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
2012-03-15 22:07:43 C 12 07 43.41 +23 13 27.8 o 046
2012-03-15 22:08:41 C 12 07 43.84 +23 13 39.1 o 046
2012-03-15 22:08:52 C 12 07 44.33 +23 13 37.9 u A74
2012-03-15 22:09:26 C 12 07 44.16 +23 13 47.7 o 046
2012-03-15 22:11:40 C 12 07 45.14 +23 14 13.7 o 046
2012-03-15 22:12:26 C 12 07 45.48 +23 14 22.7 o 046
2012-03-15 22:17:07 C 12 07 47.94 +23 15 13.7 u A74
2012-03-16 02:03:57 C 12 09 27.77 +23 59 23.0 u C47
2012-03-16 02:06:11 C 12 09 28.77 +23 59 49.1 u C47
2012-03-16 02:09:27 C 12 09 30.27 +24 00 27.5 u C47
2012-03-16 02:11:47 C 12 09 31.32 +24 00 54.8 u C47
2012-03-16 02:13:25 C 12 09 32.09 +24 01 14.0 u C47
2012-03-16 02:16:13 C 12 09 33.34 +24 01 46.9 u C47
2012-03-16 06:31:28 C 12 11 42.41 +24 53 14.9 16.6 c 704
2012-03-16 06:47:23 C 12 11 49.77 +24 56 28.6 16.6 c 704
2012-03-16 07:03:19 C 12 11 57.22 +24 59 42.4 16.6 c 704
2012-03-16 07:19:11 C 12 12 04.62 +25 02 55.2 16.7 c 704
2012-03-16 07:35:03 C 12 12 11.98 +25 06 08.1 16.7 c 704
2012-03-16 21:03:09 C 12 19 24.15 +27 55 10.3 u A27
2012-03-16 21:05:11 C 12 19 25.35 +27 55 38.8 u A27
2012-03-16 21:11:43 C 12 19 28.87 +27 57 05.3 u A27
2012-03-16 21:16:12 C 12 19 31.40 +27 58 04.4 u A27
2012-03-16 21:58:48 C 12 19 54.53 +28 07 32.1 o 046
2012-03-16 21:59:36 C 12 19 54.96 +28 07 42.7 o 046
2012-03-16 22:00:22 C 12 19 55.38 +28 07 52.8 o 046
2012-03-16 22:01:05 C 12 19 55.77 +28 08 02.2 o 046
2012-03-16 22:02:29 C 12 19 56.52 +28 08 20.7 o 046
2012-03-17 00:16:00 C 12 21 10.42 +28 37 54.1 u 160
2012-03-17 00:19:58 C 12 21 12.61 +28 38 46.6 u 160
2012-03-17 00:23:56 C 12 21 14.81 +28 39 39.2 u 160
2012-03-17 03:37:49 C 12 23 17.76 +29 22 43.0 o G48
2012-03-17 03:40:03 C 12 23 19.05 +29 23 13.2 o G48
2012-03-17 03:40:26 C 12 23 19.27 +29 23 18.3 o G48
2012-03-17 03:41:10 C 12 23 19.69 +29 23 27.8 o G48
2012-03-17 22:10:44 C 12 35 29.43 +33 42 47.4 o A98
2012-03-17 22:11:20 C 12 35 29.81 +33 42 56.0 o A98
2012-03-17 22:26:55 C 12 35 44.22 +33 46 33.2 o J16
2012-03-17 22:27:52 C 12 35 41.48 +33 46 56.9 o A98
2012-03-17 22:28:49 C 12 35 42.13 +33 47 10.5 o A98
2012-03-17 22:29:06 C 12 35 45.79 +33 47 05.1 o J16
2012-03-17 22:31:28 C 12 35 47.49 +33 47 40.4 o J16
2012-03-17 22:33:45 C 12 35 49.11 +33 48 13.7 o J16
2012-03-17 22:35:59 C 12 35 50.66 +33 48 46.0 o J16
2012-03-18 21:54:21 C 12 55 16.36 +39 41 49.3 t J69
2012-03-18 21:57:26 C 12 55 19.22 +39 42 38.4 t J69
2012-03-18 22:00:31 C 12 55 22.09 +39 43 27.0 t J69
2012-03-18 22:07:46 C 12 55 28.77 +39 45 21.4 t J69
2012-03-19 20:42:29 C 13 19 55.76 +45 41 55.2 u A27
2012-03-19 20:43:41 C 13 19 57.31 +45 42 16.3 u A27
2012-03-19 20:52:41 C 13 20 08.18 +45 44 39.9 u A27
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)