420210 (2011 HF)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2347071379 ± 2.32e-08
Semi-major axis (a)1.2834811755 AU ± 2.73e-09
Inclination (i)10.62309112° ± 3.18e-06
Long. of Asc. Node (Ω)204.87474207° ± 9.39e-06
Arg. of Perihelion (ω)149.66031519° ± 1.04e-05
Mean Anomaly (M)238.31625809° ± 1.00e-05
Mean Motion (n)0.6778412919°/day ± 2.16e-09
Perihelion dist (q)0.98223898 AU ± 2.99e-08
Aphelion dist (Q)1.58472337 AU ± 3.00e-08
Orbital Period1.45406645 yr ± 4.64e-09
Physical Parameters
H (abs. magnitude)20.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.245″
Uncertainty0
Orbit TypeApollo
MOID0.009083 AU
Observations Used210
Oppositions4
Arc Total2011-2024
First Observation Used2011-04-22
Last Observation Used2024-04-15
Observations (229)
Date Type RA Dec Mag Band Observatory
2011-04-22 03:55:40 C 12 55 50.38 -05 26 42.2 o 691
2011-04-22 04:57:05 C 12 55 46.20 -05 25 36.3 o 691
2011-04-22 05:58:31 C 12 55 42.01 -05 24 29.7 o 691
2011-04-22 22:13:16 C 12 54 39.88 -05 07 04.6 u J95
2011-04-22 23:03:07 C 12 54 36.55 -05 06 12.1 u J95
2011-04-23 01:57:19 C 12 54 25.92 -05 02 43.5 o 807
2011-04-23 02:16:41 C 12 54 24.60 -05 02 22.9 o 807
2011-04-23 02:24:48 C 12 54 24.07 -05 02 14.5 o 807
2011-04-23 06:24:24 C 12 54 08.30 -04 58 16.2 u H36
2011-04-23 07:37:00 C 12 54 03.58 -04 56 57.7 u H36
2011-04-23 08:15:55 C 12 54 01.19 -04 56 15.3 o 291
2011-04-23 08:21:13 C 12 54 00.82 -04 56 09.5 o 291
2011-04-24 01:49:20 C 12 52 56.30 -04 37 16.0 o 807
2011-04-24 02:02:25 C 12 52 55.45 -04 37 01.9 o 807
2011-04-24 02:15:49 C 12 52 54.57 -04 36 47.8 o 807
2011-04-24 02:28:35 C 12 52 53.71 -04 36 34.7 o 807
2011-04-24 04:44:05 C 12 52 45.42 -04 34 26.9 o 291
2011-04-24 04:51:54 C 12 52 44.89 -04 34 18.4 o 291
2011-04-24 04:57:20 C 12 52 44.59 -04 34 14.0 o 291
2011-04-25 05:40:16 C 12 51 13.28 -04 07 52.8 o 807
2011-04-25 05:45:35 C 12 51 12.95 -04 07 47.1 o 807
2011-04-25 06:53:07 C 12 51 08.66 -04 06 35.9 o 807
2011-04-26 05:24:06 C 12 49 49.25 -03 43 26.6 o 291
2011-04-26 05:29:28 C 12 49 48.92 -03 43 20.9 o 291
2011-04-27 06:00:21 C 12 48 23.62 -03 18 08.9 o 291
2011-04-27 06:05:41 C 12 48 23.29 -03 18 03.3 o 291
2011-04-27 06:13:08 C 12 48 22.84 -03 17 55.8 o 291
2011-04-29 03:45:20 C 12 45 52.07 -02 32 11.1 o 691
2011-04-29 04:11:59 C 12 45 50.53 -02 31 44.2 o 691
2011-04-29 04:38:38 C 12 45 49.01 -02 31 17.9 o 691
2011-05-02 06:33:47 C 12 42 04.00 -01 20 26.8 o 291
2011-05-02 06:39:27 C 12 42 03.71 -01 20 21.8 o 291
2011-05-02 06:46:12 C 12 42 03.40 -01 20 14.8 o 291
2011-05-04 03:32:19 C 12 40 01.71 -00 39 37.8 o 691
2011-05-04 04:02:52 C 12 40 00.13 -00 39 09.2 o 691
2011-05-04 04:33:25 C 12 39 58.82 -00 38 43.5 o 691
2011-05-06 06:24:56 C 12 37 55.26 +00 04 14.8 o 291
2011-05-06 06:30:17 C 12 37 55.04 +00 04 19.3 o 291
2011-05-06 06:36:45 C 12 37 54.74 +00 04 23.7 o 291
2011-05-07 05:13:00 C 12 37 03.88 +00 23 04.9 o 291
2011-05-07 05:18:16 C 12 37 03.66 +00 23 09.4 o 291
2011-05-07 05:23:32 C 12 37 03.43 +00 23 14.4 o 291
2011-05-08 03:56:01 C 12 36 15.56 +00 41 18.7 o 291
2011-05-08 04:01:37 C 12 36 15.43 +00 41 24.6 o 291
2011-05-08 04:08:29 C 12 36 15.16 +00 41 30.1 o 291
2011-05-09 04:43:58 C 12 35 25.88 +01 00 39.3 o 291
2011-05-09 04:49:22 C 12 35 25.71 +01 00 43.5 o 291
2011-05-09 04:55:18 C 12 35 25.50 +01 00 48.1 o 291
2011-05-21 06:16:37 C 12 30 11.81 +03 58 36.0 o 291
2011-05-21 06:22:09 C 12 30 11.77 +03 58 38.5 o 291