2021 UF4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4352680488 ± 1.19e-05
Semi-major axis (a)1.7387400548 AU ± 3.65e-05
Inclination (i)0.41523253° ± 8.57e-06
Long. of Asc. Node (Ω)53.35467277° ± 6.57e-05
Arg. of Perihelion (ω)11.71926225° ± 8.33e-05
Mean Anomaly (M)266.78019083° ± 1.97e-02
Mean Motion (n)0.4298929151°/day ± 1.35e-05
Perihelion dist (q)0.98192206 AU ± 2.92e-05
Aphelion dist (Q)2.49555805 AU ± 5.63e-05
Orbital Period2.29272512 yr ± 7.22e-05
Physical Parameters
H (abs. magnitude)27.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.279″
Uncertainty2
Orbit TypeApollo
MOID0.000256 AU
Observations Used106
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-29
Last Observation Used2021-12-16
Observations (114)
Date Type RA Dec Mag Band Observatory
2021-10-29 05:29:27 C 00 23 27.12 -01 28 23.1 V G96
2021-10-29 05:36:59 C 00 23 28.58 -01 28 13.4 V G96
2021-10-29 05:44:31 C 00 23 30.03 -01 28 03.9 V G96
2021-10-29 05:52:05 C 00 23 31.52 -01 27 54.1 V G96
2021-10-29 07:05:48 C 00 23 45.43 -01 26 25.4 V H01
2021-10-29 07:14:31 C 00 23 47.23 -01 26 14.3 V H01
2021-10-29 07:27:50 C 00 23 49.99 -01 25 57.2 V H01
2021-10-29 07:36:44 C 00 23 51.87 -01 25 45.7 V H01
2021-10-29 08:06:22 C 00 23 58.74 -01 25 02.2 V I52
2021-10-29 08:11:52 C 00 23 59.79 -01 24 54.6 V I52
2021-10-29 08:14:17 C 00 24 00.28 -01 24 51.6 V I52
2021-10-29 08:16:42 C 00 24 00.77 -01 24 49.2 V I52
2021-10-29 21:53:44 C 00 27 52.88 -01 07 07.4 V 033
2021-10-29 21:55:03 C 00 27 53.26 -01 07 05.8 V 033
2021-10-29 21:56:23 C 00 27 53.59 -01 07 03.2 V 033
2021-10-29 21:57:49 C 00 27 53.94 -01 07 01.9 V 033
2021-10-29 22:30:46 C 00 28 01.20 -01 05 55.5 V L01
2021-10-29 22:34:08 C 00 28 02.03 -01 05 50.8 V L01
2021-10-29 22:37:30 C 00 28 02.81 -01 05 46.3 V L01
2021-10-30 01:28:56 C 00 29 03.45 -00 56 13.1 u 807
2021-10-30 01:34:54 C 00 29 04.87 -00 56 04.2 u 807
2021-10-30 01:40:54 C 00 29 06.24 -00 55 55.4 u 807
2021-10-30 02:49:41 C 00 29 31.19 -00 58 51.2 X 858
2021-10-30 03:01:13 C 00 29 34.13 -00 58 34.4 X 858
2021-10-30 03:29:07 C 00 29 42.39 -00 57 41.1 V I52
2021-10-30 03:30:55 C 00 29 42.86 -00 57 38.4 V I52
2021-10-30 03:36:19 C 00 29 44.19 -00 57 29.4 V I52
2021-10-30 05:13:32 C 00 30 04.70 -00 55 23.4 V 734
2021-10-30 05:25:30 C 00 30 07.63 -00 55 04.9 V 734
2021-10-30 05:37:25 C 00 30 10.71 -00 54 44.3 V 734
2021-10-30 06:30:04 C 00 30 29.08 -00 53 05.5 V 654
2021-10-30 06:54:20 C 00 30 45.779 -00 51 30.10 U F51
2021-10-30 07:10:04 C 00 30 39.25 -00 52 01.6 V 654
2021-10-30 07:12:42 C 00 30 50.322 -00 51 00.96 U F51
2021-10-30 07:31:06 C 00 30 54.900 -00 50 31.42 U F51
2021-10-30 07:49:43 C 00 30 59.512 -00 50 01.41 U F51
2021-10-30 07:55:12 C 00 30 51.01 -00 50 48.8 V 654
2021-10-31 04:36:45 C 00 38 22.21 -00 13 36.3 o 691
2021-10-31 04:49:55 C 00 38 26.44 -00 13 10.5 o 691
2021-10-31 05:03:05 C 00 38 30.69 -00 12 44.2 o 691
2021-10-31 18:53:56 C 00 44 27.88 +00 15 38.9 V 033
2021-10-31 18:55:05 C 00 44 28.33 +00 15 41.6 V 033
2021-10-31 18:56:15 C 00 44 28.81 +00 15 44.2 V 033
2021-11-01 05:12:01 C 00 49 18.31 +00 42 06.7 V I52
2021-11-01 05:12:22 C 00 49 18.44 +00 42 08.0 V I52
2021-11-01 05:16:13 C 00 49 20.07 +00 42 17.8 V I52
2021-11-01 05:16:34 C 00 49 20.25 +00 42 18.6 V I52
2021-11-03 04:13:24 C 01 21 28.36 +03 24 42.7 o 691
2021-11-03 04:16:20 C 01 21 30.70 +03 24 55.9 o 691
2021-11-03 04:19:16 C 01 21 33.08 +03 25 09.2 o 691