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
2019-01-31 08:34:59 C 12 27 57.674 +03 21 08.23 X G37
2019-01-31 08:37:12 C 12 27 57.641 +03 21 08.69 X G37
2019-01-31 08:39:26 C 12 27 57.607 +03 21 09.20 X G37
2019-01-31 08:41:39 C 12 27 57.574 +03 21 09.67 X G37
2019-01-31 08:43:53 C 12 27 57.538 +03 21 10.15 X G37
2019-01-31 08:46:13 C 12 27 57.503 +03 21 10.64 X G37
2019-01-31 08:48:26 C 12 27 57.469 +03 21 11.13 X G37
2019-01-31 08:50:40 C 12 27 57.435 +03 21 11.61 X G37
2019-01-31 08:52:53 C 12 27 57.401 +03 21 12.09 X G37
2019-01-31 08:55:07 C 12 27 57.366 +03 21 12.58 X G37
2019-01-31 08:57:25 C 12 27 57.330 +03 21 13.08 X G37
2019-01-31 08:59:39 C 12 27 57.297 +03 21 13.56 X G37
2019-01-31 09:01:52 C 12 27 57.262 +03 21 14.05 X G37
2019-01-31 09:04:06 C 12 27 57.228 +03 21 14.51 X G37
2019-01-31 09:06:19 C 12 27 57.195 +03 21 14.97 X G37
2019-01-31 09:08:38 C 12 27 57.158 +03 21 15.49 X G37
2019-01-31 09:10:52 C 12 27 57.123 +03 21 15.98 X G37
2019-01-31 09:13:05 C 12 27 57.091 +03 21 16.43 X G37
2019-01-31 09:15:19 C 12 27 57.055 +03 21 16.93 X G37
2019-01-31 09:17:32 C 12 27 57.021 +03 21 17.41 X G37
2019-01-31 11:22:53 C 12 27 55.048 +03 21 44.42 X G37
2019-01-31 11:26:07 C 12 27 54.998 +03 21 45.10 X G37
2019-01-31 11:52:03 C 12 27 54.583 +03 21 50.74 X G37
2019-01-31 11:55:16 C 12 27 54.531 +03 21 51.43 X G37
2019-01-31 11:58:30 C 12 27 54.481 +03 21 52.11 X G37
2019-01-31 12:01:44 C 12 27 54.431 +03 21 52.78 X G37
2019-01-31 12:05:05 C 12 27 54.375 +03 21 53.53 X G37
2019-01-31 12:08:18 C 12 27 54.325 +03 21 54.21 X G37
2019-01-31 12:11:32 C 12 27 54.275 +03 21 54.90 X G37
2019-01-31 12:14:45 C 12 27 54.219 +03 21 55.64 X G37
2019-01-31 12:17:59 C 12 27 54.174 +03 21 56.30 X G37
2019-01-31 12:21:15 C 12 27 54.117 +03 21 57.04 X G37
2019-01-31 12:24:29 C 12 27 54.068 +03 21 57.72 X G37
2019-01-31 12:27:42 C 12 27 54.018 +03 21 58.38 X G37
2019-01-31 12:30:56 C 12 27 53.965 +03 21 59.12 X G37
2019-01-31 13:00:16 C 12 27 53.499 +03 22 05.47 X G37
2019-01-31 13:03:29 C 12 27 53.446 +03 22 06.18 X G37
2019-01-31 13:06:43 C 12 27 53.398 +03 22 06.83 X G37
2019-01-31 13:10:02 C 12 27 53.344 +03 22 07.54 X G37
2019-01-31 13:13:15 C 12 27 53.297 +03 22 08.23 X G37
2019-01-31 13:16:29 C 12 27 53.244 +03 22 08.92 X G37
2019-01-31 13:19:42 C 12 27 53.194 +03 22 09.63 X G37
2019-01-31 13:22:56 C 12 27 53.140 +03 22 10.33 X G37
2019-01-31 13:26:27 C 12 27 53.084 +03 22 11.08 X G37
2019-01-31 13:29:40 C 12 27 53.037 +03 22 11.78 X G37
2019-01-31 13:32:54 C 12 27 52.986 +03 22 12.47 X G37
2019-02-04 12:50:36 C 12 26 10.919 +03 45 01.65 V F52
2019-02-04 13:07:26 C 12 26 10.512 +03 45 06.20 V F52
2019-02-04 13:24:26 C 12 26 10.105 +03 45 10.61 V F52
2019-02-04 13:25:22 C 12 26 10.081 +03 45 10.81 U F52
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)