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
2021-02-12 10:02:14 C 09 45 53.019 -12 31 00.63 U F51
2021-02-12 10:20:56 C 09 45 51.543 -12 30 48.24 U F51
2021-02-12 10:39:37 C 09 45 50.070 -12 30 35.85 U F51
2021-03-07 03:54:36 C 09 11 32.11 -04 43 36.6 V G96
2021-03-07 04:01:59 C 09 11 31.84 -04 43 29.5 V G96
2021-03-07 04:09:24 C 09 11 31.45 -04 43 22.7 V G96
2021-03-07 04:16:54 C 09 11 31.08 -04 43 16.3 V G96
2024-03-01 04:09:21 C 11 48 39.360 -15 46 13.80 V 807
2024-03-01 04:17:19 C 11 48 38.860 -15 46 09.00 V 807
2024-03-01 04:25:16 C 11 48 38.320 -15 46 04.30 V 807
2024-03-18 09:41:33 C 11 20 49.809 -10 21 28.13 X F51
2024-03-18 09:58:22 C 11 20 48.586 -10 21 12.19 X F51
2024-03-18 10:15:09 C 11 20 47.382 -10 20 56.14 X F51
2024-03-18 10:31:56 C 11 20 46.161 -10 20 40.02 X F51
2024-03-31 09:54:39 C 11 01 45.896 -05 12 37.94 X F52
2024-03-31 10:34:21 C 11 01 43.750 -05 11 58.83 X F52
2024-03-31 10:54:11 C 11 01 42.659 -05 11 39.25 X F52
2024-04-09 08:34:50 C 10 52 49.061 -01 52 36.30 X F51
2024-04-09 08:52:51 C 10 52 48.413 -01 52 20.52 X F51
2024-04-09 09:10:52 C 10 52 47.768 -01 52 05.04 X F51
2024-04-09 14:12:53 C 10 52 38.697 -01 47 46.73 O18
2024-04-09 15:14:50 C 10 52 36.555 -01 46 53.13 O18
2024-04-09 17:49:51 C 10 52 31.293 -01 44 39.40 O18
2024-04-10 14:14:32 C 10 51 55.147 -01 27 11.96 O18
2024-04-10 17:52:57 C 10 51 48.215 -01 24 07.19 O18
2024-04-11 14:11:56 C 10 51 15.062 -01 07 06.20 O18
2024-04-11 15:14:12 C 10 51 13.218 -01 06 14.78 O18
2024-04-15 15:04:11 C 10 49 06.581 +00 09 37.06 O18
2024-04-15 17:32:02 C 10 49 03.608 +00 11 28.70 O18