IAA RAS IAA Minor Planet Database

2021 UJ9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4248953384 ± 1.38e-05
Semi-major axis (a)1.7487615168 AU ± 4.32e-05
Inclination (i)5.30580806° ± 1.54e-04
Long. of Asc. Node (Ω)215.73059829° ± 1.85e-05
Arg. of Perihelion (ω)241.48403147° ± 2.37e-05
Mean Anomaly (M)247.05100477° ± 2.24e-02
Mean Motion (n)0.4262028944°/day ± 1.58e-05
Perihelion dist (q)1.00572090 AU ± 3.46e-05
Aphelion dist (Q)2.49180213 AU ± 6.60e-05
Orbital Period2.31257529 yr ± 8.56e-05
Physical Parameters
H (abs. magnitude)24.40
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.209″
Uncertainty2
Orbit TypeApollo
MOID0.072531 AU
Observations Used42
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-31
Last Observation Used2022-01-27
Observations (46)
Date Type RA Dec Mag Band Observatory
2021-10-31 07:44:18 C 02 13 07.200 +12 27 17.65 – U F51
2021-10-31 08:00:05 C 02 13 07.375 +12 26 58.34 – U F51
2021-10-31 08:15:53 C 02 13 07.526 +12 26 39.17 – U F51
2021-10-31 08:31:42 C 02 13 07.688 +12 26 19.80 – U F51
2021-10-31 10:53:50 C 02 13 08.979 +12 23 23.50 – V F51
2021-10-31 10:54:45 C 02 13 08.987 +12 23 22.35 – V F51
2021-10-31 19:32:18 C 02 13 22.68 +12 12 06.8 – V 033
2021-10-31 19:37:27 C 02 13 22.71 +12 12 00.7 – V 033
2021-10-31 19:42:37 C 02 13 22.86 +12 11 54.1 – V 033
2021-11-01 10:17:33 C 02 13 39.21 +11 53 19.6 – o 691
2021-11-01 10:31:57 C 02 13 39.45 +11 53 00.7 – o 691
2021-11-01 10:46:21 C 02 13 39.66 +11 52 41.2 – o 691
2021-11-03 04:27:25 C 02 14 43.95 +10 55 42.6 – u H21
2021-11-03 04:39:30 C 02 14 44.11 +10 55 25.6 – u H21
2021-11-03 09:19:02 C 02 14 49.64 +10 48 47.8 – V 673
2021-11-03 10:00:34 C 02 14 50.31 +10 47 48.0 – V 673
2021-11-07 09:57:07 C 02 17 47.232 +08 16 10.04 – U F51
2021-11-07 10:14:12 C 02 17 47.566 +08 15 40.07 – U F51
2021-11-07 10:31:15 C 02 17 47.905 +08 15 10.40 – U F51
2021-11-07 10:48:13 C 02 17 48.243 +08 14 40.84 – U F51
2021-11-09 06:23:20 C 02 19 28.52 +06 55 44.5 – V G96
2021-11-09 06:30:52 C 02 19 28.68 +06 55 30.0 – V G96
2021-11-09 06:38:24 C 02 19 28.89 +06 55 16.0 – V G96
2021-11-09 06:45:55 C 02 19 29.09 +06 55 01.5 – V G96
2021-11-10 11:44:02 C 02 20 41.311 +05 59 12.79 – U F51
2021-11-10 12:00:32 C 02 20 41.825 +05 58 39.82 – U F51
2021-11-10 12:32:29 C 02 20 42.852 +05 57 35.81 – U F51
2021-11-13 08:39:33 C 02 24 08.40 +03 33 26.0 – o 291
2021-11-13 08:42:24 C 02 24 08.53 +03 33 19.4 – o 291
2021-11-13 08:45:14 C 02 24 08.67 +03 33 13.1 – o 291
2021-11-14 04:20:09 C 02 25 20.47 +02 48 28.9 – V G96
2021-11-14 04:30:25 C 02 25 20.92 +02 48 05.1 – V G96
2021-11-14 04:40:39 C 02 25 21.41 +02 47 40.9 – V G96
2021-11-14 04:50:54 C 02 25 21.85 +02 47 17.3 – V G96
2021-11-27 04:28:12 C 02 56 30.37 -13 01 57.7 – u 807
2021-11-27 04:37:06 C 02 56 31.58 -13 02 32.5 – u 807
2021-11-27 04:46:11 C 02 56 32.75 -13 03 06.9 – u 807
2021-11-28 10:29:22 C 03 01 19.438 -15 00 41.28 – U F51
2021-11-28 10:46:39 C 03 01 21.921 -15 01 49.37 – U F51
2021-11-28 11:04:02 C 03 01 24.430 -15 02 57.98 – U F51
2021-12-12 03:05:26 C 04 32 27.64 -38 56 55.0 – u 807
2021-12-12 03:07:41 C 04 32 28.50 -38 57 04.5 – u 807
2021-12-12 03:09:57 C 04 32 29.32 -38 57 14.0 – u 807
2022-01-27 04:26:35 C 10 35 11.62 -36 59 37.9 – V 807
2022-01-27 04:39:52 C 10 35 12.36 -36 59 19.9 – V 807
2022-01-27 04:53:11 C 10 35 13.06 -36 59 00.3 – V 807