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
2022-11-30 08:36:28 C 08 23 01.442 +20 16 34.10 V 703
2022-12-01 02:52:25 C 08 22 48.51 +20 33 47.0 V C40
2022-12-01 02:59:04 C 08 22 48.37 +20 33 53.1 V C40
2022-12-01 03:05:38 C 08 22 48.23 +20 33 59.5 V C40
2022-12-01 11:39:32 C 08 22 43.01 +20 42 16.0 V H06
2022-12-01 11:44:28 C 08 22 42.88 +20 42 20.6 V H06
2022-12-01 12:36:35 C 08 22 44.321 +20 43 19.70 V T05
2022-12-01 12:40:30 C 08 22 44.220 +20 43 23.48 V T05
2022-12-01 12:45:04 C 08 22 44.105 +20 43 27.84 V T05
2022-12-01 12:53:33 C 08 22 43.884 +20 43 36.16 V T05
2022-12-01 23:27:11 C 08 22 36.86 +20 53 06.5 X C95
2022-12-01 23:28:03 C 08 22 36.84 +20 53 07.4 X C95
2022-12-01 23:35:53 C 08 22 36.68 +20 53 15.3 X C95
2022-12-01 23:38:30 C 08 22 36.63 +20 53 17.7 X C95
2022-12-01 23:43:44 C 08 22 36.53 +20 53 22.8 X C95
2022-12-01 23:48:05 C 08 22 36.44 +20 53 27.2 X C95
2022-12-01 23:50:41 C 08 22 36.38 +20 53 29.5 X C95
2022-12-02 19:16:55 C 08 22 18.49 +21 11 26.9 q 168
2022-12-02 21:13:00 C 08 22 15.95 +21 13 18.3 q 168
2022-12-02 22:18:00 C 08 22 14.37 +21 14 20.0 q 168
2022-12-03 00:08:54 C 08 22 11.55 +21 16 03.1 q 168
2022-12-03 01:09:54 C 08 22 09.99 +21 16 58.9 q 168
2022-12-03 01:55:26 C 08 22 11.30 +21 17 50.9 V J01
2022-12-03 02:15:10 C 08 22 10.74 +21 18 09.6 V J01
2022-12-03 02:34:55 C 08 22 10.20 +21 18 28.8 V J01
2022-12-04 22:05:45 C 08 21 17.322 +21 58 22.52 W M01
2022-12-04 22:08:15 C 08 21 17.241 +21 58 24.87 W M01
2022-12-04 22:10:45 C 08 21 17.160 +21 58 27.22 W M01
2022-12-04 22:52:26 C 08 21 15.732 +21 59 06.74 W M01
2022-12-04 22:54:56 C 08 21 15.643 +21 59 09.10 W M01
2022-12-04 22:57:26 C 08 21 15.554 +21 59 11.45 W M01
2022-12-04 23:18:46 C 08 21 14.803 +21 59 31.51 W M01
2022-12-04 23:21:16 C 08 21 14.711 +21 59 33.79 W M01
2022-12-04 23:23:46 C 08 21 14.620 +21 59 36.08 W M01
2022-12-04 23:58:47 C 08 21 13.351 +22 00 08.58 W M01
2022-12-05 00:01:17 C 08 21 13.261 +22 00 10.90 W M01
2022-12-05 00:03:47 C 08 21 13.171 +22 00 13.22 W M01
2022-12-05 01:12:09 C 08 21 10.624 +22 01 15.61 W M01
2022-12-05 01:23:00 C 08 21 10.214 +22 01 25.35 W M01
2022-12-05 01:25:30 C 08 21 10.119 +22 01 27.61 W M01
2022-12-05 01:28:00 C 08 21 10.023 +22 01 29.88 W M01
2022-12-05 01:29:00 C 08 21 09.996 +22 01 30.92 W M01
2022-12-05 01:31:30 C 08 21 09.899 +22 01 33.07 W M01
2022-12-05 01:34:00 C 08 21 09.803 +22 01 35.22 W M01
2022-12-05 02:06:00 C 08 21 08.614 +22 02 03.81 W M01
2022-12-05 02:06:10 C 08 21 08.611 +22 02 03.77 W M01
2022-12-05 02:21:59 C 08 21 08.031 +22 02 17.88 W M01
2022-12-05 02:23:01 C 08 21 07.977 +22 02 18.66 W M01
2022-12-05 02:24:29 C 08 21 07.940 +22 02 20.11 W M01
2022-12-05 02:25:31 C 08 21 07.888 +22 02 20.87 W M01
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)