2021 UH9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4861326019 ± 2.11e-05
Semi-major axis (a)1.9111003387 AU ± 7.81e-05
Inclination (i)2.51974954° ± 8.57e-05
Long. of Asc. Node (Ω)74.82798943° ± 2.59e-04
Arg. of Perihelion (ω)352.57139089° ± 2.01e-04
Mean Anomaly (M)183.91072843° ± 3.34e-02
Mean Motion (n)0.3730671780°/day ± 2.29e-05
Perihelion dist (q)0.98205216 AU ± 5.69e-05
Aphelion dist (Q)2.84014852 AU ± 1.23e-04
Orbital Period2.64195389 yr ± 1.62e-04
Physical Parameters
H (abs. magnitude)25.75
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.251″
Uncertainty2
Orbit TypeApollo
MOID0.000836 AU
Observations Used38
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-31
Last Observation Used2022-01-07
Observations (40)
Date Type RA Dec Mag Band Observatory
2021-10-31 12:18:52 C 05 02 12.405 -13 54 53.35 U F52
2021-10-31 12:36:20 C 05 02 28.193 -13 54 25.14 U F52
2021-10-31 12:53:48 C 05 02 44.046 -13 53 56.65 U F52
2021-10-31 13:11:10 C 05 02 59.810 -13 53 27.65 U F52
2021-10-31 15:23:43 C 05 05 00.958 -13 49 37.66 V F51
2021-10-31 15:24:39 C 05 05 01.847 -13 49 35.89 V F51
2021-11-01 00:58:22 C 05 14 32.06 -13 33 48.5 V 033
2021-11-01 00:59:31 C 05 14 33.12 -13 33 46.3 V 033
2021-11-01 01:00:41 C 05 14 34.23 -13 33 44.4 V 033
2021-11-01 09:45:50 C 05 23 14.99 -13 15 54.4 V G96
2021-11-01 09:52:10 C 05 23 20.99 -13 15 40.9 V G96
2021-11-01 11:32:30 C 05 25 06.042 -13 11 34.82 V 568
2021-11-01 11:33:54 C 05 25 07.387 -13 11 31.95 V 568
2021-11-01 11:35:19 C 05 25 08.724 -13 11 29.10 V 568
2021-11-03 08:24:42 C 06 10 55.81 -11 19 45.9 u H21
2021-11-03 08:28:27 C 06 10 59.51 -11 19 35.0 u H21
2021-11-03 08:32:12 C 06 11 03.16 -11 19 23.9 u H21
2021-11-03 10:51:37 C 06 13 24.28 -11 12 21.3 V I52
2021-11-03 10:58:58 C 06 13 31.47 -11 11 59.7 V I52
2021-11-03 11:00:02 C 06 13 32.51 -11 11 56.3 V I52
2021-11-03 11:01:06 C 06 13 33.51 -11 11 53.2 V I52
2021-11-07 11:29:37 C 07 45 31.38 -05 54 07.7 V 291
2021-11-07 11:37:34 C 07 45 37.68 -05 53 40.9 V 291
2021-11-07 11:45:34 C 07 45 44.04 -05 53 14.8 V 291
2021-11-07 15:15:29 C 07 48 37.063 -05 41 04.23 V T12
2021-11-07 15:23:13 C 07 48 43.059 -05 40 38.65 V T12
2021-11-07 15:25:07 C 07 48 44.527 -05 40 32.42 V T12
2021-11-10 03:18:18 C 08 33 03.941 -02 37 16.17 V Z84
2021-11-10 03:54:53 C 08 33 26.490 -02 35 34.72 V Z84
2021-11-10 04:31:21 C 08 33 48.793 -02 33 52.66 V Z84
2021-11-10 11:33:39 C 08 38 19.52 -02 14 18.2 o 291
2021-11-10 11:52:41 C 08 38 30.75 -02 13 26.1 o 291
2021-11-10 12:12:10 C 08 38 42.14 -02 12 33.0 o 291
2021-11-11 11:33:02 C 08 52 40.59 -01 11 58.5 o 291
2021-11-11 11:46:52 C 08 52 47.89 -01 11 25.4 o 291
2021-11-11 12:00:52 C 08 52 55.30 -01 10 50.4 o 291
2021-12-04 08:09:40 C 11 03 46.582 +07 49 45.76 V 309
2021-12-04 08:14:02 C 11 03 46.953 +07 49 47.42 V 309
2022-01-07 10:19:56 C 11 31 47.728 +11 48 35.62 V G37
2022-01-07 10:26:55 C 11 31 47.542 +11 48 38.37 V G37