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
2023-01-27 16:29:16 C 07 12 31.93 +30 44 55.9 V C40
2023-01-27 16:35:24 C 07 12 31.81 +30 44 55.3 V C40
2023-01-27 17:01:48 C 07 12 31.21 +30 44 54.2 V C40
2023-01-27 17:08:02 C 07 12 31.12 +30 44 53.4 V C40
2023-01-27 17:14:11 C 07 12 30.96 +30 44 53.4 V C40
2023-01-28 08:59:03 C 07 12 12.600 +30 43 45.88 V 703
2023-01-28 09:28:57 C 07 12 11.981 +30 43 43.28 V 703
2023-01-28 09:37:16 C 07 12 11.797 +30 43 41.88 V 703
2023-01-28 09:45:34 C 07 12 11.632 +30 43 40.98 V 703
2023-01-28 20:21:03 C 07 12 02.928 +30 42 45.81 X B72
2023-01-28 20:25:14 C 07 12 02.842 +30 42 45.54 X B72
2023-01-28 20:29:24 C 07 12 02.772 +30 42 45.17 X B72
2023-01-29 21:20:39 C 07 11 41.122 +30 40 35.18 X K74
2023-01-29 21:24:42 C 07 11 41.033 +30 40 34.79 X K74
2023-01-29 21:28:14 C 07 11 40.982 +30 40 34.36 X K74
2023-01-30 12:58:14 C 07 11 29.496 +30 39 10.62 q Q21
2023-01-30 13:20:59 C 07 11 29.130 +30 39 08.56 q Q21
2023-01-31 04:09:29 C 07 11 20.281 +30 37 40.58 V V00
2023-01-31 04:16:40 C 07 11 20.177 +30 37 39.94 V V00
2023-01-31 04:23:37 C 07 11 20.10 +30 37 37.1 V U94
2023-01-31 04:23:49 C 07 11 20.069 +30 37 39.32 V V00
2023-01-31 04:26:36 C 07 11 20.06 +30 37 36.9 V U94
2023-01-31 04:29:34 C 07 11 20.00 +30 37 36.7 V U94
2023-01-31 04:33:55 C 07 11 19.918 +30 37 38.46 V V00
2023-01-31 08:07:36 C 07 11 16.65 +30 37 15.3 U V16
2023-01-31 09:01:40 C 07 11 15.89 +30 37 08.6 U V16
2023-01-31 10:11:59 C 07 11 14.98 +30 36 59.5 U V16
2023-01-31 13:02:15 C 07 11 14.709 +30 36 45.61 q Q21
2023-01-31 13:09:50 C 07 11 14.595 +30 36 43.82 q Q21
2023-02-01 09:18:53 C 07 11 03.92 +30 34 29.8 V U94
2023-02-01 09:21:52 C 07 11 03.87 +30 34 29.4 V U94
2023-02-01 09:24:52 C 07 11 03.83 +30 34 29.0 V U94
2023-02-01 18:56:20 C 07 11 01.74 +30 33 22.3 X C95
2023-02-01 19:10:39 C 07 11 01.60 +30 33 20.6 X C95
2023-02-01 19:24:57 C 07 11 01.52 +30 33 21.0 X C95
2023-02-07 23:44:54 C 07 11 07.38 +30 13 34.4 X C95
2023-02-08 00:43:40 C 07 11 07.68 +30 13 24.3 X C95
2023-02-08 22:28:54 C 07 11 19.43 +30 10 11.2 q Y66
2023-02-08 22:30:19 C 07 11 19.44 +30 10 11.0 q Y66
2023-02-08 22:32:05 C 07 11 19.45 +30 10 10.7 q Y66
2023-02-09 02:37:06 C 07 11 22.222 +30 09 30.89 V V39
2023-02-09 02:41:37 C 07 11 22.256 +30 09 30.20 V V39
2023-02-09 02:46:09 C 07 11 22.276 +30 09 29.57 V V39
2023-02-09 02:50:42 C 07 11 22.307 +30 09 28.90 V V39
2023-02-09 06:10:16 C 07 11 23.478 +30 08 58.34 V V00
2023-02-09 06:17:26 C 07 11 23.514 +30 08 57.12 V V00
2023-02-09 06:24:35 C 07 11 23.557 +30 08 56.00 V V00
2023-02-09 06:31:44 C 07 11 23.593 +30 08 54.85 V V00
2023-02-09 18:51:23 C 07 11 32.100 +30 06 53.10 q 246
2023-02-09 18:51:42 C 07 11 32.090 +30 06 53.10 q 246
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)