2021 UG9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4387125945 ± 2.64e-04
Semi-major axis (a)1.9942715562 AU ± 1.04e-03
Inclination (i)9.31699329° ± 4.04e-03
Long. of Asc. Node (Ω)207.21829777° ± 5.11e-04
Arg. of Perihelion (ω)170.78833448° ± 2.68e-03
Mean Anomaly (M)165.00145647° ± 4.11e-01
Mean Motion (n)0.3499740421°/day ± 2.73e-04
Perihelion dist (q)1.11935951 AU ± 7.86e-04
Aphelion dist (Q)2.86918360 AU ± 1.58e-03
Orbital Period2.81628397 yr ± 2.20e-03
Physical Parameters
H (abs. magnitude)24.95
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.132″
Uncertainty3
Orbit TypeAmor
MOID0.122209 AU
Observations Used22
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-30
Last Observation Used2021-11-11
Observations (22)
Date Type RA Dec Mag Band Observatory
2021-10-30 08:20:40 C 02 00 14.822 +00 44 02.00 V F52
2021-10-30 08:37:06 C 02 00 17.526 +00 43 32.85 V F52
2021-10-30 09:15:00 C 02 00 23.703 +00 42 25.89 U F51
2021-10-30 09:44:57 C 02 00 28.577 +00 41 32.54 U F51
2021-10-30 10:03:13 C 02 00 31.534 +00 41 00.37 U F51
2021-10-30 10:21:26 C 02 00 34.516 +00 40 27.96 U F51
2021-10-30 12:03:54 C 02 00 51.256 +00 37 27.08 V F51
2021-10-30 12:04:50 C 02 00 51.394 +00 37 25.44 V F51
2021-10-30 12:32:37 C 02 00 55.994 +00 36 36.26 V F51
2021-10-30 12:33:32 C 02 00 56.140 +00 36 34.90 V F51
2021-10-30 12:34:28 C 02 00 56.288 +00 36 33.24 V F51
2021-10-30 13:07:56 C 02 01 01.868 +00 35 34.29 V F51
2021-10-30 13:08:51 C 02 01 02.023 +00 35 32.73 V F51
2021-10-31 02:56:11 C 02 03 31.64 +00 12 28.8 V 807
2021-10-31 03:01:29 C 02 03 32.50 +00 12 19.8 V 807
2021-10-31 03:06:48 C 02 03 33.35 +00 12 10.7 V 807
2021-11-03 07:15:40 C 02 16 05.36 -01 48 27.7 o 291
2021-11-03 07:28:36 C 02 16 07.23 -01 48 45.7 o 291
2021-11-03 07:41:33 C 02 16 09.05 -01 49 04.3 o 291
2021-11-11 08:37:54 C 02 42 05.904 -05 21 00.02 U F51
2021-11-11 08:56:09 C 02 42 07.792 -05 21 14.68 U F51
2021-11-11 09:14:37 C 02 42 09.704 -05 21 29.21 U F51