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
2012-05-09 23:03:40 C 13 14 20.48 -34 13 24.3 o 807
2012-05-09 23:07:22 C 13 14 18.74 -34 13 46.6 o 807
2012-05-09 23:11:04 C 13 14 16.99 -34 14 08.7 o 807
2012-05-09 23:14:46 C 13 14 15.29 -34 14 30.9 o 807
2012-05-09 23:18:27 C 13 14 13.52 -34 14 52.8 o 807
2012-05-17 23:51:17 C 10 41 32.33 -52 46 35.8 o 807
2012-05-17 23:56:01 C 10 41 26.60 -52 46 53.7 o 807
2012-05-18 00:03:06 C 10 41 18.02 -52 47 20.4 o 807
2012-05-18 00:06:35 C 10 41 13.82 -52 47 33.4 o 807
2012-05-23 08:49:03 C 08 04 15.01 -54 17 43.2 o 474
2012-05-23 08:51:06 C 08 04 12.72 -54 17 38.5 o 474
2012-05-23 08:57:13 C 08 04 06.10 -54 17 25.7 o 474
2012-05-23 08:58:55 C 08 04 04.16 -54 17 21.5 o 474
2019-05-01 06:48:34 C 12 43 52.29 +01 25 56.2 V G96
2019-05-01 06:56:00 C 12 43 51.01 +01 25 50.1 V G96
2019-05-01 07:03:26 C 12 43 49.65 +01 25 44.6 V G96
2019-05-01 07:10:54 C 12 43 48.25 +01 25 38.2 V G96
2019-05-01 09:03:31 C 12 43 27.94 +01 24 10.8 V I52
2019-05-01 09:07:07 C 12 43 27.26 +01 24 07.7 V I52
2019-05-01 09:10:43 C 12 43 26.65 +01 24 05.3 V I52
2019-05-01 09:14:19 C 12 43 26.01 +01 24 03.1 V I52
2019-05-01 20:31:50 C 12 41 27.29 +01 14 59.6 V 033
2019-05-01 20:37:01 C 12 41 26.33 +01 14 56.2 V 033
2019-05-01 20:42:25 C 12 41 25.34 +01 14 51.7 V 033
2019-05-01 20:47:35 C 12 41 24.42 +01 14 47.6 V 033
2019-05-01 20:52:45 C 12 41 23.49 +01 14 43.4 V 033
2019-05-01 21:03:41 C 12 41 21.43 +01 14 36.3 V L01
2019-05-01 21:07:40 C 12 41 20.70 +01 14 32.9 V L01
2019-05-01 21:10:31 C 12 41 20.14 +01 14 30.5 V L01
2019-05-01 22:11:28 C 12 41 08.93 +01 13 41.3 o K88
2019-05-01 22:27:54 C 12 41 05.93 +01 13 27.7 o K88
2019-05-02 04:23:55 C 12 40 03.06 +01 08 44.0 V I52
2019-05-02 04:25:43 C 12 40 02.72 +01 08 42.7 V I52
2019-05-02 04:29:19 C 12 40 02.18 +01 08 39.9 V I52
2019-05-02 05:23:18 C 12 39 51.59 +01 07 53.0 u H21
2019-05-02 05:34:55 C 12 39 49.44 +01 07 43.2 u H21
2019-05-03 00:15:39 C 12 36 26.25 +00 51 59.0 V J95
2019-05-03 00:39:26 C 12 36 21.77 +00 51 38.2 V J95
2019-05-03 06:57:16 C 12 35 12.60 +00 46 18.7 V I52
2019-05-03 07:00:34 C 12 35 12.08 +00 46 16.2 V I52
2019-05-03 07:03:52 C 12 35 11.31 +00 46 13.4 V I52
2019-05-03 07:07:10 C 12 35 10.72 +00 46 10.4 V I52
2019-05-04 03:25:00 C 12 31 26.07 +00 28 05.0 V I52
2019-05-04 03:28:07 C 12 31 25.49 +00 28 02.1 V I52
2019-05-04 03:31:14 C 12 31 24.90 +00 27 59.3 V I52
2019-05-04 03:34:20 C 12 31 24.30 +00 27 56.7 V I52
2019-05-08 06:09:15 C 12 12 13.715 -01 11 44.41 U F51
2019-05-08 06:25:56 C 12 12 10.235 -01 12 03.05 U F51
2019-05-08 06:42:41 C 12 12 06.736 -01 12 21.57 U F51
2019-05-08 06:59:26 C 12 12 03.231 -01 12 40.38 U F51