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
2013-04-18 04:33:29 C 13 38 37.42 -10 55 57.2 L W84
2013-04-18 04:39:30 C 13 38 36.58 -10 55 43.5 L W84
2013-04-18 04:45:30 C 13 38 35.74 -10 55 30.0 L W84
2013-04-21 06:11:53 C 13 28 30.93 -08 05 52.9 u G96
2013-04-21 06:19:35 C 13 28 29.82 -08 05 34.4 u G96
2013-04-21 06:27:27 C 13 28 28.70 -08 05 16.4 u G96
2013-04-21 06:35:13 C 13 28 27.62 -08 04 57.9 u G96
2013-04-22 09:37:09 C 13 24 44.100 -07 01 04.47 L F51
2013-04-22 09:53:34 C 13 24 41.774 -07 00 25.49 L F51
2013-04-22 10:10:04 C 13 24 39.453 -06 59 46.13 L F51
2023-03-29 11:55:57 C 17 18 04.648 -03 54 47.23 V V06
2023-03-29 12:00:00 C 17 18 04.918 -03 54 37.94 V V06
2023-03-30 11:57:23 C 17 19 50.600 -03 01 57.40 V V06
2023-03-30 12:00:46 C 17 19 50.790 -03 01 50.90 V V06
2023-03-30 12:04:09 C 17 19 51.040 -03 01 43.40 V V06
2023-05-03 10:36:38 C 18 58 29.053 +54 44 06.72 V G96
2023-05-03 10:44:06 C 18 58 31.084 +54 44 47.29 V G96
2023-05-03 10:51:34 C 18 58 33.046 +54 45 27.50 V G96
2024-04-09 10:15:36 C 15 23 59.665 -08 02 24.47 V V00
2024-04-09 10:23:41 C 15 23 58.992 -08 02 05.64 V V00
2024-04-09 10:31:45 C 15 23 58.326 -08 01 46.78 V V00
2024-04-09 10:39:54 C 15 23 57.649 -08 01 27.91 V V00
2024-04-16 13:42:52 C 15 07 29.845 -00 28 41.59 X F52
2024-04-16 13:58:58 C 15 07 27.953 -00 27 53.85 X F52
2024-04-16 14:15:01 C 15 07 26.064 -00 27 06.09 X F52
2024-04-17 03:04:52 B 15 05 57.590 +00 11 28.18 X L87
2024-04-17 03:13:40 B 15 05 56.477 +00 11 53.88 X L87
2024-04-17 03:22:27 B 15 05 55.426 +00 12 19.58 X L87
2024-04-18 11:38:05 C 15 02 04.722 +01 51 07.52 X F51
2024-04-18 11:50:32 C 15 02 03.128 +01 51 46.31 X F51
2024-04-18 12:02:57 C 15 02 01.538 +01 52 25.34 X F51
2024-04-18 12:15:25 C 15 01 59.959 +01 53 04.16 X F51
2024-05-02 08:27:07 C 14 10 03.338 +20 59 49.34 V G96
2024-05-02 08:34:36 C 14 10 01.938 +21 00 15.12 V G96
2024-05-02 08:42:04 C 14 10 00.480 +21 00 41.11 V G96
2024-05-02 08:49:33 C 14 09 59.072 +21 01 07.00 V G96
2024-05-28 04:09:12 C 12 11 18.697 +45 02 33.72 V G96
2024-05-28 04:17:19 C 12 11 17.315 +45 02 42.68 V G96
2024-05-28 04:25:26 C 12 11 15.878 +45 02 51.94 V G96
2024-05-28 04:33:31 C 12 11 14.543 +45 03 01.55 V G96
2025-04-02 11:05:09 C 14 09 09.389 -24 37 21.09 X F51
2025-04-02 11:21:56 C 14 09 07.549 -24 36 57.72 X F51
2025-04-02 11:55:31 C 14 09 03.757 -24 36 10.30 X F51
2025-04-21 05:08:16 C 13 12 39.064 -10 27 31.72 V G96
2025-04-21 05:16:17 C 13 12 37.994 -10 27 13.79 V G96
2025-04-21 05:24:18 C 13 12 36.918 -10 26 55.75 V G96
2025-04-21 05:32:20 C 13 12 35.827 -10 26 37.79 V G96
2025-04-28 06:51:35 C 12 50 56.526 -04 04 35.54 V G96
2025-04-28 06:58:58 C 12 50 55.568 -04 04 19.09 V G96
2025-04-28 07:06:19 C 12 50 54.676 -04 04 02.68 V G96