 34 11.1 Y 190
2022-08-30 20:41:25 C 23 57 38.54 -29 34 12.0 Y 190
2022-08-30 20:42:28 C 23 57 38.65 -29 34 13.0 Y 190
2022-08-30 20:43:32 C 23 57 38.81 -29 34 13.9 Y 190
2022-08-30 20:45:02 C 23 57 39.04 -29 34 15.8 Y 190
2022-08-30 20:46:05 C 23 57 39.17 -29 34 16.2 Y 190
2022-08-30 20:47:09 C 23 57 39.33 -29 34 17.4 Y 190
2022-08-30 20:48:12 C 23 57 39.46 -29 34 18.4 Y 190
2022-08-30 20:49:16 C 23 57 39.59 -29 34 19.7 Y 190
2022-08-30 20:50:19 C 23 57 39.73 -29 34 20.6 Y 190
2022-08-30 20:51:22 C 23 57 39.91 -29 34 22.0 Y 190
2022-08-31 08:54:19 C 23 59 28.654 -29 44 59.89 V W68
2022-08-31 09:00:15 C 23 59 29.496 -29 45 05.26 V W68
2022-08-31 09:36:14 C 23 59 34.697 -29 45 37.22 V W68
2022-08-31 09:54:59 C 23 59 37.440 -29 45 53.68 V W68
2022-08-31 19:46:15 C 00 01 14.95 -29 56 34.5 Y 190
2022-08-31 19:46:49 C 00 01 15.03 -29 56 35.7 Y 190
2022-08-31 19:47:21 C 00 01 15.08 -29 56 35.6 Y 190
2022-08-31 19:47:55 C 00 01 15.19 -29 56 36.6 Y 190
2022-08-31 19:48:28 C 00 01 15.25 -29 56 36.7 Y 190
2022-08-31 19:49:02 C 00 01 15.35 -29 56 37.7 Y 190
2022-08-31 19:49:35 C 00 01 15.41 -29 56 38.1 Y 190
2022-08-31 19:50:08 C 00 01 15.46 -29 56 38.7 Y 190
2022-08-31 19:50:41 C 00 01 15.59 -29 56 39.8 Y 190
2022-08-31 19:51:14 C 00 01 15.66 -29 56 39.8 Y 190
2022-08-31 19:51:48 C 00 01 15.70 -29 56 39.7 Y 190
2022-08-31 19:52:21 C 00 01 15.80 -29 56 40.9 Y 190
2022-08-31 19:52:54 C 00 01 15.90 -29 56 41.4 Y 190
2022-08-31 19:53:28 C 00 01 15.94 -29 56 41.8 Y 190
2022-08-31 19:54:01 C 00 01 16.04 -29 56 42.5 Y 190
2022-08-31 19:54:34 C 00 01 16.15 -29 56 42.7 Y 190
2022-08-31 19:55:07 C 00 01 16.21 -29 56 43.8 Y 190
2022-08-31 19:55:40 C 00 01 16.26 -29 56 44.1 Y 190
2022-08-31 19:56:14 C 00 01 16.39 -29 56 44.7 Y 190
2022-08-31 19:56:47 C 00 01 16.46 -29 56 45.1 Y 190
2022-08-31 20:06:20 C 00 01 17.83 -29 56 54.4 Y 190
2022-08-31 20:08:00 C 00 01 18.10 -29 56 55.5 Y 190
2022-08-31 20:09:07 C 00 01 18.23 -29 56 57.4 Y 190
2022-08-31 20:10:14 C 00 01 18.32 -29 56 57.9 Y 190
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)