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
2022-10-30 09:11:26 C 07 41 02.92 +04 26 30.9 q H06
2022-10-30 09:13:58 C 07 41 03.11 +04 26 35.1 q H06
2022-10-30 09:22:25 C 07 41 04.513 +04 26 52.04 V 703
2022-10-30 09:29:55 C 07 41 05.370 +04 27 06.73 V 703
2022-10-30 09:37:25 C 07 41 06.292 +04 27 20.81 V 703
2022-10-30 09:44:55 C 07 41 07.184 +04 27 34.99 V 703
2022-10-30 14:30:23 C 07 41 43.279 +04 36 55.19 V T08
2022-10-30 14:35:03 C 07 41 43.790 +04 37 04.12 V T08
2022-10-30 14:39:02 C 07 41 44.230 +04 37 11.64 V T08
2022-10-30 15:11:27 C 07 41 47.782 +04 38 13.02 V T08
2022-10-31 00:36:26 C 07 43 03.68 +04 55 19.7 V L54
2022-10-31 00:47:33 C 07 43 04.99 +04 55 40.7 V L54
2022-10-31 00:58:39 C 07 43 06.36 +04 56 01.6 V L54
2022-10-31 01:10:36 C 07 43 07.67 +04 56 23.5 V L54
2022-10-31 01:22:34 C 07 43 09.04 +04 56 46.0 V L54
2022-10-31 01:35:24 C 07 43 10.51 +04 57 10.1 V L54
2022-10-31 01:49:56 C 07 43 12.16 +04 57 36.3 V L54
2022-10-31 02:55:10 B 07 43 20.13 +04 59 33.5 q M18
2022-10-31 03:05:41 B 07 43 21.34 +04 59 53.3 q M18
2022-10-31 03:16:12 B 07 43 22.53 +05 00 12.8 q M18
2022-10-31 06:47:44 V 07 43 52.23 +05 07 01.9 V 270
2022-10-31 06:47:44 v 1 262.42433 +35.56503 270
2022-10-31 07:42:43 V 07 43 59.39 +05 08 38.0 V 270
2022-10-31 07:42:43 v 1 262.42433 +35.56503 270
2022-10-31 07:45:10 C 07 43 58.303 +05 10 12.90 V W68
2022-10-31 07:49:42 C 07 43 58.795 +05 10 21.36 V W68
2022-10-31 07:58:10 C 07 43 59.729 +05 10 37.06 V W68
2022-10-31 08:14:26 C 07 44 01.507 +05 11 07.22 V W68
2022-10-31 08:29:36 V 07 44 04.84 +05 10 07.2 V 270
2022-10-31 08:29:36 v 1 262.42433 +35.56503 270
2022-10-31 08:58:12 V 07 44 07.97 +05 10 59.2 V 270
2022-10-31 08:58:12 v 1 262.42433 +35.56503 270
2022-11-01 00:18:25 C 07 46 02.24 +05 38 37.9 V 585
2022-11-01 00:19:28 C 07 46 02.36 +05 38 39.8 V 585
2022-11-01 00:20:29 C 07 46 02.48 +05 38 41.6 V 585
2022-11-01 00:21:31 C 07 46 02.60 +05 38 43.6 V 585
2022-11-01 00:22:33 C 07 46 02.71 +05 38 45.4 V 585
2022-11-01 00:23:36 C 07 46 02.82 +05 38 47.3 V 585
2022-11-01 00:24:38 C 07 46 02.94 +05 38 49.2 V 585
2022-11-01 00:25:39 C 07 46 03.06 +05 38 51.4 V 585
2022-11-01 00:26:41 C 07 46 03.15 +05 38 53.1 V 585
2022-11-01 00:27:44 C 07 46 03.25 +05 38 54.8 V 585
2022-11-01 00:28:46 C 07 46 03.37 +05 38 56.6 V 585
2022-11-01 00:29:48 C 07 46 03.52 +05 38 58.5 V 585
2022-11-01 00:30:49 C 07 46 03.63 +05 39 00.5 V 585
2022-11-01 00:31:52 C 07 46 03.74 +05 39 02.3 V 585
2022-11-01 00:32:54 C 07 46 03.86 +05 39 04.2 V 585
2022-11-01 00:33:56 C 07 46 03.97 +05 39 05.6 V 585
2022-11-01 00:34:58 C 07 46 04.05 +05 39 07.4 V 585
2022-11-01 00:35:59 C 07 46 04.20 +05 39 09.8 V 585
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)