2021 UL9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6961634103 ± 2.59e-06
Semi-major axis (a)2.7344685101 AU ± 2.15e-05
Inclination (i)12.77396680° ± 6.73e-05
Long. of Asc. Node (Ω)357.01583474° ± 3.48e-05
Arg. of Perihelion (ω)103.66324626° ± 4.04e-05
Mean Anomaly (M)308.24751405° ± 3.64e-03
Mean Motion (n)0.2179730929°/day ± 2.58e-06
Perihelion dist (q)0.83083159 AU ± 9.65e-06
Aphelion dist (Q)4.63810543 AU ± 3.72e-05
Orbital Period4.52177959 yr ± 5.34e-05
Physical Parameters
H (abs. magnitude)21.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.265″
Uncertainty1
Orbit TypeApollo
MOID0.080117 AU
Observations Used50
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-31
Last Observation Used2022-03-12
Observations (52)
Date Type RA Dec Mag Band Observatory
2021-10-31 04:56:38 C 22 08 45.295 +02 17 55.40 U F52
2021-10-31 05:12:22 C 22 08 43.867 +02 18 02.47 U F52
2021-10-31 05:28:08 C 22 08 42.428 +02 18 09.62 U F52
2021-10-31 05:43:56 C 22 08 40.981 +02 18 16.91 U F52
2021-10-31 08:46:03 C 22 08 24.541 +02 19 39.44 V F51
2021-10-31 08:46:59 C 22 08 24.468 +02 19 39.91 V F51
2021-11-01 01:29:11 C 22 07 00.09 +02 27 16.2 u H21
2021-11-01 01:37:57 C 22 06 59.32 +02 27 20.4 u H21
2021-11-03 00:54:18 C 22 03 06.39 +02 50 00.4 u H21
2021-11-03 01:03:22 C 22 03 05.63 +02 50 04.5 u H21
2021-11-03 01:05:53 C 22 03 05.09 +02 50 26.3 V 807
2021-11-03 01:11:54 C 22 03 04.58 +02 50 29.2 V 807
2021-11-03 01:12:07 C 22 03 04.91 +02 50 09.0 u H21
2021-11-03 01:17:14 C 22 03 04.14 +02 50 32.0 V 807
2021-11-03 01:47:06 C 22 03 02.33 +02 50 27.5 V I52
2021-11-03 01:56:43 C 22 03 01.57 +02 50 32.6 V I52
2021-11-03 02:21:02 C 22 02 59.48 +02 50 43.8 V I52
2021-11-09 06:10:38 C 21 52 05.195 +04 10 38.98 V T12
2021-11-09 06:16:23 C 21 52 04.786 +04 10 42.34 V T12
2021-11-09 06:21:50 C 21 52 04.398 +04 10 45.54 V T12
2021-11-12 02:41:31 C 21 47 38.23 +04 52 18.5 V V06
2021-11-12 02:51:49 C 21 47 37.56 +04 52 25.7 V V06
2021-11-30 03:00:14 C 21 24 54.89 +10 27 56.4 V V06
2021-11-30 03:03:40 C 21 24 54.70 +10 28 00.0 V V06
2021-11-30 03:07:06 C 21 24 54.46 +10 28 03.1 V V06
2021-11-30 03:10:32 C 21 24 54.24 +10 28 07.2 V V06
2021-12-03 02:49:36 C 21 21 16.99 +11 35 58.7 V V06
2021-12-03 02:58:45 C 21 21 16.47 +11 36 07.2 V V06
2021-12-03 03:07:54 C 21 21 15.98 +11 36 16.5 V V06
2021-12-03 03:17:02 C 21 21 15.46 +11 36 24.9 V V06
2022-02-06 16:06:42 C 16 10 23.732 +04 15 25.85 V T12
2022-02-08 11:17:38 C 16 02 06.13 +02 39 21.1 V I52
2022-02-08 11:24:21 C 16 02 04.77 +02 39 06.0 V I52
2022-02-08 11:26:52 C 16 02 04.30 +02 39 00.9 V I52
2022-02-08 11:29:23 C 16 02 03.79 +02 38 55.0 V I52
2022-02-24 08:53:33 C 14 56 40.03 -09 05 11.1 V 807
2022-02-24 08:58:03 C 14 56 39.25 -09 05 17.8 V 807
2022-02-24 09:02:32 C 14 56 38.47 -09 05 24.3 V 807
2022-03-02 14:17:16 C 14 32 19.714 -12 20 43.03 U F52
2022-03-02 14:34:38 C 14 32 16.756 -12 21 02.85 U F52
2022-03-02 14:52:02 C 14 32 13.799 -12 21 22.74 U F52
2022-03-02 15:09:24 C 14 32 10.829 -12 21 42.52 U F52
2022-03-09 09:33:29 C 14 06 05.59 -14 59 09.5 V G96
2022-03-09 09:41:48 C 14 06 04.27 -14 59 16.1 V G96
2022-03-09 09:50:06 C 14 06 02.84 -14 59 23.6 V G96
2022-03-09 09:58:24 C 14 06 01.53 -14 59 29.3 V G96
2022-03-09 14:49:27 C 14 05 14.714 -15 03 15.29 V 568
2022-03-09 14:52:05 C 14 05 14.298 -15 03 17.46 V 568
2022-03-09 14:55:03 C 14 05 13.806 -15 03 19.78 V 568
2022-03-12 12:41:41 C 13 54 21.412 -15 53 19.12 U F52