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
2021-01-20 03:57:16 C 11 13 04.314 +12 30 31.55 X Z19
2021-01-20 03:58:25 C 11 13 04.271 +12 30 32.02 X Z19
2021-01-20 03:59:34 C 11 13 04.224 +12 30 32.49 X Z19
2021-01-20 04:00:43 C 11 13 04.181 +12 30 32.94 X Z19
2021-01-20 04:02:09 C 11 13 04.124 +12 30 33.51 X Z19
2021-01-20 04:03:19 C 11 13 04.080 +12 30 33.99 X Z19
2021-01-20 04:04:28 C 11 13 04.038 +12 30 34.44 X Z19
2021-01-20 04:05:37 C 11 13 03.992 +12 30 34.91 X Z19
2021-01-20 04:06:46 C 11 13 03.947 +12 30 35.37 X Z19
2021-01-20 04:07:55 C 11 13 03.903 +12 30 35.85 X Z19
2021-01-20 04:09:04 C 11 13 03.858 +12 30 36.29 X Z19
2021-01-20 04:10:13 C 11 13 03.814 +12 30 36.76 X Z19
2021-01-20 04:12:31 C 11 13 03.725 +12 30 37.71 X Z19
2021-01-20 04:13:41 C 11 13 03.680 +12 30 38.17 X Z19
2021-01-20 04:14:50 C 11 13 03.636 +12 30 38.63 X Z19
2021-01-20 04:32:05 C 11 13 02.969 +12 30 45.57 X Z19
2021-01-20 04:33:13 C 11 13 02.925 +12 30 46.03 X Z19
2021-01-20 04:38:09 C 11 13 02.734 +12 30 48.01 X Z19
2021-01-20 04:41:37 C 11 13 02.599 +12 30 49.42 X Z19
2021-01-20 04:43:55 C 11 13 02.510 +12 30 50.34 X Z19
2021-01-20 04:45:05 C 11 13 02.466 +12 30 50.79 X Z19
2021-01-20 04:46:14 C 11 13 02.420 +12 30 51.27 X Z19
2021-01-20 04:47:22 C 11 13 02.378 +12 30 51.71 X Z19
2021-01-20 04:49:40 C 11 13 02.288 +12 30 52.64 X Z19
2021-01-20 04:50:49 C 11 13 02.244 +12 30 53.10 X Z19
2021-01-20 05:13:04 C 11 13 01.384 +12 31 02.00 X Z19
2021-01-20 05:18:50 C 11 13 01.159 +12 31 04.32 X Z19
2021-01-20 05:19:59 C 11 13 01.115 +12 31 04.78 X Z19
2021-01-20 05:21:08 C 11 13 01.071 +12 31 05.24 X Z19
2021-01-20 05:22:17 C 11 13 01.028 +12 31 05.69 X Z19
2021-01-20 05:23:26 C 11 13 00.981 +12 31 06.17 X Z19
2021-01-20 05:25:45 C 11 13 00.893 +12 31 07.09 X Z19
2021-01-20 05:43:46 C 11 13 00.196 +12 31 14.29 X Z19
2021-01-20 05:56:26 C 11 12 59.709 +12 31 19.31 X Z19
2021-01-20 05:57:34 C 11 12 59.665 +12 31 19.78 X Z19
2021-01-20 05:58:43 C 11 12 59.618 +12 31 20.26 X Z19
2021-01-20 06:22:42 C 11 12 58.696 +12 31 29.82 X Z19
2021-01-20 06:23:52 C 11 12 58.652 +12 31 30.28 X Z19
2021-01-20 06:27:19 C 11 12 58.519 +12 31 31.65 X Z19
2021-01-20 06:28:28 C 11 12 58.476 +12 31 32.08 X Z19
2021-01-20 06:29:37 C 11 12 58.433 +12 31 32.55 X Z19
2021-01-20 06:30:46 C 11 12 58.387 +12 31 33.02 X Z19
2021-01-20 06:31:55 C 11 12 58.342 +12 31 33.47 X Z19
2021-01-20 06:33:04 C 11 12 58.297 +12 31 33.94 X Z19
2021-01-20 06:34:13 C 11 12 58.254 +12 31 34.40 X Z19
2021-01-20 06:35:22 C 11 12 58.210 +12 31 34.84 X Z19
2021-01-20 06:38:49 C 11 12 58.078 +12 31 36.21 X Z19
2021-01-20 06:39:58 C 11 12 58.034 +12 31 36.67 X Z19
2021-01-20 06:41:07 C 11 12 57.988 +12 31 37.12 X Z19
2021-01-20 06:42:17 C 11 12 57.945 +12 31 37.56 X Z19
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)