2012 HC20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6458804194 ± 1.61e-07
Semi-major axis (a)2.3080987051 AU ± 1.24e-08
Inclination (i)18.22359136° ± 2.44e-05
Long. of Asc. Node (Ω)36.97741188° ± 7.90e-06
Arg. of Perihelion (ω)263.72557615° ± 4.56e-05
Mean Anomaly (M)291.87829866° ± 1.28e-05
Mean Motion (n)0.2810804953°/day ± 2.27e-09
Perihelion dist (q)0.81734295 AU ± 3.71e-07
Aphelion dist (Q)3.79885446 AU ± 3.72e-07
Orbital Period3.50656235 yr ± 2.83e-08
Physical Parameters
H (abs. magnitude)21.47
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.356″
Uncertainty0
Orbit TypeApollo
MOID0.112683 AU
Observations Used96
Oppositions5
Arc Total2012-2019
First Observation Used2012-04-24
Last Observation Used2019-05-08
Observations (100)
Date Type RA Dec Mag Band Observatory
2012-04-24 08:50:02 C 14 36 23.72 -11 41 54.5 r 703
2012-04-24 08:58:11 C 14 36 22.89 -11 42 09.1 r 703
2012-04-24 09:06:25 C 14 36 21.99 -11 42 26.2 r 703
2012-04-24 09:14:40 C 14 36 21.20 -11 42 41.0 r 703
2012-04-24 09:55:22 C 14 36 17.02 -11 43 58.4 r 703
2012-04-24 10:00:32 C 14 36 16.48 -11 44 09.3 r 703
2012-04-24 10:05:50 C 14 36 15.94 -11 44 20.4 r 703
2012-04-24 10:11:04 C 14 36 15.40 -11 44 28.0 r 703
2012-04-25 07:43:58 C 14 34 07.19 -12 26 59.3 t H21
2012-04-25 07:51:36 C 14 34 06.29 -12 27 14.6 t H21
2012-04-25 07:59:13 C 14 34 05.44 -12 27 29.2 t H21
2012-04-25 08:24:38 C 14 34 03.25 -12 28 18.5 r 703
2012-04-25 08:29:41 C 14 34 02.74 -12 28 29.5 r 703
2012-04-25 08:34:52 C 14 34 02.06 -12 28 40.3 r 703
2012-04-25 08:39:59 C 14 34 01.52 -12 28 50.5 r 703
2012-04-26 06:52:00 C 14 31 37.96 -13 15 51.3 u H36
2012-04-26 07:03:25 C 14 31 36.62 -13 16 16.5 u H36
2012-04-26 07:14:51 C 14 31 35.23 -13 16 41.9 u H36
2012-04-26 07:26:22 C 14 31 33.83 -13 17 06.3 u H36
2012-04-26 12:52:11 C 14 30 58.31 -13 29 05.0 o 300
2012-04-26 12:54:52 C 14 30 57.97 -13 29 11.0 o 300
2012-04-26 13:02:52 C 14 30 56.95 -13 29 28.5 o 300
2012-04-26 13:08:14 C 14 30 56.33 -13 29 40.2 o 300
2012-04-27 10:22:02 C 14 28 22.942 -14 18 38.91 L F51
2012-04-27 10:43:36 C 14 28 20.044 -14 19 30.49 L F51
2012-04-27 11:26:46 C 14 28 14.231 -14 21 13.65 L F51
2012-04-30 07:31:17 C 14 18 33.13 -17 23 43.6 u 448
2012-04-30 07:42:04 C 14 18 31.25 -17 24 16.3 u 448
2012-04-30 07:53:42 C 14 18 29.27 -17 24 50.8 u 448
2012-05-01 05:28:43 C 14 14 50.47 -18 30 58.3 o 807
2012-05-01 05:32:21 C 14 14 49.78 -18 31 10.0 o 807
2012-05-01 05:36:01 C 14 14 49.11 -18 31 21.7 o 807
2012-05-01 05:39:40 C 14 14 48.44 -18 31 33.1 o 807
2012-05-01 05:43:24 C 14 14 47.73 -18 31 45.1 o 807
2012-05-01 05:47:02 C 14 14 47.05 -18 31 56.7 o 807
2012-05-02 23:12:54 C 14 06 50.33 -20 54 54.5 t 204
2012-05-02 23:24:21 C 14 06 47.81 -20 55 36.8 t 204
2012-05-03 07:41:53 C 14 05 00.82 -21 26 22.2 t H21
2012-05-03 07:47:08 C 14 04 59.70 -21 26 41.9 t H21
2012-05-08 04:44:54 C 13 31 45.43 -30 16 59.6 u H36
2012-05-08 04:57:20 C 13 31 40.60 -30 18 05.5 u H36
2012-05-08 05:09:57 C 13 31 35.55 -30 19 12.0 u H36
2012-05-09 06:48:55 C 13 21 23.25 -32 39 30.3 o 807
2012-05-09 06:52:21 C 13 21 21.75 -32 39 49.6 o 807
2012-05-09 06:55:51 C 13 21 20.23 -32 40 09.1 o 807
2012-05-09 06:59:17 C 13 21 18.77 -32 40 28.1 o 807
2012-05-09 07:06:19 C 13 21 15.75 -32 41 07.4 o 807
2012-05-09 22:52:29 C 13 14 25.73 -34 12 17.3 o 807
2012-05-09 22:56:13 C 13 14 24.01 -34 12 39.6 o 807
2012-05-09 22:59:56 C 13 14 22.24 -34 13 02.1 o 807