IAA RAS IAA Minor Planet Database

2021 JL4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3613908416 ± 9.24e-08
Semi-major axis (a)1.1025274675 AU ± 3.37e-08
Inclination (i)4.69046285° ± 6.04e-06
Long. of Asc. Node (Ω)233.99182942° ± 1.44e-05
Arg. of Perihelion (ω)105.23766752° ± 1.52e-05
Mean Anomaly (M)257.34576977° ± 5.28e-05
Mean Motion (n)0.8513892244°/day ± 3.90e-08
Perihelion dist (q)0.70408414 AU ± 1.04e-07
Aphelion dist (Q)1.50097080 AU ± 1.12e-07
Orbital Period1.15766826 yr ± 5.30e-08
Physical Parameters
H (abs. magnitude)23.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.257″
Uncertainty0
Orbit TypeApollo
MOID0.009428 AU
Observations Used50
Oppositions1
Arc Total2021-2022
First Observation Used2021-05-09
Last Observation Used2022-12-15
Observations (50)
Date Type RA Dec Mag Band Observatory
2021-05-09 08:24:12 C 12 50 31.300 -12 06 20.73 – U F51
2021-05-09 08:43:00 C 12 50 26.245 -12 05 31.57 – U F51
2021-05-09 09:01:49 C 12 50 21.159 -12 04 42.02 – U F51
2021-05-09 19:53:37 C 12 47 37.72 -11 36 14.9 – V L01
2021-05-09 19:56:06 C 12 47 37.04 -11 36 08.8 – V L01
2021-05-09 20:02:21 C 12 47 35.41 -11 35 52.1 – V L01
2021-05-09 20:06:33 C 12 47 34.26 -11 35 41.0 – V L01
2021-05-10 02:23:32 C 12 45 58.17 -11 18 39.2 – u H21
2021-05-10 02:34:29 C 12 45 55.18 -11 18 09.3 – u H21
2021-05-10 02:45:19 C 12 45 52.31 -11 17 40.0 – u H21
2021-05-10 03:24:56 C 12 45 42.99 -11 15 46.4 – V I52
2021-05-10 03:26:44 C 12 45 42.49 -11 15 41.0 – V I52
2021-05-10 03:28:34 C 12 45 41.98 -11 15 36.3 – V I52
2021-05-10 03:30:22 C 12 45 41.49 -11 15 31.4 – V I52
2021-05-11 05:48:22 C 12 38 46.78 -10 01 51.1 – V I52
2021-05-11 05:49:47 C 12 38 46.37 -10 01 46.9 – V I52
2021-05-11 05:51:12 C 12 38 45.99 -10 01 42.4 – V I52
2021-05-11 05:52:38 C 12 38 45.59 -10 01 39.1 – V I52
2021-05-11 06:47:57 C 12 38 30.04 -09 58 58.5 – V G96
2021-05-11 06:55:19 C 12 38 27.97 -09 58 37.3 – V G96
2021-05-11 07:02:41 C 12 38 25.93 -09 58 15.7 – V G96
2021-05-12 04:27:14 C 12 32 42.95 -08 55 11.0 – V I52
2021-05-12 04:28:39 C 12 32 42.52 -08 55 07.2 – V I52
2021-05-12 04:30:04 C 12 32 42.10 -08 55 02.7 – V I52
2021-05-12 04:31:29 C 12 32 41.72 -08 54 58.5 – V I52
2021-05-13 07:25:47 C 12 25 16.208 -07 31 44.38 – U F51
2021-05-13 08:18:28 C 12 25 00.441 -07 28 57.45 – U F51
2021-05-13 08:51:57 C 12 24 52.78 -07 25 56.7 – V 474
2021-05-13 08:53:40 C 12 24 52.23 -07 25 51.1 – V 474
2021-05-13 08:55:24 C 12 24 51.74 -07 25 45.5 – V 474
2021-05-13 08:57:07 C 12 24 51.23 -07 25 40.3 – V 474
2021-05-17 01:34:09 C 11 58 54.51 -02 24 03.2 – u 807
2021-05-17 01:41:50 C 11 58 52.01 -02 23 35.4 – u 807
2021-05-17 01:49:31 C 11 58 49.52 -02 23 07.8 – u 807
2021-05-17 06:15:40 C 11 57 26.58 -02 08 17.0 – o 691
2021-05-17 06:21:48 C 11 57 24.63 -02 07 54.9 – o 691
2021-05-17 06:27:56 C 11 57 22.62 -02 07 32.3 – o 691
2021-05-25 04:04:14 C 10 55 06.20 +10 17 33.8 – V I52
2021-05-25 04:09:09 C 10 55 04.39 +10 17 53.5 – V I52
2021-05-29 03:50:09 C 10 20 44.15 +16 39 00.8 – V I52
2021-05-29 04:11:02 C 10 20 36.14 +16 40 21.0 – V I52
2021-05-29 04:17:04 C 10 20 33.84 +16 40 43.7 – V I52
2021-05-29 04:23:07 C 10 20 31.47 +16 41 06.3 – V I52
2022-12-01 11:52:48 C 10 23 10.367 -09 52 46.96 – V I52
2022-12-01 11:54:50 C 10 23 09.139 -09 52 45.77 – V I52
2022-12-01 11:56:53 C 10 23 07.868 -09 52 42.78 – V I52
2022-12-01 11:58:55 C 10 23 06.580 -09 52 41.34 – V I52
2022-12-15 02:02:44 C 07 45 09.845 -03 16 51.02 – V J95
2022-12-15 02:27:12 C 07 45 00.938 -03 16 21.76 – V J95
2022-12-15 02:53:03 C 07 44 51.614 -03 15 50.62 – V J95