2021 JH9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6515284676 ± 3.02e-05
Semi-major axis (a)1.7430710645 AU ± 1.47e-04
Inclination (i)31.66086775° ± 1.93e-03
Long. of Asc. Node (Ω)187.95368881° ± 1.84e-03
Arg. of Perihelion (ω)160.64997317° ± 2.38e-03
Mean Anomaly (M)314.09152632° ± 8.51e-02
Mean Motion (n)0.4282916780°/day ± 5.42e-05
Perihelion dist (q)0.60741064 AU ± 7.35e-05
Aphelion dist (Q)2.87873148 AU ± 2.48e-04
Orbital Period2.30129684 yr ± 2.91e-04
Physical Parameters
H (abs. magnitude)20.45
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.172″
Uncertainty2
Orbit TypeApollo
MOID0.361737 AU
Observations Used36
Oppositions1
Arc Total2021-2021
First Observation Used2021-05-03
Last Observation Used2021-06-11
Observations (36)
Date Type RA Dec Mag Band Observatory
2021-05-03 09:08:35 C 16 39 14.89 +35 51 52.7 V G96
2021-05-03 09:16:05 C 16 39 14.85 +35 52 15.0 V G96
2021-05-15 08:35:49 C 16 34 52.16 +50 11 57.3 V G96
2021-05-15 08:44:59 C 16 34 51.83 +50 12 24.8 V G96
2021-05-15 08:53:23 C 16 34 51.52 +50 12 50.6 V G96
2021-05-15 09:01:17 C 16 34 51.27 +50 13 14.7 V G96
2021-05-15 10:33:18 C 16 34 47.85 +50 17 53.9 V I52
2021-05-15 10:39:21 C 16 34 47.69 +50 18 12.4 V I52
2021-05-15 10:45:25 C 16 34 47.45 +50 18 30.2 V I52
2021-05-15 10:51:28 C 16 34 47.25 +50 18 49.0 V I52
2021-05-15 21:42:50 C 16 34 28.23 +50 51 50.2 V 033
2021-05-15 21:47:35 C 16 34 28.08 +50 52 03.9 V 033
2021-05-15 21:52:19 C 16 34 27.88 +50 52 18.8 V 033
2021-05-16 01:51:28 C 16 34 19.600 +51 04 35.69 V J04
2021-05-16 02:07:10 C 16 34 18.989 +51 05 23.27 V J04
2021-05-16 02:22:48 C 16 34 18.361 +51 06 11.24 V J04
2021-05-16 06:16:30 C 16 34 11.41 +51 18 00.9 V H01
2021-05-16 06:24:58 C 16 34 11.09 +51 18 26.8 V H01
2021-05-16 06:36:49 C 16 34 10.63 +51 19 03.1 V H01
2021-05-16 06:46:29 C 16 34 10.25 +51 19 32.8 V H01
2021-05-17 05:58:57 C 16 33 21.88 +52 30 13.2 V H01
2021-05-17 06:11:20 C 16 33 21.35 +52 30 51.3 V H01
2021-05-17 06:22:30 C 16 33 20.88 +52 31 25.5 V H01
2021-05-17 06:31:09 C 16 33 20.51 +52 31 51.8 V H01
2021-05-17 06:43:43 C 16 33 20.06 +52 32 30.6 V I52
2021-05-17 06:53:18 C 16 33 19.66 +52 32 59.9 V I52
2021-05-17 07:01:08 C 16 33 19.32 +52 33 23.5 V I52
2021-05-17 07:05:59 C 16 33 19.13 +52 33 38.8 V I52
2021-05-24 10:04:12 C 16 24 35.36 +61 08 06.7 V I52
2021-05-24 10:12:05 C 16 24 34.78 +61 08 30.3 V I52
2021-05-24 10:19:58 C 16 24 34.16 +61 08 53.6 V I52
2021-06-01 07:47:56 C 16 05 44.68 +70 15 03.9 V I52
2021-06-01 08:09:16 C 16 05 41.33 +70 16 03.4 V I52
2021-06-11 22:56:15 C 14 43 33.28 +81 20 43.2 V J04
2021-06-11 23:24:10 C 14 43 12.84 +81 21 47.0 V J04
2021-06-11 23:51:40 C 14 42 52.76 +81 22 50.3 V J04