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
2014-11-08 05:26:44 C 22 15 35.423 -25 46 56.63 L F51
2014-11-08 05:31:27 C 22 15 37.163 -25 47 00.59 L F51
2014-11-08 05:42:25 C 22 15 41.231 -25 47 09.49 L F51
2014-11-08 05:47:09 C 22 15 42.981 -25 47 13.32 L F51
2014-11-13 03:15:52 C 22 59 31.63 -26 49 26.2 o 291
2014-11-13 03:17:23 C 22 59 32.10 -26 49 26.6 o 291
2014-11-19 00:19:33 C 23 46 33.09 -26 44 44.6 u 807
2014-11-19 00:23:10 C 23 46 34.15 -26 44 43.2 u 807
2014-11-19 00:26:47 C 23 46 35.23 -26 44 42.3 u 807
2014-11-19 00:30:10 C 23 46 36.24 -26 44 41.5 u 807
2014-11-29 04:03:16 C 00 51 02.23 -24 27 52.9 q 703
2014-11-29 04:18:43 C 00 51 05.50 -24 27 42.1 q 703
2014-11-29 04:29:33 C 00 51 07.91 -24 27 32.3 q 703
2014-11-29 04:40:21 C 00 51 10.13 -24 27 23.9 q 703
2014-12-04 03:32:31 C 01 15 52.52 -22 47 59.3 u 807
2014-12-04 03:40:58 C 01 15 54.04 -22 47 51.5 u 807
2014-12-04 03:49:33 C 01 15 55.65 -22 47 43.5 u 807
2014-12-06 03:09:11 C 01 24 47.03 -22 05 26.7 u 807
2014-12-06 03:17:54 C 01 24 48.57 -22 05 18.7 u 807
2014-12-23 02:23:51 C 02 25 01.12 -15 33 59.1 o 291
2014-12-23 02:26:01 C 02 25 01.40 -15 33 56.7 o 291
2014-12-23 02:28:11 C 02 25 01.67 -15 33 54.8 o 291
2015-01-19 06:38:08 C 03 34 06.634 -05 23 06.62 L F51
2015-01-19 06:56:21 C 03 34 08.321 -05 22 50.89 L F51
2015-01-19 07:32:24 C 03 34 11.641 -05 22 19.56 L F51
2017-06-19 09:40:40 C 22 19 33.89 +26 38 27.2 q I52
2017-06-19 09:45:05 C 22 19 34.66 +26 38 36.5 q I52
2017-06-19 09:49:29 C 22 19 35.40 +26 38 44.6 q I52
2017-06-21 09:45:25 C 22 28 18.67 +28 09 04.3 q I52
2017-06-21 09:50:17 C 22 28 19.42 +28 09 13.7 q I52
2017-06-21 09:55:05 C 22 28 20.33 +28 09 23.0 q I52
2017-07-13 14:11:08 C 00 27 43.111 +41 57 33.94 L F51
2017-07-13 14:21:04 C 00 27 45.608 +41 57 44.69 L F51
2017-07-13 14:29:49 C 00 27 47.848 +41 57 54.20 L F51
2017-10-23 10:45:52 C 08 01 11.05 +07 35 54.7 U G96
2017-10-23 10:53:20 C 08 01 11.55 +07 35 44.7 U G96
2017-10-23 11:00:48 C 08 01 12.04 +07 35 36.4 U G96
2017-10-23 11:08:16 C 08 01 12.57 +07 35 26.4 U G96
2017-11-19 10:51:48 C 08 30 52.56 -04 46 13.1 U G96
2017-11-19 11:00:42 C 08 30 52.66 -04 46 22.5 U G96
2017-11-19 11:09:35 C 08 30 52.78 -04 46 31.1 U G96
2017-12-22 07:58:15 C 08 11 07.54 -14 25 20.5 U G96
2017-12-22 08:08:11 C 08 11 06.82 -14 25 22.7 U G96
2017-12-22 08:15:37 C 08 11 06.26 -14 25 25.4 U G96
2021-01-15 13:06:31 C 10 25 32.318 -15 15 48.91 U F51
2021-01-15 13:23:00 C 10 25 31.710 -15 15 51.52 U F51
2021-01-15 13:39:30 C 10 25 31.100 -15 15 53.74 U F51
2021-02-09 07:12:06 C 09 51 27.64 -13 17 27.9 V G96
2021-02-09 07:19:30 C 09 51 27.10 -13 17 23.5 V G96
2021-02-09 07:26:56 C 09 51 26.52 -13 17 19.0 V G96