2012 HW1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6613942101 ± 1.77e-07
Semi-major axis (a)1.0608222511 AU ± 1.84e-09
Inclination (i)49.57240706° ± 1.90e-05
Long. of Asc. Node (Ω)207.81030709° ± 4.23e-06
Arg. of Perihelion (ω)163.70405505° ± 6.26e-06
Mean Anomaly (M)65.63353683° ± 2.44e-05
Mean Motion (n)0.9020868359°/day ± 2.34e-09
Perihelion dist (q)0.35920056 AU ± 1.88e-07
Aphelion dist (Q)1.76244395 AU ± 1.88e-07
Orbital Period1.09260688 yr ± 2.84e-09
Physical Parameters
H (abs. magnitude)20.03
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.232″
Uncertainty0
Orbit TypeApollo
MOID0.396605 AU
Observations Used132
Oppositions1
Arc Total2012-2025
First Observation Used2012-04-17
Last Observation Used2025-05-01
Observations (154)
Date Type RA Dec Mag Band Observatory
2012-04-20 02:03:24 C 15 24 37.00 +08 09 45.0 u J95
2012-04-21 09:25:09 C 15 20 54.54 +10 06 06.4 t G58
2012-04-21 09:29:33 C 15 20 53.92 +10 06 23.3 t G58
2012-04-21 09:33:58 C 15 20 53.42 +10 06 39.6 t G58
2012-04-24 09:09:09 C 15 11 27.36 +14 44 38.8 u H21
2012-04-24 09:16:07 C 15 11 26.28 +14 45 07.3 u H21
2012-04-24 09:18:09 C 15 11 25.96 +14 45 15.4 u H21
2012-05-03 06:05:57 C 14 35 08.43 +29 15 21.5 o H21
2012-05-03 06:13:26 C 14 35 06.88 +29 15 51.4 o H21
2012-05-03 06:20:33 C 14 35 05.44 +29 16 20.1 o H21
2012-05-03 06:26:23 C 14 35 04.24 +29 16 43.6 o H21
2012-05-08 07:10:03 C 14 09 02.67 +36 56 08.2 u H21
2012-05-08 07:26:11 C 14 08 58.85 +36 57 05.1 u H21
2012-05-08 07:34:15 C 14 08 56.91 +36 57 33.6 u H21
2012-05-11 07:57:16 C 13 51 44.24 +41 01 09.8 u H21
2012-05-11 08:07:21 C 13 51 41.71 +41 01 41.3 u H21
2012-05-11 08:17:52 C 13 51 39.13 +41 02 14.2 u H21
2012-05-15 05:00:10 C 13 28 19.44 +45 31 05.9 t H21
2012-05-15 05:08:59 C 13 28 17.12 +45 31 28.8 t H21
2012-05-15 05:17:21 C 13 28 14.89 +45 31 50.8 t H21
2012-05-23 04:13:37 C 12 38 19.11 +52 10 40.3 u H21
2012-05-23 04:20:40 C 12 38 17.28 +52 10 51.3 u H21
2012-05-23 04:27:41 C 12 38 15.47 +52 11 02.4 u H21
2012-06-16 04:27:04 C 10 25 08.92 +58 58 16.5 o 291
2012-06-16 04:31:17 C 10 25 08.13 +58 58 17.5 o 291
2012-06-16 04:35:30 C 10 25 07.07 +58 58 17.3 o 291
2013-04-09 10:54:04 C 14 05 54.789 -18 10 36.88 L F51
2013-04-09 11:15:11 C 14 05 52.145 -18 09 57.96 L F51
2013-04-09 11:36:21 C 14 05 49.504 -18 09 19.01 L F51
2013-04-09 11:57:25 C 14 05 46.856 -18 08 39.92 L F51
2013-04-13 01:54:14 C 13 54 59.13 -15 21 22.5 c J04
2013-04-13 02:10:54 C 13 54 56.92 -15 20 48.4 c J04
2013-04-13 02:27:34 C 13 54 54.71 -15 20 14.0 c J04
2013-04-13 02:44:13 C 13 54 52.47 -15 19 40.1 c J04
2013-04-16 05:26:54 C 13 45 00.27 -12 41 01.4 L W84
2013-04-16 05:26:55 C 13 45 00.27 -12 41 01.4 L W84
2013-04-16 05:32:50 C 13 44 59.45 -12 40 48.4 L W84
2013-04-16 05:32:51 C 13 44 59.45 -12 40 48.4 L W84
2013-04-16 05:39:02 C 13 44 58.61 -12 40 35.0 L W84
2013-04-16 05:39:02 C 13 44 58.61 -12 40 35.0 L W84
2013-04-16 05:44:54 C 13 44 57.79 -12 40 21.9 L W84
2013-04-16 05:44:55 C 13 44 57.79 -12 40 21.9 L W84
2013-04-17 02:46:55 C 13 42 08.07 -11 53 52.6 L W84
2013-04-17 02:46:56 C 13 42 08.07 -11 53 52.7 L W84
2013-04-17 02:52:52 C 13 42 07.25 -11 53 39.4 L W84
2013-04-17 02:52:53 C 13 42 07.25 -11 53 39.4 L W84
2013-04-17 02:58:50 C 13 42 06.42 -11 53 26.1 L W84
2013-04-17 03:04:48 C 13 42 05.59 -11 53 12.9 L W84
2013-04-17 03:04:49 C 13 42 05.59 -11 53 12.9 L W84
2013-04-18 04:27:28 C 13 38 38.27 -10 56 10.9 L W84