2012 HG31

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5319673267 ± 7.98e-09
Semi-major axis (a)2.1732712986 AU ± 9.42e-09
Inclination (i)10.23798587° ± 1.67e-06
Long. of Asc. Node (Ω)148.27056709° ± 6.53e-06
Arg. of Perihelion (ω)173.10878193° ± 7.01e-06
Mean Anomaly (M)49.34952789° ± 9.93e-06
Mean Motion (n)0.3076389776°/day ± 2.00e-09
Perihelion dist (q)1.01716198 AU ± 1.79e-08
Aphelion dist (Q)3.32938062 AU ± 2.26e-08
Orbital Period3.20384072 yr ± 2.08e-08
Physical Parameters
H (abs. magnitude)18.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.266″
Uncertainty0
Orbit TypeAmor
MOID0.006038 AU
Observations Used510
Oppositions9
Arc Total2012-2025
First Observation Used2012-04-15
Last Observation Used2025-12-25
Observations (546)
Date Type RA Dec Mag Band Observatory
2012-10-16 08:53:56 C 01 30 07.33 -30 58 27.8 u 807
2012-10-16 09:06:00 C 01 30 07.64 -30 58 11.7 u 807
2012-10-20 05:29:08 C 01 32 23.48 -29 03 32.1 18.5 c 704
2012-10-20 05:49:16 C 01 32 23.70 -29 03 07.5 18.3 c 704
2012-10-20 06:09:22 C 01 32 23.97 -29 02 42.3 18.2 c 704
2012-10-20 06:29:28 C 01 32 24.31 -29 02 18.8 18.4 c 704
2012-10-20 06:49:31 C 01 32 24.58 -29 01 54.4 18.5 c 704
2012-10-23 03:50:39 C 01 33 49.17 -27 38 50.6 u I47
2012-10-23 04:00:08 C 01 33 49.36 -27 38 39.7 u I47
2012-10-23 04:10:10 C 01 33 49.47 -27 38 27.7 u I47
2012-11-27 01:51:37 C 01 51 17.90 -13 19 27.6 u 807
2012-11-27 01:58:43 C 01 51 18.10 -13 19 21.1 u 807
2012-11-29 08:19:33 C 01 52 55.507 -12 30 55.51 L F51
2012-11-29 08:36:18 C 01 52 55.948 -12 30 40.51 L F51
2014-01-01 12:04:14 C 09 38 53.18 +09 59 21.0 o 695
2014-01-01 12:16:39 C 09 38 52.84 +09 59 22.8 o 695
2014-01-01 12:22:07 C 09 38 52.69 +09 59 23.6 o 695
2014-01-01 12:27:34 C 09 38 52.57 +09 59 24.6 o 695
2014-01-01 12:33:46 C 09 38 52.41 +09 59 25.3 o 695
2014-01-01 12:39:14 C 09 38 52.29 +09 59 26.4 o 695
2014-01-01 12:44:40 C 09 38 52.15 +09 59 27.2 o 695
2014-01-02 11:15:49 C 09 38 18.62 +10 02 53.4 o 695
2014-01-02 11:21:43 C 09 38 18.47 +10 02 54.7 o 695
2014-01-02 11:27:10 C 09 38 18.33 +10 02 55.6 o 695
2014-01-02 11:32:38 C 09 38 18.19 +10 02 56.3 o 695
2015-04-09 08:42:24 C 13 03 13.90 +07 37 57.6 o 291
2015-04-09 08:50:43 C 13 03 13.47 +07 38 01.8 o 291
2015-04-09 08:59:02 C 13 03 13.05 +07 38 06.1 o 291
2025-04-26 10:57:38 C 21 35 51.198 -03 31 10.27 V I52
2025-04-26 11:16:11 C 21 35 54.704 -03 30 56.34 V I52
2025-04-26 11:22:52 C 21 35 55.950 -03 30 52.30 V I52
2025-04-26 11:29:33 C 21 35 57.260 -03 30 46.84 V I52
2025-07-29 14:23:51 C 04 08 54.582 +13 57 08.82 X F52
2025-07-29 14:30:27 C 04 08 55.381 +13 57 08.60 X F52
2025-07-29 14:37:06 C 04 08 56.213 +13 57 08.59 X F52
2025-07-29 14:43:39 C 04 08 57.029 +13 57 08.69 X F52
2025-11-24 12:43:19 C 05 52 59.948 +05 05 39.36 X F51
2025-11-24 13:02:55 C 05 52 58.737 +05 05 38.77 X F51
2025-11-24 13:22:09 C 05 52 57.551 +05 05 38.42 X F51
2025-11-24 13:41:19 C 05 52 56.364 +05 05 37.93 X F51
2025-11-28 10:36:11 C 05 47 15.209 +05 05 10.57 X F51
2025-11-28 10:55:00 C 05 47 13.988 +05 05 10.75 X F51
2025-11-28 11:13:54 C 05 47 12.759 +05 05 10.89 X F51
2025-12-25 09:35:10 C 05 08 15.558 +06 30 22.23 X F51
2025-12-25 09:52:33 C 05 08 14.660 +06 30 25.89 X F51
2025-12-25 10:10:28 C 05 08 13.748 +06 30 30.14 X F51