2012 DH4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5766034502 ± 3.19e-08
Semi-major axis (a)2.0318688844 AU ± 5.22e-08
Inclination (i)14.46791222° ± 6.62e-06
Long. of Asc. Node (Ω)168.97603129° ± 2.76e-06
Arg. of Perihelion (ω)69.16910165° ± 9.55e-06
Mean Anomaly (M)246.79734422° ± 6.19e-05
Mean Motion (n)0.3403053342°/day ± 1.31e-08
Perihelion dist (q)0.86028628 AU ± 6.85e-08
Aphelion dist (Q)3.20345149 AU ± 1.05e-07
Orbital Period2.89629984 yr ± 1.12e-07
Physical Parameters
H (abs. magnitude)20.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.313″
Uncertainty0
Orbit TypeApollo
MOID0.064284 AU
Observations Used365
Radar Obs Used2
Oppositions1
Arc Total2012-2015
First Observation Used2012-02-18
Last Observation Used2015-10-07
Observations (369)
Date Type RA Dec Mag Band Observatory
2012-03-19 20:58:24 C 13 20 15.10 +45 46 11.8 u A27
2012-03-19 23:20:53 C 13 23 10.11 +46 24 29.1 u 160
2012-03-19 23:23:16 C 13 23 13.03 +46 25 06.8 u 160
2012-03-19 23:25:37 C 13 23 15.93 +46 25 44.6 u 160
2012-03-20 16:11:19 C 13 46 48.83 +50 46 22.1 o 300
2012-03-20 16:11:49 C 13 46 49.60 +50 46 29.6 o 300
2012-03-20 16:12:19 C 13 46 50.37 +50 46 37.4 o 300
2012-03-20 16:12:51 C 13 46 51.15 +50 46 45.2 o 300
2012-03-20 16:13:22 C 13 46 51.92 +50 46 53.1 o 300
2012-03-21 00:22:26 C 14 00 03.78 +52 47 19.5 u 089
2012-03-21 00:25:18 C 14 00 08.53 +52 48 01.2 u 089
2012-03-21 00:28:10 C 14 00 13.28 +52 48 42.4 u 089
2012-03-21 00:31:02 C 14 00 18.06 +52 49 23.9 u 089
2012-03-21 00:33:54 C 14 00 22.79 +52 50 05.5 u 089
2012-03-21 00:36:45 C 14 00 27.58 +52 50 46.6 u 089
2012-03-21 01:09:14 C 14 01 24.97 +52 58 33.3 u C47
2012-03-21 01:12:01 C 14 01 29.62 +52 59 13.5 u C47
2012-03-21 01:15:01 C 14 01 34.55 +52 59 56.2 u C47
2012-03-21 01:17:49 C 14 01 39.28 +53 00 35.5 u C47
2012-03-21 01:20:49 C 14 01 44.34 +53 01 19.9 u C47
2012-03-21 01:22:48 C 14 01 47.66 +53 01 48.4 u C47
2012-03-21 01:25:01 C 14 01 51.34 +53 02 19.9 u C47
2012-03-21 01:27:00 C 14 01 54.74 +53 02 48.9 u C47
2012-03-21 14:09:24 C 14 25 40.01 +55 57 46.5 u 379
2012-03-21 14:29:09 C 14 26 18.42 +56 02 08.5 u 379
2012-03-21 14:39:38 C 14 26 38.86 +56 04 27.6 u 379
2012-03-21 21:41:16 C 14 41 13.54 +57 30 53.2 t J69
2012-03-21 21:43:36 C 14 41 18.46 +57 31 22.4 t J69
2012-03-21 21:45:55 C 14 41 23.42 +57 31 50.3 t J69
2012-03-21 21:48:15 C 14 41 28.42 +57 32 19.8 t J69
2012-03-21 21:50:35 C 14 41 33.41 +57 32 47.9 t J69
2012-03-22 01:39:46 C 14 49 57.24 +58 17 06.4 u I15
2012-03-22 01:42:44 C 14 50 03.77 +58 17 41.1 u I15
2012-03-22 01:45:51 C 14 50 10.72 +58 18 17.5 u I15
2012-03-22 20:41:13 C 15 35 41.75 +61 20 21.4 u 510
2012-03-22 20:52:08 C 15 36 09.74 +61 21 50.4 u 510
2012-03-22 21:03:02 C 15 36 37.81 +61 23 18.7 u 510
2012-03-22 21:09:52 C 15 36 54.96 +61 24 15.3 u A27
2012-03-22 21:13:56 C 15 37 05.80 +61 24 46.4 u 510
2012-03-22 21:26:15 C 15 37 37.11 +61 26 27.4 u A27
2012-03-22 21:36:57 C 15 38 04.68 +61 27 52.6 u A27
2012-03-22 21:52:28 C 15 38 44.38 +61 29 55.2 u A27
2012-03-23 20:23:02 C 16 39 04.69 +63 26 26.5 u A27
2012-03-23 20:30:33 C 16 39 25.35 +63 26 49.0 u A27
2012-03-23 20:42:56 C 16 39 59.25 +63 27 28.1 u A27
2012-03-24 00:00:29 C 16 48 55.39 +63 36 18.0 t J69
2012-03-24 00:03:57 C 16 49 04.72 +63 36 26.0 t J69
2012-03-24 00:07:25 C 16 49 14.07 +63 36 34.3 t J69
2012-03-24 00:10:53 C 16 49 23.39 +63 36 42.7 t J69
2012-03-24 00:14:21 C 16 49 32.73 +63 36 50.9 t J69
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-03-11 05:46:00 214010.3 1 Hz 2380 -1 -1
2012-03-12 05:48:00 205352.8 0.2 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)