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
2022-08-26 07:44:20 C 23 42 36.907 -27 50 36.64 V W68
2022-08-27 04:28:57 C 23 45 17.767 -28 09 40.54 V W68
2022-08-27 04:31:33 C 23 45 18.077 -28 09 43.02 V W68
2022-08-27 04:37:31 C 23 45 18.761 -28 09 48.78 V W68
2022-08-27 04:47:28 C 23 45 19.910 -28 09 58.32 V W68
2022-08-27 22:00:42 C 23 47 36.161 -28 25 56.17 V M22
2022-08-27 22:05:17 C 23 47 36.715 -28 26 00.67 V M22
2022-08-27 22:28:45 C 23 47 39.526 -28 26 23.57 V M22
2022-08-27 22:30:03 C 23 47 39.684 -28 26 24.90 V M22
2022-08-27 22:31:21 C 23 47 39.838 -28 26 26.05 V M22
2022-08-27 22:40:59 C 23 47 40.994 -28 26 35.48 V M22
2022-08-27 22:41:38 C 23 47 41.066 -28 26 36.06 V M22
2022-08-27 22:49:29 C 23 47 42.002 -28 26 43.55 V M22
2022-08-28 13:05:07 C 23 49 38.62 -28 40 03.2 q E23
2022-08-28 13:15:09 C 23 49 39.86 -28 40 13.2 q E23
2022-08-28 13:25:07 C 23 49 41.11 -28 40 23.1 q E23
2022-08-28 13:35:07 C 23 49 42.35 -28 40 33.0 q E23
2022-08-28 13:45:08 C 23 49 43.58 -28 40 42.8 q E23
2022-08-28 13:55:07 C 23 49 44.82 -28 40 52.6 q E23
2022-08-28 14:05:08 C 23 49 46.04 -28 41 02.3 q E23
2022-08-28 14:15:07 C 23 49 47.27 -28 41 12.0 q E23
2022-08-28 14:25:08 C 23 49 48.49 -28 41 21.8 q E23
2022-08-28 14:35:07 C 23 49 49.72 -28 41 31.4 q E23
2022-08-28 23:16:53 C 23 51 01.79 -28 50 43.6 V L54
2022-08-28 23:39:28 C 23 51 04.65 -28 51 05.4 V L54
2022-08-29 00:00:53 C 23 51 07.34 -28 51 25.3 V L54
2022-08-29 19:17:11 C 23 53 53.36 -29 09 43.3 Y 190
2022-08-29 19:17:24 C 23 53 53.43 -29 09 44.4 Y 190
2022-08-29 19:18:17 C 23 53 53.49 -29 09 45.7 Y 190
2022-08-29 19:18:31 C 23 53 53.48 -29 09 46.0 Y 190
2022-08-29 19:19:00 C 23 53 53.59 -29 09 45.2 Y 190
2022-08-29 19:19:24 C 23 53 53.69 -29 09 46.0 Y 190
2022-08-29 19:19:47 C 23 53 53.72 -29 09 47.0 Y 190
2022-08-29 19:20:10 C 23 53 53.78 -29 09 46.7 Y 190
2022-08-29 19:20:34 C 23 53 53.82 -29 09 46.9 Y 190
2022-08-29 19:20:57 C 23 53 53.87 -29 09 47.1 Y 190
2022-08-29 19:21:20 C 23 53 53.87 -29 09 48.6 Y 190
2022-08-29 19:21:44 C 23 53 53.97 -29 09 48.6 Y 190
2022-08-29 19:22:06 C 23 53 54.02 -29 09 49.1 Y 190
2022-08-29 19:22:29 C 23 53 54.12 -29 09 49.2 Y 190
2022-08-29 19:23:42 C 23 53 54.26 -29 09 49.5 Y 190
2022-08-29 19:24:16 C 23 53 54.28 -29 09 50.4 Y 190
2022-08-29 19:24:49 C 23 53 54.39 -29 09 51.1 Y 190
2022-08-29 19:25:22 C 23 53 54.47 -29 09 51.6 Y 190
2022-08-29 19:25:56 C 23 53 54.55 -29 09 52.5 Y 190
2022-08-29 19:26:29 C 23 53 54.58 -29 09 53.0 Y 190
2022-08-29 19:27:02 C 23 53 54.69 -29 09 53.2 Y 190
2022-08-29 19:27:36 C 23 53 54.73 -29 09 53.0 Y 190
2022-08-29 19:28:10 C 23 53 54.84 -29 09 54.0 Y 190
2022-08-29 19:30:57 C 23 53 55.26 -29 09 57.5 Y 190
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)