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
2021-11-04 04:20:17 C 01 47 28.13 +05 33 35.7 V I52
2021-11-04 04:20:32 C 01 47 28.40 +05 33 37.0 V I52
2021-11-04 04:20:46 C 01 47 28.68 +05 33 38.5 V I52
2021-11-04 04:21:00 C 01 47 28.95 +05 33 40.1 V I52
2021-11-04 05:12:38 C 01 48 29.52 +05 39 11.4 o 691
2021-11-04 05:16:44 C 01 48 34.29 +05 39 37.6 o 691
2021-11-04 05:20:49 C 01 48 39.08 +05 40 03.6 o 691
2021-11-04 21:50:06 C 02 12 49.90 +07 33 54.7 Z C95
2021-11-04 21:57:32 C 02 13 01.32 +07 34 52.3 Z C95
2021-11-04 22:00:32 C 02 13 07.59 +07 34 13.9 V Z80
2021-11-04 22:04:55 C 02 13 12.70 +07 35 50.5 Z C95
2021-11-04 22:07:12 C 02 13 18.07 +07 35 04.4 V Z80
2021-11-04 22:13:52 C 02 13 28.41 +07 35 57.0 V Z80
2021-11-05 01:52:52 C 02 19 21.54 +08 04 44.2 V J95
2021-11-05 01:57:59 C 02 19 30.12 +08 05 24.8 V J95
2021-11-05 02:03:37 C 02 19 39.57 +08 06 09.1 V J95
2021-11-05 02:08:44 C 02 19 48.17 +08 06 50.3 V J95
2021-11-05 21:59:04 C 03 01 14.66 +11 05 45.9 V G15
2021-11-05 22:02:28 C 03 01 22.28 +11 06 20.2 V G15
2021-11-05 22:06:04 C 03 01 30.37 +11 06 55.3 V G15
2021-11-05 22:38:00 C 03 02 40.26 +11 11 08.3 V 033
2021-11-05 22:38:24 C 03 02 41.21 +11 11 12.2 V 033
2021-11-05 22:38:49 C 03 02 42.15 +11 11 16.3 V 033
2021-11-05 22:39:17 C 03 02 43.18 +11 11 20.7 V 033
2021-11-06 00:58:51 C 03 08 06.54 +11 34 53.6 V 204
2021-11-06 01:06:12 C 03 08 23.81 +11 36 04.8 V 204
2021-11-06 01:13:37 C 03 08 41.26 +11 37 16.6 V 204
2021-11-06 01:35:33 C 03 09 30.79 +11 40 43.7 X 595
2021-11-06 01:42:02 C 03 09 46.25 +11 41 46.2 X 595
2021-11-06 01:48:48 C 03 10 02.39 +11 42 51.1 X 595
2021-11-06 10:59:22 C 03 34 21.67 +13 17 07.6 V I52
2021-11-06 10:59:36 C 03 34 22.33 +13 17 09.8 V I52
2021-11-06 10:59:51 C 03 34 22.96 +13 17 12.0 V I52
2021-11-06 11:00:05 C 03 34 23.61 +13 17 14.3 V I52
2021-11-06 21:47:41 C 04 07 40.60 +15 00 26.5 V G34
2021-11-06 21:50:32 C 04 07 49.31 +15 00 54.1 V G34
2021-11-06 21:53:23 C 04 07 58.02 +15 01 22.7 V G34
2021-11-06 21:56:14 C 04 08 06.67 +15 01 50.3 V G34
2021-11-07 03:48:39 C 04 26 24.36 +15 55 13.8 V 033
2021-11-07 03:49:04 C 04 26 25.67 +15 55 17.8 V 033
2021-11-07 03:49:28 C 04 26 27.01 +15 55 20.9 V 033
2021-11-07 03:49:58 C 04 26 28.55 +15 55 25.3 V 033
2021-11-07 07:22:09 C 04 39 07.12 +16 30 10.5 V G96
2021-11-07 07:44:17 C 04 40 18.43 +16 33 19.6 V G96
2021-11-07 08:18:58 C 04 42 09.03 +16 38 07.8 V 703
2021-11-07 08:41:37 C 04 43 21.64 +16 41 12.1 V 703
2021-11-07 15:06:38 C 05 04 48.824 +17 30 31.33 V T12
2021-11-07 15:07:00 C 05 04 50.042 +17 30 33.55 V T12
2021-11-07 15:08:48 C 05 04 55.984 +17 30 44.35 V T12
2021-11-08 02:58:42 C 05 46 31.49 +18 27 59.1 V 204