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
2012-02-23 00:25:43 C 10 59 07.54 -09 23 41.0 t 204
2012-02-23 04:58:58 C 10 59 19.16 -09 19 52.6 o G48
2012-02-23 05:01:31 C 10 59 19.23 -09 19 50.8 o G48
2012-02-23 05:09:10 C 10 59 19.45 -09 19 45.5 o G48
2012-02-23 08:26:44 C 10 59 25.47 -09 17 02.0 r 703
2012-02-23 08:37:13 C 10 59 25.80 -09 16 53.9 r 703
2012-02-23 08:47:43 C 10 59 26.16 -09 16 44.8 r 703
2012-02-23 08:58:20 C 10 59 26.48 -09 16 35.7 r 703
2012-02-24 12:01:10 C 11 00 29.869 -08 52 28.34 L F51
2012-02-24 12:19:06 C 11 00 30.428 -08 52 11.33 L F51
2012-02-24 12:36:17 C 11 00 30.967 -08 51 54.93 L F51
2012-02-24 12:52:49 C 11 00 31.492 -08 51 39.18 L F51
2012-02-24 23:20:14 C 11 00 58.40 -08 41 40.0 u 157
2012-02-24 23:25:28 C 11 00 58.61 -08 41 35.1 u 157
2012-02-24 23:30:45 C 11 00 58.78 -08 41 30.0 u 157
2012-02-28 05:33:06 C 11 04 36.85 -07 08 43.0 u H21
2012-02-28 05:36:29 C 11 04 37.00 -07 08 38.2 u H21
2012-02-28 05:39:52 C 11 04 37.14 -07 08 33.5 u H21
2012-02-28 05:43:16 C 11 04 37.29 -07 08 28.7 u H21
2012-02-28 05:47:05 C 11 04 37.45 -07 08 23.4 u H21
2012-03-01 07:00:30 C 11 07 25.57 -05 50 45.7 r 703
2012-03-01 07:10:20 C 11 07 26.07 -05 50 28.5 r 703
2012-03-01 07:20:20 C 11 07 26.61 -05 50 11.6 r 703
2012-03-01 07:30:06 C 11 07 27.12 -05 49 54.8 r 703
2012-03-04 06:49:53 C 11 12 33.21 -03 21 17.8 u 448
2012-03-04 06:55:00 C 11 12 33.57 -03 21 05.3 u 448
2012-03-04 07:00:07 C 11 12 33.93 -03 20 52.8 u 448
2012-03-04 07:05:13 C 11 12 34.28 -03 20 40.2 u 448
2012-03-04 07:10:20 C 11 12 34.64 -03 20 27.6 u 448
2012-03-04 08:08:26 C 11 12 39.47 -03 18 08.6 t G58
2012-03-04 08:22:28 C 11 12 40.45 -03 17 34.1 t G58
2012-03-04 08:32:40 C 11 12 41.19 -03 17 09.0 t G58
2012-03-04 09:08:11 C 11 12 42.30 -03 15 41.1 o H21
2012-03-04 09:13:58 C 11 12 42.73 -03 15 26.7 o H21
2012-03-04 09:27:36 C 11 12 43.75 -03 14 52.9 o H21
2012-03-09 15:29:30 C 11 27 09.05 +04 03 36.2 u D90
2012-03-09 15:37:12 C 11 27 10.11 +04 04 12.9 u D90
2012-03-09 15:45:04 C 11 27 11.21 +04 04 50.4 u D90
2012-03-09 20:31:24 C 11 27 59.07 +04 26 22.5 u C73
2012-03-09 20:33:23 C 11 27 59.36 +04 26 31.0 u C73
2012-03-09 20:35:21 C 11 27 59.68 +04 26 41.1 u C73
2012-03-09 20:37:20 C 11 27 59.92 +04 26 50.4 u C73
2012-03-09 20:39:19 C 11 28 00.26 +04 26 59.8 u C73
2012-03-09 20:41:17 C 11 28 00.47 +04 27 10.4 u C73
2012-03-09 20:43:16 C 11 28 00.82 +04 27 19.6 u C73
2012-03-09 20:45:15 C 11 28 01.07 +04 27 29.8 u C73
2012-03-10 00:40:47 C 11 28 37.11 +04 46 55.9 o B75
2012-03-10 00:41:57 C 11 28 37.23 +04 47 01.3 o B75
2012-03-10 00:42:46 C 11 28 37.38 +04 47 06.3 o B75
2012-03-10 00:44:17 C 11 28 37.63 +04 47 14.2 o B75
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)