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
2022-09-28 10:11:24 C 03 40 47.01 -32 26 41.2 V H06
2022-09-28 10:14:26 C 03 40 55.190 -32 25 58.84 V T08
2022-09-28 10:20:34 C 03 40 51.31 -32 26 23.1 V H06
2022-09-28 10:30:12 C 03 41 03.49 -32 23 27.8 q E94
2022-09-28 10:33:37 C 03 41 04.332 -32 25 26.40 V T05
2022-09-28 10:47:24 C 03 41 10.829 -32 25 01.02 V T08
2022-09-28 11:04:10 C 03 41 18.773 -32 24 32.40 V T05
2022-09-28 11:11:06 C 03 41 23.39 -32 22 16.4 q E94
2022-09-28 11:18:10 C 03 41 25.306 -32 24 06.01 V T08
2022-09-28 11:32:58 C 03 41 32.285 -32 23 40.38 V T05
2022-09-28 11:52:46 C 03 41 41.474 -32 23 02.87 V T08
2022-09-28 11:55:20 C 03 41 44.76 -32 20 58.2 q E94
2022-09-28 12:05:09 C 03 41 47.316 -32 22 41.23 V T05
2022-09-28 12:30:51 C 03 41 59.184 -32 21 51.84 V T08
2022-09-28 12:40:29 C 03 42 03.722 -32 21 34.78 V T05
2022-09-28 12:57:51 C 03 42 14.86 -32 19 06.0 q E94
2022-09-28 13:14:35 C 03 42 19.428 -32 20 27.96 V T08
2022-09-28 13:21:37 C 03 42 22.790 -32 20 15.72 V T05
2022-09-28 14:00:56 C 03 42 40.850 -32 18 56.30 V T08
2022-09-28 14:08:07 C 03 42 44.292 -32 18 43.42 V T05
2022-09-28 14:46:56 C 03 43 02.150 -32 17 22.67 V T08
2022-09-28 14:55:49 C 03 43 06.408 -32 17 06.18 V T05
2022-09-28 15:22:00 C 03 43 18.454 -32 16 09.55 V T08
2022-09-28 15:28:14 C 03 43 21.499 -32 15 58.39 V T05
2022-09-28 23:49:28 C 03 47 40.476 -31 57 19.04 V M22
2022-09-28 23:55:10 C 03 47 43.147 -31 57 07.88 V M22
2022-09-29 00:02:59 C 03 47 46.834 -31 56 52.40 V M22
2022-09-29 00:16:37 C 03 47 53.227 -31 56 25.40 V M22
2022-09-29 01:45:25 C 03 48 36.50 -31 55 17.4 q A77
2022-09-29 01:47:25 C 03 48 37.45 -31 55 14.0 q A77
2022-09-29 01:49:55 C 03 48 38.61 -31 55 08.9 q A77
2022-09-29 01:52:25 C 03 48 39.82 -31 55 03.6 q A77
2022-09-29 04:17:26 C 03 49 56.67 -31 47 33.9 q I47
2022-09-29 04:38:05 C 03 50 06.57 -31 46 53.6 q I47
2022-09-29 05:07:52 C 03 50 20.77 -31 45 54.6 q I47
2022-09-29 09:35:20 C 03 52 31.02 -31 38 24.1 V H06
2022-09-29 09:38:02 C 03 52 32.27 -31 38 18.3 V H06
2022-09-29 09:47:32 C 03 52 36.67 -31 37 57.7 V H06
2022-09-29 16:07:26 C 03 55 51.58 -31 23 27.2 o P37
2022-09-29 16:09:56 C 03 55 52.83 -31 23 21.6 o P37
2022-09-29 16:12:22 C 03 55 53.96 -31 23 16.9 o P37
2022-09-29 16:14:41 C 03 55 55.14 -31 23 11.6 o P37
2022-09-29 16:16:17 C 03 55 55.80 -31 23 08.8 o P37
2022-09-29 16:19:20 C 03 55 57.25 -31 23 03.4 o P37
2022-09-29 16:20:49 C 03 55 57.84 -31 22 59.7 o P37
2022-09-29 16:22:37 C 03 55 58.70 -31 22 56.4 o P37
2022-09-29 16:24:20 C 03 55 59.79 -31 22 51.5 o P37
2022-09-29 16:27:54 C 03 56 01.35 -31 22 44.2 o P37
2022-09-29 17:47:24 C 03 56 36.64 -31 20 09.5 V P87
2022-09-29 17:58:41 C 03 56 41.90 -31 19 44.3 V P87
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)