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
2012-04-21 10:25:54 C 13 01 49.251 +13 39 00.92 L F51
2012-04-21 10:46:35 C 13 01 52.176 +13 38 56.89 L F51
2012-04-21 11:07:27 C 13 01 55.146 +13 38 52.71 L F51
2012-04-21 11:28:20 C 13 01 58.145 +13 38 48.45 L F51
2012-04-22 00:00:10 C 13 04 08.00 +13 35 43.4 u J95
2012-04-22 00:12:32 C 13 04 09.96 +13 35 40.4 u J95
2012-04-22 00:23:51 C 13 04 11.73 +13 35 38.7 u J95
2012-04-22 05:05:05 C 13 05 03.31 +13 34 55.2 u H36
2012-04-22 05:18:00 C 13 05 05.40 +13 34 50.6 u H36
2012-04-22 06:10:15 C 13 05 14.59 +13 34 46.8 o H01
2012-04-22 06:16:04 C 13 05 15.51 +13 34 45.5 o H01
2012-04-22 06:24:58 C 13 05 18.17 +13 34 37.2 t G58
2012-04-22 06:29:51 C 13 05 17.69 +13 34 42.1 o H01
2012-04-22 06:32:31 C 13 05 19.41 +13 34 35.3 t G58
2012-04-22 06:44:33 C 13 05 20.02 +13 34 38.6 o H01
2012-04-22 06:48:20 C 13 05 21.91 +13 34 32.0 t G58
2012-04-23 05:47:18 C 13 09 43.26 +13 28 15.6 u H21
2012-04-23 05:52:40 C 13 09 44.25 +13 28 13.7 u H21
2012-04-23 05:57:42 C 13 09 45.16 +13 28 12.3 u H21
2012-04-24 04:24:42 C 13 14 35.92 +13 20 22.0 o 291
2012-04-24 04:25:53 C 13 14 36.18 +13 20 21.4 o 291
2012-04-24 04:27:03 C 13 14 36.46 +13 20 21.4 o 291
2012-04-24 05:38:40 C 13 14 49.28 +13 19 44.1 o H36
2012-04-24 05:52:24 C 13 14 52.11 +13 19 38.1 o H36
2012-04-24 05:58:59 C 13 14 53.41 +13 19 34.9 o H36
2012-04-24 06:11:01 C 13 14 55.18 +13 19 28.2 u H21
2012-04-24 06:17:34 C 13 14 56.53 +13 19 25.5 u H21
2012-04-24 06:24:08 C 13 14 57.86 +13 19 22.6 u H21
2012-04-25 05:13:40 C 13 20 27.93 +13 08 45.3 u H21
2012-04-25 05:18:45 C 13 20 29.08 +13 08 42.7 u H21
2012-04-25 05:24:22 C 13 20 30.39 +13 08 39.4 u H21
2012-04-25 08:03:01 C 13 21 09.21 +13 07 26.8 o 291
2012-04-25 08:05:13 C 13 21 09.72 +13 07 25.6 o 291
2012-04-25 08:07:23 C 13 21 10.23 +13 07 24.3 o 291
2012-04-26 20:26:17 C 13 31 32.16 +12 43 29.7 u A13
2012-04-26 20:30:00 C 13 31 33.26 +12 43 26.2 u A13
2012-04-26 20:57:18 C 13 31 41.14 +12 43 07.4 u A13
2012-04-26 21:01:02 C 13 31 42.25 +12 43 04.2 u A13
2012-04-27 07:45:12 C 13 35 04.26 +12 34 52.0 o 291
2012-04-27 07:46:24 C 13 35 04.59 +12 34 51.2 o 291
2012-04-27 07:47:34 C 13 35 04.95 +12 34 49.8 o 291
2012-04-27 07:55:24 C 13 35 07.30 +12 34 43.3 o 695
2012-04-27 07:56:28 C 13 35 07.63 +12 34 42.0 o 695
2012-04-27 07:57:32 C 13 35 07.95 +12 34 41.4 o 695
2012-05-01 05:05:48 C 14 15 25.80 +10 30 45.2 o 291
2012-05-01 05:07:08 C 14 15 26.51 +10 30 42.7 o 291
2012-05-01 05:08:26 C 14 15 27.19 +10 30 40.1 o 291
2012-05-01 22:35:40 C 14 25 37.72 +09 53 04.6 t J84
2012-05-01 22:55:13 C 14 25 49.16 +09 52 20.3 t J84
2012-05-02 05:25:46 C 14 29 53.40 +09 37 31.0 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)