2012 HM8

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6261880665 ± 5.22e-06
Semi-major axis (a)2.9324952196 AU ± 2.22e-05
Inclination (i)1.81338754° ± 4.36e-05
Long. of Asc. Node (Ω)62.92204324° ± 5.65e-04
Arg. of Perihelion (ω)181.32318949° ± 4.49e-04
Mean Anomaly (M)264.36739290° ± 2.89e-03
Mean Motion (n)0.1962710776°/day ± 2.23e-06
Perihelion dist (q)1.09620171 AU ± 1.74e-05
Aphelion dist (Q)4.76878873 AU ± 3.93e-05
Orbital Period5.02176019 yr ± 5.71e-05
Physical Parameters
H (abs. magnitude)24.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.431″
Uncertainty1
Orbit TypeAmor
MOID0.082295 AU
Observations Used95
Radar Obs Used2
Oppositions1
Arc Total2012-2012
First Observation Used2012-04-21
Last Observation Used2012-05-10
Observations (95)
Date Type RA Dec Mag Band Observatory
2012-05-02 05:31:05 C 14 29 56.60 +09 37 18.1 o H21
2012-05-02 05:36:13 C 14 29 59.70 +09 37 05.6 o H21
2012-05-02 05:41:53 C 14 30 03.11 +09 36 52.0 o H21
2012-05-02 05:54:27 C 14 30 14.54 +09 36 40.2 o 291
2012-05-02 05:55:42 C 14 30 15.35 +09 36 37.4 o 291
2012-05-02 05:56:55 C 14 30 16.10 +09 36 33.6 o 291
2012-05-02 19:26:12 C 14 39 18.61 +09 01 14.2 u C73
2012-05-02 19:26:52 C 14 39 19.04 +09 01 12.5 u C73
2012-05-02 19:27:31 C 14 39 19.42 +09 01 10.0 u C73
2012-05-02 19:28:11 C 14 39 19.93 +09 01 09.2 u C73
2012-05-02 19:28:50 C 14 39 20.39 +09 01 07.5 u C73
2012-05-02 19:29:29 C 14 39 20.81 +09 01 06.0 u C73
2012-05-02 19:30:09 C 14 39 21.25 +09 01 03.6 u C73
2012-05-02 19:30:49 C 14 39 21.70 +09 01 02.1 u C73
2012-05-02 19:31:28 C 14 39 22.11 +09 01 00.2 u C73
2012-05-02 19:32:07 C 14 39 22.56 +09 00 58.4 u C73
2012-05-02 19:32:47 C 14 39 22.98 +09 00 57.0 u C73
2012-05-02 19:33:26 C 14 39 23.42 +09 00 55.3 u C73
2012-05-02 19:34:06 C 14 39 23.86 +09 00 53.8 u C73
2012-05-02 19:34:45 C 14 39 24.29 +09 00 52.1 u C73
2012-05-02 19:35:24 C 14 39 24.71 +09 00 50.2 u C73
2012-05-02 19:36:04 C 14 39 25.14 +09 00 48.7 u C73
2012-05-02 19:36:44 C 14 39 25.59 +09 00 47.1 u C73
2012-05-02 22:06:25 C 14 41 08.08 +08 53 56.8 t 204
2012-05-02 22:14:26 C 14 41 13.47 +08 53 34.4 t 204
2012-05-02 22:21:49 C 14 41 18.42 +08 53 14.2 t 204
2012-05-02 23:09:23 C 14 41 50.38 +08 51 02.5 u 203
2012-05-02 23:45:12 C 14 42 14.54 +08 49 21.8 c A24
2012-05-02 23:47:26 C 14 42 16.10 +08 49 14.9 c A24
2012-05-02 23:57:57 C 14 42 23.10 +08 48 45.3 u 203
2012-05-03 00:08:14 C 14 42 30.13 +08 48 16.0 c A24
2012-05-03 00:50:23 C 14 42 58.85 +08 46 16.0 c A24
2012-05-03 00:52:36 C 14 43 00.35 +08 46 09.3 c A24
2012-05-03 07:55:42 C 14 48 07.99 +08 25 41.8 u H21
2012-05-03 08:05:25 C 14 48 14.90 +08 25 12.0 u H21
2012-05-03 08:14:56 C 14 48 21.67 +08 24 42.8 u H21
2012-05-04 22:36:40 C 15 20 28.53 +06 08 38.7 w 213
2012-05-04 22:46:50 C 15 20 37.49 +06 07 57.2 w 213
2012-05-04 22:58:01 C 15 20 47.31 +06 07 10.6 w 213
2012-05-08 08:36:48 C 16 50 56.06 -01 01 13.1 u H21
2012-05-08 08:50:32 C 16 51 12.59 -01 02 37.2 u H21
2012-05-08 08:57:16 C 16 51 20.70 -01 03 18.1 u H21
2012-05-10 08:06:01 C 17 51 43.16 -05 53 18.2 o H21
2012-05-10 08:11:28 C 17 51 49.80 -05 53 50.7 o H21
2012-05-10 08:19:11 C 17 51 59.21 -05 54 36.4 o H21
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-04-30 04:06:00 115730.6458 1 Hz 2380 -1 -1
2012-04-30 04:29:00 60315193.59 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)