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
2012-02-18 08:22:12 C 10 55 21.93 -10 33 12.1 r 703
2012-02-18 08:31:58 C 10 55 22.26 -10 33 08.3 r 703
2012-02-18 08:41:46 C 10 55 22.51 -10 33 02.5 r 703
2012-02-18 08:51:36 C 10 55 22.76 -10 32 59.2 r 703
2012-02-18 14:49:46 C 10 55 34.47 -10 30 10.7 o 300
2012-02-18 14:59:47 C 10 55 34.73 -10 30 05.7 o 300
2012-02-18 15:03:08 C 10 55 34.78 -10 30 03.7 o 300
2012-02-19 01:36:22 C 10 55 53.92 -10 24 57.1 u J95
2012-02-19 01:45:35 C 10 55 54.17 -10 24 52.9 u J95
2012-02-19 01:54:51 C 10 55 54.38 -10 24 48.1 u J95
2012-02-19 06:47:32 C 10 56 04.49 -10 22 12.3 o H01
2012-02-19 06:57:25 C 10 56 04.74 -10 22 07.2 o H01
2012-02-19 07:11:53 C 10 56 05.10 -10 21 59.8 o H01
2012-02-19 07:25:30 C 10 56 05.44 -10 21 52.8 o H01
2012-02-19 07:50:36 C 10 56 05.56 -10 21 41.2 t H21
2012-02-19 07:55:40 C 10 56 05.68 -10 21 38.3 t H21
2012-02-19 08:00:43 C 10 56 05.81 -10 21 36.1 t H21
2012-02-19 08:05:46 C 10 56 05.92 -10 21 33.5 t H21
2012-02-19 14:45:49 C 10 56 19.29 -10 17 28.8 o E10
2012-02-19 14:51:54 C 10 56 19.44 -10 17 25.3 o E10
2012-02-19 14:53:55 C 10 56 19.49 -10 17 24.3 o E10
2012-02-19 14:55:57 C 10 56 19.54 -10 17 23.2 o E10
2012-02-19 14:57:59 C 10 56 19.58 -10 17 22.0 o E10
2012-02-20 05:18:07 C 10 56 47.55 -10 09 16.1 o I47
2012-02-20 05:32:54 C 10 56 47.93 -10 09 07.5 o I47
2012-02-20 05:48:27 C 10 56 48.33 -10 08 58.4 o I47
2012-02-20 07:34:05 C 10 56 51.55 -10 08 31.0 r H21
2012-02-20 07:39:41 C 10 56 51.70 -10 08 27.8 r H21
2012-02-20 07:45:31 C 10 56 51.84 -10 08 24.3 r H21
2012-02-20 07:49:20 C 10 56 51.94 -10 08 22.0 r H21
2012-02-20 22:23:57 C 10 57 21.33 -09 59 28.4 v B18
2012-02-20 22:29:00 C 10 57 21.50 -09 59 24.9 v B18
2012-02-20 22:32:01 C 10 57 21.55 -09 59 23.0 v B18
2012-02-21 13:49:40 C 10 57 52.99 -09 48 37.7 o 474
2012-02-21 13:52:39 C 10 57 53.08 -09 48 35.6 o 474
2012-02-21 13:55:39 C 10 57 53.17 -09 48 33.6 o 474
2012-02-21 22:39:42 C 10 58 12.14 -09 43 11.4 t B28
2012-02-21 22:42:23 C 10 58 12.20 -09 43 08.9 t B28
2012-02-22 03:32:37 C 10 58 22.95 -09 39 02.4 o 807
2012-02-22 03:36:31 C 10 58 23.06 -09 38 59.6 o 807
2012-02-22 07:37:00 C 10 58 30.35 -09 36 38.1 t H21
2012-02-22 07:48:53 C 10 58 30.70 -09 36 29.1 t H21
2012-02-22 07:59:44 C 10 58 31.02 -09 36 20.7 t H21
2012-02-22 09:09:05 C 10 58 32.54 -09 34 52.5 o 807
2012-02-22 09:14:54 C 10 58 32.71 -09 34 48.0 o 807
2012-02-22 09:22:27 C 10 58 32.96 -09 34 42.3 o 807
2012-02-22 09:30:54 C 10 58 33.22 -09 34 35.8 o 807
2012-02-22 09:36:58 C 10 58 33.41 -09 34 31.2 o 807
2012-02-23 00:01:19 C 10 59 06.78 -09 24 00.7 t 204
2012-02-23 00:13:23 C 10 59 07.14 -09 23 50.9 t 204
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)