2021 UP4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6048201000
Semi-major axis (a)2.4180053000 AU
Inclination (i)1.49219000°
Long. of Asc. Node (Ω)314.16966000°
Arg. of Perihelion (ω)120.16308000°
Mean Anomaly (M)18.80205000°
Mean Motion (n)0.2621308900°/day
Perihelion dist (q)0.95554710 AU
Aphelion dist (Q)3.88046350 AU
Orbital Period3.75998290 yr
Physical Parameters
H (abs. magnitude)24.14
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.700″
Uncertainty6
Orbit TypeApollo
MOID0.015416 AU
Observations Used28
Oppositions1
Arc Total
First Observation Used
Last Observation Used2022-01-03
Observations (28)
Date Type RA Dec Mag Band Observatory
2021-10-26 05:35:06 C 22 18 23.271 -01 23 41.02 U F51
2021-10-26 05:51:24 C 22 18 21.764 -01 23 40.03 U F51
2021-10-26 06:07:36 C 22 18 20.246 -01 23 38.85 U F51
2021-10-26 09:52:05 C 22 17 59.758 -01 23 22.18 V F51
2021-10-26 09:53:01 C 22 17 59.678 -01 23 21.87 V F51
2021-10-27 00:16:33 C 22 16 54.21 -01 22 27.0 u H21
2021-10-27 00:38:27 C 22 16 52.22 -01 22 25.5 u H21
2021-10-27 00:49:33 C 22 16 51.22 -01 22 24.7 u H21
2021-10-28 04:50:00 C 22 14 34.84 -01 19 37.8 o 691
2021-10-28 05:21:58 C 22 14 31.95 -01 19 35.0 o 691
2021-10-28 05:53:55 C 22 14 29.06 -01 19 30.8 o 691
2021-10-30 05:09:42 C 22 10 42.368 -01 13 21.55 V F51
2021-10-30 05:26:29 C 22 10 40.751 -01 13 19.25 V F51
2021-10-30 05:43:17 C 22 10 39.150 -01 13 16.60 V F51
2021-10-30 06:00:06 C 22 10 37.529 -01 13 14.25 V F51
2021-11-09 06:35:31 C 21 48 58.348 -00 06 11.32 V T12
2021-11-11 01:28:31 C 21 44 18.88 +00 14 01.1 V V06
2021-11-11 01:34:14 C 21 44 18.11 +00 14 04.3 V V06
2021-11-11 01:39:57 C 21 44 17.35 +00 14 07.2 V V06
2021-11-11 01:45:40 C 21 44 16.59 +00 14 10.2 V V06
2021-11-12 01:28:36 C 21 41 28.71 +00 26 58.0 V V06
2021-11-12 01:36:37 C 21 41 27.59 +00 27 02.7 V V06
2021-11-12 01:44:38 C 21 41 26.45 +00 27 06.8 V V06
2021-11-12 01:52:39 C 21 41 25.31 +00 27 11.3 V V06
2022-01-03 10:56:08 C 11 54 23.46 +05 28 49.6 V V06
2022-01-03 11:01:52 C 11 54 22.91 +05 28 48.3 V V06
2022-01-03 11:07:35 C 11 54 22.28 +05 28 46.5 V V06
2022-01-03 11:13:18 C 11 54 21.71 +05 28 45.2 V V06