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
2022-10-26 06:48:48 S 07 26 29.796 +01 03 50.37 X 275
2022-10-26 07:39:29 C 07 26 36.42 +01 07 15.5 Z X07
2022-10-26 08:05:16 C 07 26 40.18 +01 08 12.6 Z X07
2022-10-26 08:25:13 C 07 26 43.00 +01 08 57.3 Z X07
2022-10-26 11:03:13 C 07 27 08.59 +01 13 14.4 U V16
2022-10-26 11:07:47 C 07 27 09.30 +01 13 24.9 U V16
2022-10-26 11:12:20 C 07 27 09.89 +01 13 34.5 U V16
2022-10-26 11:16:52 C 07 27 10.52 +01 13 44.7 U V16
2022-10-26 11:21:25 C 07 27 11.15 +01 13 54.2 U V16
2022-10-26 11:25:57 C 07 27 11.81 +01 14 04.6 U V16
2022-10-26 11:30:29 C 07 27 12.44 +01 14 14.7 U V16
2022-10-26 11:35:01 C 07 27 13.08 +01 14 24.5 U V16
2022-10-26 14:18:27 C 07 27 40.193 +01 20 41.89 V T08
2022-10-26 14:29:16 C 07 27 41.688 +01 21 05.65 V T08
2022-10-26 14:33:55 C 07 27 42.334 +01 21 15.95 V T08
2022-10-26 14:53:40 C 07 27 45.050 +01 21 59.33 V T08
2022-10-26 16:45:47 C 07 28 05.592 +01 25 41.56 q Q21
2022-10-26 16:54:16 C 07 28 06.854 +01 26 00.38 q Q21
2022-10-26 17:01:53 C 07 28 07.970 +01 26 17.02 q Q21
2022-10-26 17:11:11 C 07 28 09.295 +01 26 37.36 q Q21
2022-10-26 17:19:41 C 07 28 10.529 +01 26 55.93 q Q21
2022-10-26 17:28:09 C 07 28 11.724 +01 27 14.72 q Q21
2022-10-26 17:35:46 C 07 28 12.830 +01 27 31.36 q Q21
2022-10-26 17:52:34 V 07 28 15.66 +01 28 10.7 V 270
2022-10-26 17:52:34 v 1 134.17909 +34.51190 270
2022-10-26 18:01:30 V 07 28 16.92 +01 28 29.9 V 270
2022-10-26 18:01:30 v 1 134.17909 +34.51190 270
2022-10-26 18:11:02 V 07 28 18.29 +01 28 51.0 V 270
2022-10-26 18:11:02 v 1 134.17909 +34.51190 270
2022-10-26 18:20:22 V 07 28 19.60 +01 29 11.2 V 270
2022-10-26 18:20:22 v 1 134.17909 +34.51190 270
2022-10-26 18:29:07 V 07 28 20.37 +01 29 29.1 V 270
2022-10-26 18:29:07 v 1 140.20213 +36.17828 270
2022-10-26 18:41:49 V 07 28 22.10 +01 29 56.9 V 270
2022-10-26 18:41:49 v 1 140.20213 +36.17828 270
2022-10-26 18:54:19 V 07 28 23.85 +01 30 21.9 V 270
2022-10-26 18:54:19 v 1 140.20213 +36.17828 270
2022-10-26 19:07:02 V 07 28 25.73 +01 30 51.4 V 270
2022-10-26 19:07:02 v 1 140.20213 +36.17828 270
2022-10-27 03:11:46 C 07 29 43.10 +01 48 10.6 V 204
2022-10-27 03:30:11 C 07 29 45.67 +01 48 50.3 V 204
2022-10-27 03:50:46 C 07 29 48.56 +01 49 34.7 V 204
2022-10-27 04:11:20 C 07 29 51.41 +01 50 18.8 V 204
2022-10-27 04:30:48 C 07 29 54.13 +01 51 00.8 V 204
2022-10-27 09:47:04 S 07 30 45.538 +02 02 30.00 X 275
2022-10-27 17:01:05 C 07 31 53.237 +02 17 47.87 q Q21
2022-10-27 17:09:33 C 07 31 54.362 +02 18 05.62 q Q21
2022-10-27 17:18:02 C 07 31 55.548 +02 18 23.72 q Q21
2022-10-27 17:26:32 C 07 31 56.700 +02 18 41.58 q Q21
2022-10-27 17:43:28 C 07 31 58.970 +02 19 17.44 q Q21
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)