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
2021-09-01 21:35:34 C 20 02 44.80 +00 39 58.7 V 160
2021-09-03 21:41:04 C 20 08 12.92 +01 27 09.0 V Z80
2021-09-03 22:10:34 C 20 08 16.07 +01 27 37.3 V Z80
2021-09-04 20:29:19 C 20 10 50.52 +01 48 35.1 V K87
2021-09-04 20:33:31 C 20 10 50.97 +01 48 38.8 V K87
2021-09-04 20:37:45 C 20 10 51.35 +01 48 42.4 V K87
2021-09-05 20:57:27 C 20 13 40.49 +02 10 52.2 V K87
2021-09-05 21:03:47 C 20 13 41.12 +02 10 59.0 V K87
2021-09-05 21:10:05 C 20 13 41.80 +02 11 03.5 V K87
2021-09-07 08:54:37 C 20 17 52.21 +02 42 36.1 V T08
2021-09-07 08:59:16 C 20 17 52.72 +02 42 39.8 V T08
2021-09-07 09:45:57 C 20 17 57.82 +02 43 19.1 V T08
2021-09-07 09:53:22 C 20 17 58.59 +02 43 25.9 V T08
2021-09-08 21:40:35 C 20 22 13.03 +03 12 54.2 V L38
2021-09-08 22:28:16 C 20 22 18.37 +03 13 32.1 V L38
2021-09-08 23:15:44 C 20 22 23.77 +03 14 11.2 V L38
2021-09-09 07:22:58 C 20 23 22.727 +03 20 58.79 U F52
2021-09-09 07:38:02 C 20 23 24.374 +03 21 10.82 U F52
2021-09-09 07:53:02 C 20 23 26.018 +03 21 22.80 U F52
2021-09-13 07:47:14 C 20 34 56.29 +04 32 44.5 V T05
2021-09-13 07:52:43 C 20 34 56.93 +04 32 47.9 V T05
2021-09-13 08:00:39 C 20 34 57.84 +04 32 53.5 V T05
2021-09-13 08:17:56 C 20 34 59.74 +04 33 05.6 V T05
2021-09-15 03:50:02 C 20 40 16.95 +05 02 02.0 o 691
2021-09-15 04:09:15 C 20 40 19.14 +05 02 13.9 o 691
2021-09-24 19:28:29 C 21 08 27.08 +07 04 56.0 V A17
2021-09-24 19:39:50 C 21 08 28.41 +07 05 00.8 V A17
2021-09-24 19:51:11 C 21 08 29.70 +07 05 05.5 V A17
2021-09-25 04:10:59 C 21 09 30.06 +07 08 44.3 V G96
2021-09-25 04:19:11 C 21 09 30.99 +07 08 47.8 V G96
2021-09-25 04:27:23 C 21 09 31.90 +07 08 50.5 V G96
2021-09-25 05:56:33 C 21 09 43.409 +07 09 33.71 U F52
2021-09-25 06:20:32 C 21 09 46.134 +07 09 43.88 U F52
2021-09-25 06:36:08 C 21 09 47.901 +07 09 50.42 U F52
2021-09-25 06:51:46 C 21 09 49.669 +07 09 56.97 U F52
2021-09-28 05:02:42 C 21 18 16.53 +07 37 14.1 U I41
2021-09-28 06:04:07 C 21 18 23.52 +07 37 36.1 U I41
2021-09-28 06:56:13 C 21 18 29.43 +07 37 54.8 U I41
2021-09-28 07:38:29 C 21 18 35.17 +07 38 15.7 V T08
2021-09-28 08:01:12 C 21 18 37.77 +07 38 24.5 V T08
2021-09-28 08:20:19 C 21 18 39.86 +07 38 31.3 V T08
2021-09-28 08:41:59 C 21 18 42.32 +07 38 41.0 V T08
2021-09-30 05:09:43 C 21 24 01.83 +07 53 55.2 U I41
2021-09-30 05:40:25 C 21 24 05.31 +07 54 05.2 U I41
2021-10-03 08:33:25 C 21 32 58.10 +08 17 05.8 V T05
2021-10-03 08:38:02 C 21 32 58.62 +08 17 06.8 V T05
2021-10-03 08:53:14 C 21 33 00.26 +08 17 10.9 V T05
2021-10-03 09:01:10 C 21 33 01.16 +08 17 13.3 V T05
2021-10-04 13:14:18 C 21 36 21.09 +08 24 54.3 V D29
2021-10-04 13:34:40 C 21 36 23.37 +08 25 00.4 V D29