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
2014-06-07 03:52:51 C 15 21 48.74 +11 43 40.3 o 291
2014-06-07 03:56:32 C 15 21 48.49 +11 43 43.9 o 291
2014-06-20 22:19:20 C 15 05 03.02 +15 48 08.8 t 204
2014-06-20 22:39:10 C 15 05 02.21 +15 48 18.7 t 204
2014-06-20 22:59:41 C 15 05 01.39 +15 48 28.3 t 204
2014-06-21 04:40:09 C 15 04 49.54 +15 51 22.3 q H45
2014-06-21 04:41:55 C 15 04 49.44 +15 51 22.5 q H45
2014-06-21 04:44:26 C 15 04 49.36 +15 51 23.7 q H45
2014-06-21 04:46:48 C 15 04 49.27 +15 51 25.0 q H45
2014-06-21 04:48:33 C 15 04 49.19 +15 51 25.8 q H45
2014-06-21 04:51:52 C 15 04 49.06 +15 51 27.2 q H45
2014-07-29 04:38:09 C 15 12 40.56 +16 29 49.4 o 291
2014-07-29 04:40:14 C 15 12 40.67 +16 29 48.7 o 291
2014-07-29 04:46:28 C 15 12 40.91 +16 29 46.7 o 291
2014-07-29 04:48:33 C 15 12 40.99 +16 29 46.2 o 291
2014-07-29 04:52:44 C 15 12 41.17 +16 29 45.4 o 291
2014-07-30 03:50:06 C 15 13 46.88 +16 23 42.6 o 291
2014-07-30 03:54:50 C 15 13 47.08 +16 23 41.3 o 291
2014-07-30 03:59:36 C 15 13 47.29 +16 23 40.0 o 291
2014-08-27 05:54:23 C 16 00 14.630 +11 57 55.52 L F51
2014-08-27 06:12:25 C 16 00 16.095 +11 57 45.79 L F51
2014-08-27 06:30:15 C 16 00 17.581 +11 57 36.31 L F51
2014-08-27 06:48:10 C 16 00 19.072 +11 57 26.46 L F51
2014-09-23 02:10:23 C 17 12 29.93 +04 05 58.2 o 291
2014-09-23 02:13:08 C 17 12 30.27 +04 05 55.4 o 291
2014-10-17 02:13:41 C 19 07 03.85 -10 21 24.1 o 291
2014-10-17 02:14:47 C 19 07 04.11 -10 21 26.0 o 291
2014-10-17 02:15:52 C 19 07 04.41 -10 21 28.7 o 291
2014-10-24 01:38:35 C 19 58 20.85 -16 08 56.9 q 448
2014-10-24 01:57:17 C 19 58 26.86 -16 09 36.3 q 448
2014-10-24 02:09:07 C 19 58 30.66 -16 10 00.5 q 448
2014-10-25 02:15:57 C 20 06 43.64 -16 59 55.4 q G96
2014-10-25 02:24:44 C 20 06 46.53 -17 00 13.3 q G96
2014-10-25 02:42:18 C 20 06 52.35 -17 00 49.1 q G96
2014-10-29 01:43:50 C 20 41 03.65 -20 08 32.6 o 291
2014-10-29 01:44:39 C 20 41 03.93 -20 08 34.1 o 291
2014-10-29 01:45:33 C 20 41 04.23 -20 08 36.1 o 291
2014-10-31 01:58:37 C 20 59 19.07 -21 35 04.1 o 291
2014-10-31 02:01:20 C 20 59 20.07 -21 35 08.7 o 291
2014-10-31 02:03:57 C 20 59 21.02 -21 35 13.5 o 291
2014-11-03 03:06:05 C 21 27 43.02 -23 29 48.3 o 291
2014-11-03 03:07:28 C 21 27 43.52 -23 29 50.4 o 291
2014-11-03 03:08:59 C 21 27 44.12 -23 29 52.4 o 291
2014-11-04 03:35:14 C 21 37 19.64 -24 03 03.6 o 291
2014-11-04 03:36:32 C 21 37 20.10 -24 03 04.8 o 291
2014-11-04 03:37:51 C 21 37 20.67 -24 03 07.0 o 291
2014-11-08 04:55:13 C 22 15 23.766 -25 46 30.45 L F51
2014-11-08 04:59:56 C 22 15 25.521 -25 46 34.44 L F51
2014-11-08 05:10:58 C 22 15 29.603 -25 46 43.54 L F51
2014-11-08 05:15:42 C 22 15 31.349 -25 46 47.61 L F51