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
2022-11-23 13:38:58 C 08 22 12.336 +17 34 48.14 V T05
2022-11-24 08:40:55 C 08 22 32.520 +17 54 10.44 V 703
2022-11-24 08:48:28 C 08 22 32.552 +17 54 18.76 V 703
2022-11-24 08:56:02 C 08 22 32.588 +17 54 26.71 V 703
2022-11-24 09:03:37 C 08 22 32.581 +17 54 35.64 V 703
2022-11-24 10:09:23 C 08 22 32.66 +17 55 44.6 U V16
2022-11-24 10:17:43 C 08 22 32.72 +17 55 53.4 U V16
2022-11-24 10:26:03 C 08 22 32.71 +17 56 01.8 U V16
2022-11-24 10:34:22 C 08 22 32.71 +17 56 10.5 U V16
2022-11-24 10:42:42 C 08 22 32.70 +17 56 19.4 U V16
2022-11-24 10:51:02 C 08 22 32.73 +17 56 27.8 U V16
2022-11-24 10:59:20 C 08 22 32.74 +17 56 36.4 U V16
2022-11-24 11:07:41 C 08 22 32.75 +17 56 45.0 U V16
2022-11-24 15:40:24 C 08 22 35.277 +18 01 34.65 V T12
2022-11-24 15:40:55 C 08 22 35.277 +18 01 35.17 V T12
2022-11-24 15:41:29 C 08 22 35.276 +18 01 35.72 V T12
2022-11-24 15:42:10 C 08 22 35.275 +18 01 36.41 V T12
2022-11-24 15:42:41 C 08 22 35.276 +18 01 36.95 V T12
2022-11-24 15:43:22 C 08 22 35.274 +18 01 37.62 V T12
2022-11-24 15:43:50 C 08 22 35.272 +18 01 38.10 V T12
2022-11-24 15:44:28 C 08 22 35.272 +18 01 38.70 V T12
2022-11-24 15:45:02 C 08 22 35.272 +18 01 39.28 V T12
2022-11-24 17:06:01 C 08 22 39.30 +18 02 47.0 V P87
2022-11-24 17:19:23 C 08 22 39.32 +18 03 01.3 V P87
2022-11-24 17:32:53 C 08 22 39.34 +18 03 15.4 V P87
2022-11-24 22:21:27 C 08 22 44.071 +18 07 48.13 X B72
2022-11-24 22:34:26 C 08 22 44.200 +18 08 01.80 X B72
2022-11-24 22:47:25 C 08 22 44.322 +18 08 15.60 X B72
2022-11-24 23:00:25 C 08 22 44.442 +18 08 29.44 X B72
2022-11-24 23:13:24 C 08 22 44.559 +18 08 43.26 X B72
2022-11-24 23:26:24 C 08 22 44.654 +18 08 56.99 X B72
2022-11-24 23:39:23 C 08 22 44.748 +18 09 10.84 X B72
2022-11-24 23:52:22 C 08 22 44.845 +18 09 24.42 X B72
2022-11-25 00:05:22 C 08 22 44.902 +18 09 38.30 X B72
2022-11-25 00:18:21 C 08 22 44.991 +18 09 52.00 X B72
2022-11-25 23:49:11 C 08 22 59.98 +18 33 36.5 V C23
2022-11-26 00:03:10 C 08 23 00.79 +18 33 59.3 Z Z55
2022-11-26 00:03:44 C 08 23 00.03 +18 33 51.6 V C23
2022-11-26 00:05:17 C 08 23 00.80 +18 34 01.5 Z Z55
2022-11-26 00:07:23 C 08 23 00.81 +18 34 03.6 Z Z55
2022-11-26 00:09:29 C 08 23 00.82 +18 34 05.9 Z Z55
2022-11-26 00:11:36 C 08 23 00.81 +18 34 08.1 Z Z55
2022-11-26 00:13:42 C 08 23 00.83 +18 34 10.4 Z Z55
2022-11-26 00:54:50 C 08 23 00.10 +18 34 44.6 V C23
2022-11-26 02:29:53 C 08 23 00.310 +18 36 30.10 Z 213
2022-11-26 03:51:16 C 08 22 59.974 +18 37 52.50 Z 213
2022-11-26 05:21:06 C 08 22 59.580 +18 39 22.03 Z 213
2022-11-26 15:15:43 C 08 23 03.994 +18 49 35.44 V T05
2022-11-26 15:35:21 C 08 23 03.818 +18 49 54.70 V T05
2022-11-26 15:39:35 C 08 23 03.780 +18 49 58.80 V T05
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)