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
2022-09-06 21:50:00 C 00 28 22.77 -32 18 34.4 Y 190
2022-09-06 21:50:24 C 00 28 22.88 -32 18 34.6 Y 190
2022-09-06 21:50:47 C 00 28 22.95 -32 18 34.5 Y 190
2022-09-06 21:51:10 C 00 28 23.03 -32 18 35.1 Y 190
2022-09-06 21:51:47 C 00 28 23.18 -32 18 36.1 Y 190
2022-09-06 21:52:20 C 00 28 23.22 -32 18 36.2 Y 190
2022-09-06 21:52:54 C 00 28 23.38 -32 18 36.7 Y 190
2022-09-06 21:53:28 C 00 28 23.45 -32 18 37.4 Y 190
2022-09-06 21:54:00 C 00 28 23.58 -32 18 38.0 Y 190
2022-09-06 21:55:08 C 00 28 23.82 -32 18 38.6 Y 190
2022-09-06 21:55:41 C 00 28 23.87 -32 18 39.3 Y 190
2022-09-06 21:56:14 C 00 28 24.03 -32 18 39.7 Y 190
2022-09-06 21:56:48 C 00 28 24.17 -32 18 40.6 Y 190
2022-09-06 21:57:21 C 00 28 24.25 -32 18 40.3 Y 190
2022-09-06 21:57:55 C 00 28 24.37 -32 18 41.4 Y 190
2022-09-06 21:58:28 C 00 28 24.52 -32 18 41.9 Y 190
2022-09-06 21:59:02 C 00 28 24.60 -32 18 42.5 Y 190
2022-09-06 21:59:35 C 00 28 24.65 -32 18 42.9 Y 190
2022-09-06 22:23:00 C 00 28 29.33 -32 19 04.3 Y 190
2022-09-06 22:23:34 C 00 28 29.45 -32 19 04.7 Y 190
2022-09-06 22:25:15 C 00 28 29.69 -32 19 06.2 Y 190
2022-09-06 22:32:38 C 00 28 31.26 -32 19 13.6 Y 190
2022-09-07 03:18:03 C 00 29 38.662 -32 22 32.95 V W68
2022-09-07 03:20:38 C 00 29 39.190 -32 22 35.58 V W68
2022-09-07 03:25:11 C 00 29 40.118 -32 22 40.37 V W68
2022-09-07 03:33:01 C 00 29 41.707 -32 22 48.47 V W68
2022-09-07 22:35:20 C 00 33 56.412 -32 40 41.63 V M22
2022-09-07 22:38:39 C 00 33 57.106 -32 40 44.90 V M22
2022-09-07 22:43:12 C 00 33 58.056 -32 40 49.30 V M22
2022-09-07 22:51:23 C 00 33 59.758 -32 40 57.32 V M22
2022-09-08 08:06:44 V 00 36 11.07 -32 48 50.6 V 270
2022-09-08 08:06:44 v 1 172.60838 -43.58700 270
2022-09-08 08:53:48 V 00 36 21.69 -32 49 39.4 V 270
2022-09-08 08:53:48 v 1 172.60838 -43.58700 270
2022-09-08 09:31:37 V 00 36 30.71 -32 50 24.9 V 270
2022-09-08 09:31:37 v 1 175.46564 -37.91871 270
2022-09-08 09:47:17 V 00 36 33.99 -32 50 35.1 V 270
2022-09-08 09:47:17 v 1 172.60838 -43.58700 270
2022-09-08 10:27:11 V 00 36 42.96 -32 51 15.8 V 270
2022-09-08 10:27:11 v 1 172.60838 -43.58700 270
2022-09-08 10:29:41 V 00 36 43.61 -32 51 25.0 V 270
2022-09-08 10:29:41 v 1 175.46564 -37.91871 270
2022-09-08 11:24:58 V 00 36 55.83 -32 52 21.0 V 270
2022-09-08 11:24:58 v 1 175.46564 -37.91871 270
2022-09-08 12:19:33 V 00 37 07.78 -32 53 14.8 V 270
2022-09-08 12:19:33 v 1 175.46564 -37.91871 270
2022-09-08 22:12:40 C 00 39 29.834 -33 02 20.83 V M22
2022-09-08 22:14:37 C 00 39 30.274 -33 02 22.85 V M22
2022-09-08 22:15:16 C 00 39 30.406 -33 02 23.28 V M22
2022-09-08 22:17:13 C 00 39 30.842 -33 02 25.40 V M22
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)