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
2022-11-26 15:39:54 C 08 23 03.722 +18 49 59.86 V T12
2022-11-26 15:40:19 C 08 23 03.716 +18 50 00.27 V T12
2022-11-26 15:40:46 C 08 23 03.717 +18 50 00.69 V T12
2022-11-26 15:41:15 C 08 23 03.712 +18 50 01.16 V T12
2022-11-26 15:41:50 C 08 23 03.705 +18 50 01.74 V T12
2022-11-26 15:42:21 C 08 23 03.701 +18 50 02.24 V T12
2022-11-26 15:42:49 C 08 23 03.698 +18 50 02.70 V T12
2022-11-26 15:43:17 C 08 23 03.693 +18 50 03.15 V T12
2022-11-26 15:43:40 C 08 23 03.688 +18 50 03.52 V T12
2022-11-26 17:09:36 C 08 23 06.614 +18 51 13.64 q Q21
2022-11-26 17:17:56 C 08 23 06.530 +18 51 22.10 q Q21
2022-11-26 17:50:39 C 08 23 06.305 +18 51 55.55 q Q21
2022-11-26 18:30:53 C 08 23 06.022 +18 52 35.94 q Q21
2022-11-26 23:32:16 C 08 23 10.03 +18 57 25.5 V K14
2022-11-26 23:57:04 C 08 23 09.99 +18 57 51.3 V K14
2022-11-27 03:28:02 C 08 23 08.36 +19 01 19.7 q 215
2022-11-27 03:31:45 C 08 23 08.33 +19 01 23.4 q 215
2022-11-27 03:35:28 C 08 23 08.31 +19 01 27.1 q 215
2022-11-27 04:28:20 C 08 23 10.903 +19 03 16.63 X X93
2022-11-27 04:34:38 C 08 23 10.853 +19 03 23.29 X X93
2022-11-27 04:40:54 C 08 23 10.795 +19 03 29.66 X X93
2022-11-27 07:48:08 C 08 23 12.005 +19 05 44.81 V 703
2022-11-27 07:55:47 C 08 23 11.958 +19 05 52.80 V 703
2022-11-27 08:03:27 C 08 23 11.922 +19 06 00.72 V 703
2022-11-27 08:11:05 C 08 23 11.872 +19 06 08.71 V 703
2022-11-27 16:24:38 C 08 23 12.42 +19 14 12.9 q D95
2022-11-27 16:37:02 C 08 23 12.31 +19 14 25.7 q D95
2022-11-27 16:41:50 C 08 23 12.27 +19 14 30.3 q D95
2022-11-27 16:43:52 C 08 23 12.444 +19 14 34.69 q Q21
2022-11-27 16:48:01 C 08 23 12.21 +19 14 36.6 q D95
2022-11-27 16:59:00 C 08 23 12.290 +19 14 49.78 q Q21
2022-11-27 17:17:56 C 08 23 12.067 +19 15 09.04 q Q21
2022-11-27 19:50:04 C 08 23 13.07 +19 17 17.3 q 168
2022-11-27 22:00:59 C 08 23 12.45 +19 19 30.1 q 168
2022-11-27 22:02:01 C 08 23 13.77 +19 19 29.7 Y 557
2022-11-27 23:06:01 C 08 23 13.57 +19 20 35.4 Y 557
2022-11-27 23:22:54 C 08 23 11.86 +19 20 51.6 q 168
2022-11-28 00:11:55 C 08 23 11.47 +19 21 39.7 q 168
2022-11-28 00:13:06 C 08 23 13.17 +19 21 43.8 Y 557
2022-11-28 01:17:07 C 08 23 12.67 +19 22 48.2 Y 557
2022-11-28 01:36:59 C 08 23 10.81 +19 23 02.4 q 168
2022-11-28 02:25:56 C 08 23 10.45 +19 23 49.2 q 168
2022-11-28 04:05:08 C 08 23 14.73 +19 26 11.4 q X33
2022-11-28 04:12:13 C 08 23 14.71 +19 26 20.0 q X33
2022-11-28 04:19:18 C 08 23 14.73 +19 26 27.4 q X33
2022-11-28 20:04:11 C 08 23 12.47 +19 41 00.0 q 168
2022-11-28 21:33:56 C 08 23 11.72 +19 42 29.8 q 168
2022-11-28 23:07:00 C 08 23 10.73 +19 44 01.6 q 168
2022-11-30 08:13:35 C 08 23 02.022 +20 16 10.92 V 703
2022-11-30 08:21:13 C 08 23 01.878 +20 16 17.65 V 703
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)