2012 HL31

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3740296446 ± 4.40e-07
Semi-major axis (a)0.8876841518 AU ± 5.83e-09
Inclination (i)19.80848903° ± 2.70e-05
Long. of Asc. Node (Ω)37.48379112° ± 5.88e-06
Arg. of Perihelion (ω)17.54538773° ± 1.63e-05
Mean Anomaly (M)226.47318365° ± 6.43e-05
Mean Motion (n)1.1784864045°/day ± 1.16e-08
Perihelion dist (q)0.55566396 AU ± 3.91e-07
Aphelion dist (Q)1.21970434 AU ± 3.91e-07
Orbital Period0.83634930 yr ± 8.24e-09
NGA Modelr2
A2-1.08286456e-13 ± 1.37e-14 AU/d²
Physical Parameters
H (abs. magnitude)22.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.289″
Uncertainty0
Orbit TypeAten
MOID0.145160 AU
Observations Used89
Oppositions2
Arc Total2012-2022
First Observation Used2012-04-28
Last Observation Used2022-04-28
Observations (92)
Date Type RA Dec Mag Band Observatory
2012-04-28 07:34:03 C 14 29 43.90 -17 25 55.9 r G96
2012-04-28 07:43:59 C 14 29 40.34 -17 26 13.8 r G96
2012-04-28 07:53:58 C 14 29 36.81 -17 26 31.8 r G96
2012-04-28 08:03:59 C 14 29 33.25 -17 26 49.9 r G96
2012-04-28 09:06:21 C 14 29 11.07 -17 28 42.0 r G96
2012-04-28 09:07:22 C 14 29 10.75 -17 28 43.7 r G96
2012-04-28 09:08:21 C 14 29 10.39 -17 28 45.4 r G96
2012-04-28 09:09:21 C 14 29 10.03 -17 28 47.3 r G96
2012-04-28 09:35:50 C 14 29 00.68 -17 29 35.4 c 854
2012-04-28 09:36:14 C 14 29 00.56 -17 29 35.3 o 291
2012-04-28 09:38:26 C 14 28 59.79 -17 29 38.9 o 291
2012-04-28 09:40:37 C 14 28 58.99 -17 29 43.3 o 291
2012-04-28 09:44:28 C 14 28 57.67 -17 29 51.0 c 854
2012-04-28 09:51:55 C 14 28 54.85 -17 30 02.6 c 854
2012-04-29 05:55:14 C 14 22 04.73 -18 04 40.6 u I48
2012-04-29 06:05:48 C 14 22 00.86 -18 05 00.0 u I48
2012-04-29 06:16:21 C 14 21 57.11 -18 05 18.6 u I48
2012-04-29 07:40:16 C 14 21 29.77 -18 08 36.0 r G96
2012-04-29 07:43:17 C 14 21 28.69 -18 08 41.1 r G96
2012-04-29 07:49:16 C 14 21 26.60 -18 08 51.3 r G96
2012-05-01 04:26:49 C 14 06 32.61 -19 20 55.0 o 807
2012-05-01 04:30:13 C 14 06 31.44 -19 21 00.2 o 807
2012-05-01 04:33:36 C 14 06 30.30 -19 21 05.2 o 807
2012-05-02 05:04:46 C 13 58 33.94 -19 58 19.9 o H21
2012-05-02 05:11:29 C 13 58 31.71 -19 58 29.5 o H21
2012-05-02 05:18:11 C 13 58 29.51 -19 58 39.4 o H21
2012-05-02 23:04:10 C 13 52 54.74 -20 22 33.0 o 807
2012-05-02 23:10:23 C 13 52 52.76 -20 22 41.5 o 807
2012-05-02 23:16:35 C 13 52 50.80 -20 22 50.4 o 807
2012-05-02 23:22:42 C 13 52 48.87 -20 22 59.4 o 807
2012-05-09 02:52:38 C 13 11 16.38 -23 01 24.3 o 807
2012-05-09 03:03:06 C 13 11 13.69 -23 01 32.7 o 807
2012-05-09 03:13:26 C 13 11 11.03 -23 01 41.2 o 807
2012-05-10 03:59:38 C 13 05 13.64 -23 21 35.4 t H21
2012-05-10 04:10:56 C 13 05 10.85 -23 21 44.3 t H21
2012-05-10 04:22:09 C 13 05 08.13 -23 21 53.1 t H21
2012-05-15 03:12:37 C 12 40 38.92 -24 32 16.0 o 807
2012-05-15 03:21:04 C 12 40 37.36 -24 32 19.9 o 807
2012-05-15 03:29:32 C 12 40 35.78 -24 32 23.9 o 807
2017-03-27 10:16:33 C 17 32 28.77 +24 41 20.4 o 926
2017-03-27 10:24:23 C 17 32 26.97 +24 41 16.9 o 926
2017-03-27 10:34:01 C 17 32 24.75 +24 41 13.1 o 926
2017-03-29 08:55:18 C 17 21 35.87 +24 16 51.3 o 926
2017-03-29 09:01:58 C 17 21 34.17 +24 16 47.6 o 926
2017-03-29 09:08:38 C 17 21 32.50 +24 16 44.1 o 926
2017-04-11 07:37:10 C 15 40 25.11 +17 52 51.0 t 705
2017-04-11 07:38:38 C 15 40 24.51 +17 52 48.0 t 705
2017-04-11 07:40:06 C 15 40 23.81 +17 52 44.5 t 705
2017-04-19 12:02:34 C 14 20 26.027 +09 31 07.22 L F51
2017-04-19 12:20:51 C 14 20 18.572 +09 30 14.85 L F51