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
2022-10-05 03:15:21 C 04 58 32.21 -25 12 12.7 o 071
2022-10-05 03:16:11 C 04 58 32.51 -25 12 10.1 o 071
2022-10-05 03:17:01 C 04 58 32.91 -25 12 07.2 o 071
2022-10-05 03:17:51 C 04 58 33.25 -25 12 04.2 o 071
2022-10-05 03:18:39 C 04 58 33.62 -25 12 01.3 o 071
2022-10-05 03:19:29 C 04 58 33.94 -25 11 58.7 o 071
2022-10-05 03:20:19 C 04 58 34.28 -25 11 56.0 o 071
2022-10-05 03:21:09 C 04 58 34.67 -25 11 54.0 o 071
2022-10-05 03:21:59 C 04 58 35.07 -25 11 49.5 o 071
2022-10-05 03:22:48 C 04 58 35.35 -25 11 47.6 o 071
2022-10-05 03:23:37 C 04 58 35.69 -25 11 44.8 o 071
2022-10-05 03:24:27 C 04 58 36.04 -25 11 42.0 o 071
2022-10-05 03:25:18 C 04 58 36.37 -25 11 39.4 o 071
2022-10-05 03:26:07 C 04 58 36.73 -25 11 36.6 o 071
2022-10-05 03:26:57 C 04 58 37.11 -25 11 33.7 o 071
2022-10-06 01:18:59 C 05 08 19.844 -23 58 04.66 q 095
2022-10-06 01:45:33 C 05 08 30.687 -23 56 34.01 q 095
2022-10-06 02:12:09 C 05 08 41.510 -23 55 03.31 q 095
2022-10-06 02:54:17 C 05 09 01.198 -23 52 42.56 V K74
2022-10-06 02:56:08 C 05 09 01.939 -23 52 36.44 V K74
2022-10-06 02:58:35 C 05 09 02.959 -23 52 28.16 V K74
2022-10-06 03:01:38 C 05 09 04.217 -23 52 17.69 V K74
2022-10-06 03:03:30 C 05 09 04.973 -23 52 11.32 V K74
2022-10-06 03:04:14 C 05 09 05.75 -23 52 09.0 V C23
2022-10-06 03:07:28 C 05 09 07.10 -23 51 57.9 V C23
2022-10-06 03:10:41 C 05 09 08.42 -23 51 47.2 V C23
2022-10-06 03:13:56 C 05 09 09.73 -23 51 35.9 V C23
2022-10-06 03:18:49 C 05 09 11.16 -23 51 17.7 q 215
2022-10-06 03:21:44 C 05 09 12.35 -23 51 07.6 q 215
2022-10-06 03:24:23 C 05 09 13.45 -23 50 59.2 q 215
2022-10-06 05:20:22 C 05 10 09.821 -23 41 53.38 V W68
2022-10-06 05:23:37 C 05 10 11.170 -23 41 42.76 V W68
2022-10-06 05:28:18 C 05 10 13.094 -23 41 27.46 V W68
2022-10-06 05:36:46 C 05 10 16.577 -23 40 59.63 V W68
2022-10-07 00:35:31 C 05 18 20.599 -22 35 19.00 V M22
2022-10-07 00:38:07 C 05 18 21.612 -22 35 10.18 V M22
2022-10-07 00:44:00 C 05 18 23.933 -22 34 50.09 V M22
2022-10-07 00:59:56 C 05 18 29.12 -22 36 10.9 V A92
2022-10-07 01:06:40 C 05 18 31.80 -22 35 48.6 V A92
2022-10-07 01:12:01 C 05 18 33.91 -22 35 29.1 V A92
2022-10-07 01:14:48 C 05 18 35.988 -22 33 05.11 V M22
2022-10-07 01:18:48 C 05 18 36.57 -22 35 06.1 V A92
2022-10-07 01:31:20 C 05 18 41.50 -22 34 23.1 V A92
2022-10-07 01:40:17 C 05 18 44.99 -22 33 52.0 V A92
2022-10-07 01:49:12 C 05 18 48.54 -22 33 21.0 V A92
2022-10-07 01:53:09 C 05 18 50.03 -22 33 07.5 V A92
2022-10-07 02:06:28 C 05 18 54.612 -22 32 23.01 V 089
2022-10-07 02:09:20 C 05 18 55.748 -22 32 12.97 V 089
2022-10-07 02:12:12 C 05 18 56.890 -22 32 03.15 V 089
2022-10-07 02:14:22 C 05 19 00.21 -22 31 52.6 V 204
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)