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
2022-06-09 14:16:23 C 21 29 26.471 -18 30 52.14 U F52
2022-06-13 09:06:43 C 21 35 32.402 -18 23 08.59 V G96
2022-06-13 09:15:02 C 21 35 32.964 -18 23 07.51 V G96
2022-06-13 09:23:20 C 21 35 33.533 -18 23 06.58 V G96
2022-06-13 09:31:40 C 21 35 34.012 -18 23 06.58 V G96
2022-06-22 09:56:39 C 21 49 48.300 -18 11 47.69 U I41
2022-06-22 10:32:01 C 21 49 50.479 -18 11 46.79 U I41
2022-06-25 04:13:20 C 21 54 04.275 -18 10 32.91 X K91
2022-06-25 04:14:57 C 21 54 04.370 -18 10 33.07 X K91
2022-06-25 04:16:33 C 21 54 04.462 -18 10 33.02 X K91
2022-06-25 04:18:09 C 21 54 04.572 -18 10 32.94 X K91
2022-06-25 04:19:45 C 21 54 04.672 -18 10 32.82 X K91
2022-06-25 04:21:21 C 21 54 04.762 -18 10 32.80 X K91
2022-06-25 04:22:59 C 21 54 04.869 -18 10 32.80 X K91
2022-06-25 15:49:27 C 21 54 49.759 -18 10 30.72 X Q63
2022-06-25 15:51:05 C 21 54 49.857 -18 10 30.72 X Q63
2022-06-25 15:52:42 C 21 54 49.955 -18 10 30.76 X Q63
2022-06-25 15:54:18 C 21 54 50.056 -18 10 30.80 X Q63
2022-06-25 15:55:54 C 21 54 50.152 -18 10 30.79 X Q63
2022-06-25 15:57:31 C 21 54 50.247 -18 10 30.74 X Q63
2022-06-25 15:59:08 C 21 54 50.347 -18 10 30.81 X Q63
2022-06-25 19:19:28 C 21 55 02.486 -18 10 30.63 X Q63
2022-06-25 19:21:05 C 21 55 02.584 -18 10 30.66 X Q63
2022-06-25 19:22:41 C 21 55 02.685 -18 10 30.53 X Q63
2022-06-25 19:24:18 C 21 55 02.784 -18 10 30.57 X Q63
2022-06-25 19:25:56 C 21 55 02.881 -18 10 30.57 X Q63
2022-06-26 00:15:02 C 21 55 22.185 -18 10 30.24 X K91
2022-06-26 00:16:40 C 21 55 22.292 -18 10 30.32 X K91
2022-06-26 00:18:16 C 21 55 22.381 -18 10 30.27 X K91
2022-06-26 00:19:52 C 21 55 22.486 -18 10 30.28 X K91
2022-06-26 00:21:28 C 21 55 22.586 -18 10 30.31 X K91
2022-06-26 00:23:04 C 21 55 22.675 -18 10 30.29 X K91
2022-06-26 00:24:42 C 21 55 22.774 -18 10 30.27 X K91
2022-06-26 05:14:58 C 21 55 41.581 -18 10 30.54 X W87
2022-06-26 05:16:34 C 21 55 41.734 -18 10 30.49 X W87
2022-06-26 05:19:47 C 21 55 41.906 -18 10 30.70 X W87
2022-06-26 05:21:23 C 21 55 42.021 -18 10 30.75 X W87
2022-06-27 01:38:21 C 21 56 59.342 -18 10 38.25 X K91
2022-06-27 01:39:57 C 21 56 59.431 -18 10 38.24 X K91
2022-06-27 01:41:34 C 21 56 59.528 -18 10 38.21 X K91
2022-06-27 01:43:10 C 21 56 59.626 -18 10 38.31 X K91
2022-06-27 01:44:47 C 21 56 59.720 -18 10 38.35 X K91
2022-06-27 01:46:24 C 21 56 59.821 -18 10 38.28 X K91
2022-06-27 01:48:01 C 21 56 59.925 -18 10 38.34 X K91
2022-06-29 23:31:25 C 22 01 26.27 -18 12 05.1 V M28
2022-06-29 23:33:31 C 22 01 26.41 -18 12 05.3 V M28
2022-06-30 00:09:12 C 22 01 28.55 -18 12 06.6 V M28
2022-06-30 00:17:36 C 22 01 29.05 -18 12 07.1 V M28
2022-06-30 00:19:42 C 22 01 29.18 -18 12 07.1 V M28
2022-06-30 00:26:01 C 22 01 29.55 -18 12 07.4 V M28
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)