2021 UC4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5027053595 ± 1.61e-04
Semi-major axis (a)2.3866834015 AU ± 8.81e-04
Inclination (i)2.92246506° ± 7.04e-04
Long. of Asc. Node (Ω)23.86200107° ± 1.83e-03
Arg. of Perihelion (ω)25.25828071° ± 3.46e-03
Mean Anomaly (M)34.09862471° ± 2.17e-01
Mean Motion (n)0.2673129859°/day ± 1.48e-04
Perihelion dist (q)1.18688486 AU ± 5.84e-04
Aphelion dist (Q)3.58648194 AU ± 1.38e-03
Orbital Period3.68716200 yr ± 2.04e-03
Physical Parameters
H (abs. magnitude)23.51
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.318″
Uncertainty3
Orbit TypeAmor
MOID0.196588 AU
Observations Used36
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-28
Last Observation Used2021-12-13
Observations (38)
Date Type RA Dec Mag Band Observatory
2021-10-28 09:25:19 C 04 09 13.196 +25 28 40.70 V F52
2021-10-28 09:59:32 C 04 09 15.03 +25 29 09.6 V V00
2021-10-28 10:06:33 C 04 09 15.80 +25 29 16.4 V V00
2021-10-28 10:13:32 C 04 09 16.57 +25 29 23.1 V V00
2021-10-28 10:14:37 C 04 09 18.672 +25 29 30.72 V F52
2021-10-28 10:20:32 C 04 09 17.37 +25 29 29.6 V V00
2021-10-29 01:01:26 C 04 11 04.11 +25 43 34.8 V 033
2021-10-29 01:06:36 C 04 11 04.67 +25 43 39.7 V 033
2021-10-29 01:11:45 C 04 11 05.26 +25 43 44.3 V 033
2021-10-29 04:41:50 C 04 11 32.85 +25 47 12.4 o 691
2021-10-29 04:54:18 C 04 11 34.28 +25 47 23.7 o 691
2021-10-29 05:06:47 C 04 11 35.71 +25 47 37.0 o 691
2021-10-29 06:47:36 C 04 11 47.10 +25 49 18.6 V I52
2021-10-29 06:54:14 C 04 11 47.87 +25 49 24.8 V I52
2021-10-29 07:00:52 C 04 11 48.60 +25 49 31.8 V I52
2021-10-29 07:07:30 C 04 11 49.28 +25 49 38.9 V I52
2021-10-30 00:53:06 C 04 13 55.49 +26 06 32.3 V 033
2021-10-30 00:58:15 C 04 13 56.07 +26 06 37.4 V 033
2021-10-30 01:03:25 C 04 13 56.65 +26 06 41.8 V 033
2021-10-30 01:08:45 C 04 13 57.25 +26 06 47.4 V 033
2021-10-30 06:41:57 C 04 14 38.48 +26 12 15.5 o 291
2021-10-30 06:49:56 C 04 14 39.37 +26 12 22.9 o 291
2021-10-30 06:57:54 C 04 14 40.19 +26 12 31.0 o 291
2021-10-30 10:29:44 C 04 15 03.22 +26 15 53.5 V I52
2021-10-30 10:38:56 C 04 15 04.19 +26 16 01.8 V I52
2021-11-11 07:17:21 C 04 46 23.64 +30 17 41.3 V V06
2021-11-11 07:18:30 C 04 46 23.80 +30 17 41.6 V V06
2021-11-11 07:19:38 C 04 46 23.86 +30 17 42.8 V V06
2021-11-11 07:20:47 C 04 46 23.95 +30 17 44.0 V V06
2021-11-12 08:17:28 C 04 48 49.59 +30 35 37.9 V V06
2021-11-12 08:23:48 C 04 48 50.19 +30 35 41.9 V V06
2021-11-12 08:30:05 C 04 48 50.76 +30 35 46.0 V V06
2021-12-01 08:20:11 C 05 22 01.37 +34 10 19.1 V I52
2021-12-01 08:30:04 C 05 22 01.79 +34 10 21.6 V I52
2021-12-13 07:59:06 C 05 32 50.19 +34 41 51.2 V V06
2021-12-13 08:07:36 C 05 32 50.35 +34 41 50.2 V V06
2021-12-13 08:24:03 C 05 32 50.66 +34 41 50.5 V V06
2021-12-13 08:54:20 C 05 32 51.26 +34 41 50.0 V V06