2012 HN40

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6712601346 ± 6.40e-08
Semi-major axis (a)2.7061963487 AU ± 2.16e-08
Inclination (i)14.38333734° ± 1.96e-05
Long. of Asc. Node (Ω)60.56440310° ± 8.47e-06
Arg. of Perihelion (ω)246.67622997° ± 2.55e-05
Mean Anomaly (M)357.40540905° ± 1.25e-05
Mean Motion (n)0.2213978099°/day ± 2.65e-09
Perihelion dist (q)0.88963462 AU ± 1.73e-07
Aphelion dist (Q)4.52275807 AU ± 1.77e-07
Orbital Period4.45183393 yr ± 5.33e-08
Physical Parameters
H (abs. magnitude)20.49
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.284″
Uncertainty0
Orbit TypeApollo
MOID0.074556 AU
Observations Used90
Oppositions7
Arc Total2012-2021
First Observation Used2012-04-21
Last Observation Used2021-05-13
Observations (121)
Date Type RA Dec Mag Band Observatory
2012-06-06 23:08:27 C 12 39 33.80 -18 21 08.3 o 807
2012-06-08 10:19:54 C 12 23 09.82 -20 37 13.3 u D90
2012-06-08 10:29:35 C 12 23 04.92 -20 37 51.2 u D90
2012-06-08 10:39:05 C 12 23 00.11 -20 38 28.9 u D90
2012-06-09 04:20:43 C 12 14 06.42 -21 50 05.7 o G48
2012-06-09 04:22:16 C 12 14 05.69 -21 50 11.6 o G48
2012-06-09 04:23:04 C 12 14 05.28 -21 50 14.9 o G48
2012-06-09 04:23:49 C 12 14 04.87 -21 50 17.8 o G48
2012-09-19 10:01:38 C 05 01 55.56 -00 32 55.6 o 291
2012-09-19 10:07:25 C 05 01 55.36 -00 32 51.8 o 291
2012-09-19 10:13:11 C 05 01 55.15 -00 32 49.2 o 291
2021-05-10 03:56:14 S 21 30 21.713 -21 48 14.83 L C51
2021-05-10 10:12:41 S 21 32 55.697 -21 47 54.78 L C51
2021-05-10 13:21:00 S 21 34 12.794 -21 47 42.68 L C51
2021-05-10 14:55:04 S 21 34 51.34 -21 47 35.5 L C51
2021-05-10 16:29:19 S 21 35 29.95 -21 47 27.8 L C51
2021-05-10 18:03:23 S 21 36 08.52 -21 47 20.3 L C51
2021-05-10 21:11:42 S 21 37 25.83 -21 47 01.3 L C51
2021-05-11 00:19:50 S 21 38 43.11 -21 46 41.1 L C51
2021-05-11 03:28:09 S 21 40 00.48 -21 46 19.3 L C51
2021-05-13 04:53:44 C 22 00 24.793 -21 36 02.03 V J04