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
2022-12-05 02:26:59 C 08 21 07.848 +22 02 22.34 W M01
2022-12-05 02:28:01 C 08 21 07.799 +22 02 23.08 W M01
2022-12-05 02:29:41 C 08 21 07.737 +22 02 24.50 W M01
2022-12-05 02:32:11 C 08 21 07.643 +22 02 26.73 W M01
2022-12-05 02:34:41 C 08 21 07.549 +22 02 28.97 W M01
2022-12-05 02:37:08 C 08 21 07.477 +22 02 31.26 W M01
2022-12-05 02:39:38 C 08 21 07.391 +22 02 33.50 W M01
2022-12-05 02:42:08 C 08 21 07.305 +22 02 35.73 W M01
2022-12-05 03:00:18 C 08 21 06.623 +22 02 51.28 W M01
2022-12-05 03:00:37 C 08 21 06.633 +22 02 51.54 W M01
2022-12-05 05:20:07 C 08 21 03.629 +22 04 47.50 V Y90
2022-12-05 05:21:08 C 08 21 03.590 +22 04 48.32 V Y90
2022-12-05 05:22:11 C 08 21 03.540 +22 04 48.97 V Y90
2022-12-05 05:23:13 C 08 21 03.506 +22 04 50.20 V Y90
2022-12-05 05:24:13 C 08 21 03.468 +22 04 50.84 V Y90
2022-12-06 23:25:39 C 08 19 56.330 +22 42 05.90 V Z80
2022-12-06 23:31:23 C 08 19 56.189 +22 42 11.02 V Z80
2022-12-06 23:37:04 C 08 19 55.961 +22 42 16.52 V Z80
2022-12-06 23:42:45 C 08 19 55.747 +22 42 21.53 V Z80
2022-12-06 23:48:19 C 08 19 55.548 +22 42 26.89 V Z80
2022-12-07 03:59:09 C 08 19 45.40 +22 46 16.6 X C95
2022-12-07 04:12:14 C 08 19 44.86 +22 46 28.1 X C95
2022-12-07 04:24:26 C 08 19 44.36 +22 46 38.7 X C95
2022-12-07 21:01:29 C 08 19 15.455 +23 01 13.47 W M01
2022-12-07 21:55:28 C 08 19 13.179 +23 02 04.11 W M01
2022-12-07 22:39:59 C 08 19 11.41 +23 02 28.8 q G23
2022-12-07 22:48:49 C 08 19 10.870 +23 02 52.35 W M01
2022-12-07 22:48:49 C 08 19 10.862 +23 02 52.52 W M01
2022-12-07 22:54:19 C 08 19 10.81 +23 02 42.0 q G23
2022-12-09 22:30:23 C 08 17 25.618 +23 43 20.21 X B72
2022-12-09 22:32:00 C 08 17 25.562 +23 43 21.47 X B72
2022-12-09 22:32:32 C 08 17 25.531 +23 43 21.94 X B72
2022-12-09 22:33:37 C 08 17 25.493 +23 43 22.98 X B72
2022-12-09 22:34:43 C 08 17 25.430 +23 43 23.88 X B72
2022-12-09 22:35:48 C 08 17 25.385 +23 43 24.71 X B72
2022-12-13 21:02:38 C 08 13 06.36 +25 00 20.2 q G23
2022-12-13 21:21:04 C 08 13 05.33 +25 00 35.5 q G23
2022-12-13 21:42:03 C 08 13 04.16 +25 00 53.0 q G23
2022-12-14 21:56:03 C 08 11 47.65 +25 19 38.0 V C23
2022-12-14 22:01:26 C 08 11 47.32 +25 19 42.4 V C23
2022-12-14 22:07:55 C 08 11 46.94 +25 19 47.8 V C23
2022-12-15 10:01:43 C 08 11 06.09 +25 29 12.9 U V16
2022-12-15 10:10:07 C 08 11 05.54 +25 29 19.3 U V16
2022-12-15 10:18:32 C 08 11 04.97 +25 29 25.5 U V16
2022-12-15 10:26:55 C 08 11 04.42 +25 29 31.8 U V16
2022-12-15 10:35:18 C 08 11 03.85 +25 29 37.9 U V16
2022-12-15 10:43:41 C 08 11 03.30 +25 29 44.4 U V16
2022-12-15 10:52:06 C 08 11 02.74 +25 29 50.5 U V16
2022-12-15 11:00:28 C 08 11 02.17 +25 29 56.8 U V16
2022-12-15 11:08:18 C 08 11 01.65 +25 30 02.5 U V16
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)