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
2022-10-16 16:19:23 C 06 37 38.580 -09 12 45.90 Z Q62
2022-10-16 16:27:06 C 06 37 40.462 -09 12 21.60 Z Q62
2022-10-16 16:34:48 C 06 37 42.350 -09 11 57.77 Z Q62
2022-10-17 00:42:08 C 06 39 52.91 -08 48 23.5 X C95
2022-10-17 01:32:26 C 06 40 05.43 -08 45 51.3 X C95
2022-10-17 01:45:24 C 06 40 07.45 -08 45 15.5 q G23
2022-10-17 02:07:23 C 06 40 12.80 -08 44 07.3 q G23
2022-10-17 02:22:43 C 06 40 17.80 -08 43 14.7 X C95
2022-10-17 02:29:23 C 06 40 18.13 -08 42 59.0 q G23
2022-10-17 03:02:20 C 06 40 27.44 -08 41 11.8 X C95
2022-10-17 03:21:34 C 06 40 32.01 -08 40 12.5 X C95
2022-10-17 03:23:43 C 06 40 32.54 -08 40 05.7 X C95
2022-10-17 03:25:52 C 06 40 33.06 -08 39 59.0 X C95
2022-10-17 03:28:01 C 06 40 33.52 -08 39 52.1 X C95
2022-10-17 03:30:11 C 06 40 34.10 -08 39 45.8 X C95
2022-10-17 03:32:19 C 06 40 34.62 -08 39 38.8 X C95
2022-10-17 03:34:28 C 06 40 35.13 -08 39 32.2 X C95
2022-10-17 03:41:55 C 06 40 36.95 -08 39 08.6 X C95
2022-10-17 07:23:37 C 06 41 36.929 -08 25 29.14 V W88
2022-10-17 07:35:53 C 06 41 39.842 -08 24 51.55 V W88
2022-10-17 08:26:48 C 06 41 51.98 -08 22 19.3 q X03
2022-10-17 08:32:29 C 06 41 53.30 -08 22 01.8 q X03
2022-10-17 08:38:10 C 06 41 54.63 -08 21 44.2 q X03
2022-10-17 08:43:51 C 06 41 55.96 -08 21 26.8 q X03
2022-10-17 08:49:33 C 06 41 57.27 -08 21 09.2 q X03
2022-10-17 08:55:14 C 06 41 58.59 -08 20 51.7 q X03
2022-10-17 09:00:54 C 06 41 59.91 -08 20 34.2 q X03
2022-10-17 09:09:06 C 06 42 01.81 -08 20 08.9 q X03
2022-10-17 17:09:33 C 06 44 07.140 -07 55 28.16 Z Q62
2022-10-17 17:15:42 C 06 44 08.544 -07 55 09.73 Z Q62
2022-10-17 17:21:12 C 06 44 09.818 -07 54 52.88 Z Q62
2022-10-18 01:17:38 S 06 46 12.254 -07 32 33.94 X 275
2022-10-18 01:33:57 C 06 46 15.18 -07 31 55.0 X C95
2022-10-18 02:15:53 C 06 46 23.65 -07 29 55.3 V K88
2022-10-18 02:17:27 C 06 46 24.02 -07 29 50.7 V K88
2022-10-18 02:20:32 C 06 46 24.72 -07 29 41.4 V K88
2022-10-18 02:22:05 C 06 46 25.08 -07 29 36.7 V K88
2022-10-18 03:11:52 C 06 46 37.78 -07 27 01.3 X C95
2022-10-18 04:41:12 C 06 46 58.05 -07 22 32.9 X C95
2022-10-18 08:24:26 C 06 47 55.42 -07 09 18.9 q X03
2022-10-18 08:38:41 C 06 47 58.58 -07 08 36.4 q X03
2022-10-18 08:52:56 C 06 48 01.72 -07 07 53.9 q X03
2022-10-18 09:07:33 C 06 48 04.94 -07 07 10.2 q X03
2022-10-18 14:25:15 C 06 49 23.304 -06 52 50.70 V T08
2022-10-18 14:32:38 C 06 49 24.893 -06 52 28.85 V T08
2022-10-18 14:59:25 C 06 49 30.648 -06 51 09.50 V T08
2022-10-18 15:06:51 C 06 49 32.242 -06 50 47.40 V T08
2022-10-18 17:56:52 S 06 50 15.779 -06 42 44.73 X 275
2022-10-19 03:16:06 C 06 52 28.34 -06 15 34.9 X C95
2022-10-19 03:19:20 C 06 52 29.03 -06 15 25.5 X C95
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)