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
2017-04-19 12:38:51 C 14 20 11.221 +09 29 23.06 L F51
2017-04-19 12:56:53 C 14 20 03.886 +09 28 31.15 L F51
2017-04-23 09:24:09 C 13 45 36.77 +05 05 02.0 q G96
2017-04-23 09:30:20 C 13 45 34.48 +05 04 45.0 q G96
2017-04-23 09:36:31 C 13 45 32.25 +05 04 27.8 q G96
2017-04-23 09:42:40 C 13 45 30.05 +05 04 10.3 q G96
2017-04-29 09:10:25 C 13 01 40.12 -01 04 47.9 1 T09
2017-04-29 09:49:24 C 13 01 29.48 -01 06 17.4 1 T09
2017-04-29 10:08:49 C 13 01 24.19 -01 07 02.1 1 T09
2017-05-02 05:47:01 C 12 45 10.34 -03 34 01.0 q G96
2017-05-02 05:53:33 C 12 45 08.82 -03 34 14.2 q G96
2017-05-02 06:00:08 C 12 45 07.31 -03 34 27.8 q G96
2017-05-02 06:06:40 C 12 45 05.80 -03 34 40.8 q G96
2022-03-28 15:07:53 C 17 41 45.423 +54 06 51.54 V T12
2022-03-28 15:08:58 C 17 41 44.817 +54 06 52.62 V T12
2022-03-28 15:10:19 C 17 41 44.045 +54 06 53.91 V T12
2022-03-28 15:11:38 C 17 41 43.288 +54 06 55.31 V T12
2022-04-05 11:58:43 C 15 37 04.688 +53 28 36.01 V I52
2022-04-05 11:59:34 C 15 37 04.069 +53 28 34.32 V I52
2022-04-05 12:00:25 C 15 37 03.518 +53 28 32.77 V I52
2022-04-07 09:10:33 C 15 04 56.111 +51 49 32.59 V G96
2022-04-07 09:18:01 C 15 04 50.632 +51 49 12.76 V G96
2022-04-07 09:32:59 C 15 04 39.832 +51 48 33.19 V G96
2022-04-13 21:47:08 C 13 30 54.29 +41 45 32.0 X C95
2022-04-13 22:22:38 C 13 30 36.49 +41 42 45.0 X C95
2022-04-14 05:53:53 C 13 27 01.778 +41 07 05.92 V I52
2022-04-14 05:54:45 C 13 27 01.400 +41 07 01.42 V I52
2022-04-14 05:55:38 C 13 27 00.972 +41 06 56.48 V I52
2022-04-14 05:56:30 C 13 27 00.529 +41 06 52.81 V I52
2022-04-24 06:25:05 C 12 10 28.571 +22 09 13.02 U F52
2022-04-24 06:26:00 C 12 10 28.390 +22 09 09.11 U F52
2022-04-24 06:43:18 C 12 10 24.693 +22 07 56.55 U F52
2022-04-24 06:44:12 C 12 10 24.497 +22 07 52.67 U F52
2022-04-24 07:01:35 C 12 10 20.831 +22 06 40.83 U F52
2022-04-24 07:02:30 C 12 10 20.647 +22 06 37.09 U F52
2022-04-24 07:19:57 C 12 10 16.944 +22 05 24.62 U F52
2022-04-24 07:20:51 C 12 10 16.695 +22 05 19.69 U F52
2022-04-28 05:57:11 C 11 54 23.108 +15 59 27.42 V G96
2022-04-28 06:05:20 C 11 54 21.917 +15 58 58.80 V G96
2022-04-28 06:13:29 C 11 54 20.711 +15 58 29.96 V G96
2022-04-28 06:21:38 C 11 54 19.447 +15 58 00.23 V G96
2022-04-28 08:12:23 C 11 54 04.743 +15 51 38.97 V T12