2021 LH9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4490085318 ± 3.71e-08
Semi-major axis (a)2.1684813127 AU ± 7.09e-08
Inclination (i)6.33377008° ± 3.94e-06
Long. of Asc. Node (Ω)293.98543803° ± 2.11e-05
Arg. of Perihelion (ω)30.55124580° ± 2.79e-05
Mean Anomaly (M)118.86068020° ± 2.61e-05
Mean Motion (n)0.3086588618°/day ± 1.51e-08
Perihelion dist (q)1.19481470 AU ± 8.94e-08
Aphelion dist (Q)3.14214792 AU ± 1.30e-07
Orbital Period3.19325445 yr ± 1.57e-07
Physical Parameters
H (abs. magnitude)19.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.321″
Uncertainty0
Orbit TypeAmor
MOID0.188443 AU
Observations Used168
Oppositions4
Arc Total2018-2024
First Observation Used2018-11-07
Last Observation Used2024-04-20
Observations (172)
Date Type RA Dec Mag Band Observatory
2021-10-04 14:09:15 C 21 36 27.24 +08 25 09.3 V D29
2021-10-08 19:29:21 C 21 48 16.20 +08 49 39.0 V K87
2021-10-08 19:37:48 C 21 48 17.14 +08 49 40.3 V K87
2021-10-08 19:46:13 C 21 48 18.10 +08 49 41.7 V K87
2021-10-10 04:22:47 C 21 52 03.33 +08 56 44.9 o 691
2021-10-10 04:39:57 C 21 52 05.23 +08 56 48.7 o 691
2021-10-25 08:00:58 C 22 32 20.09 +09 55 26.7 o 691
2021-10-25 08:15:55 C 22 32 21.61 +09 55 28.3 o 691
2021-11-09 03:06:38 C 23 08 50.83 +10 41 22.7 V G96
2021-11-09 03:14:55 C 23 08 51.62 +10 41 23.9 V G96
2021-11-09 03:23:12 C 23 08 52.40 +10 41 24.3 V G96
2021-11-09 03:31:28 C 23 08 53.23 +10 41 26.0 V G96
2021-11-12 02:49:50 C 23 15 55.92 +10 51 23.0 o 291
2021-11-12 03:04:46 C 23 15 57.39 +10 51 25.0 o 291
2021-11-12 03:19:43 C 23 15 58.76 +10 51 27.4 o 291
2024-04-17 13:27:54 C 13 49 41.398 -24 01 34.89 V T12
2024-04-17 13:33:10 C 13 49 41.100 -24 01 33.84 V T12
2024-04-17 13:38:26 C 13 49 40.806 -24 01 32.76 V T12
2024-04-20 07:35:44 C 13 46 01.760 -23 47 51.80 V V06
2024-04-20 07:53:02 C 13 46 00.780 -23 47 47.50 V V06
2024-04-20 08:10:19 C 13 45 59.680 -23 47 43.90 V V06
2024-04-20 08:27:37 C 13 45 58.730 -23 47 40.40 V V06