IAA RAS IAA Minor Planet Database

2021 UL1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2077685450 ± 2.46e-05
Semi-major axis (a)1.2714173344 AU ± 4.35e-05
Inclination (i)10.38618979° ± 1.08e-03
Long. of Asc. Node (Ω)220.07109970° ± 2.23e-04
Arg. of Perihelion (ω)220.44849773° ± 6.51e-04
Mean Anomaly (M)268.74366395° ± 5.03e-02
Mean Motion (n)0.6875116849°/day ± 3.53e-05
Perihelion dist (q)1.00725680 AU ± 4.65e-05
Aphelion dist (Q)1.53557786 AU ± 6.11e-05
Orbital Period1.43361386 yr ± 7.36e-05
Physical Parameters
H (abs. magnitude)24.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.318″
Uncertainty2
Orbit TypeApollo
MOID0.050265 AU
Observations Used49
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-14
Last Observation Used2021-12-02
Observations (49)
Date Type RA Dec Mag Band Observatory
2021-10-14 09:27:15 C 23 44 16.319 +34 58 50.14 – V F52
2021-10-14 09:41:54 C 23 44 16.236 +34 58 23.41 – V F52
2021-10-14 10:11:10 C 23 44 16.079 +34 57 29.55 – V F52
2021-10-14 12:42:24 C 23 44 16.077 +34 52 41.70 – V F51
2021-10-21 08:56:13 C 23 49 21.875 +28 33 56.44 – V F52
2021-10-21 09:27:29 C 23 49 22.494 +28 32 25.18 – V F52
2021-10-21 09:43:07 C 23 49 22.832 +28 31 39.34 – V F52
2021-10-26 03:18:54 C 23 56 02.88 +22 09 26.7 – V G96
2021-10-26 03:27:05 C 23 56 03.29 +22 08 54.8 – V G96
2021-10-26 03:35:15 C 23 56 03.67 +22 08 24.0 – V G96
2021-10-26 03:43:26 C 23 56 04.05 +22 07 52.4 – V G96
2021-10-26 05:38:13 C 23 56 09.29 +22 00 28.1 – V V06
2021-10-26 05:40:09 C 23 56 09.38 +22 00 20.4 – V V06
2021-10-26 05:41:32 C 23 56 14.268 +22 00 28.96 – U F52
2021-10-26 05:42:05 C 23 56 09.45 +22 00 12.8 – V V06
2021-10-26 05:44:01 C 23 56 09.56 +22 00 05.3 – V V06
2021-10-26 06:16:37 C 23 56 15.925 +21 58 14.85 – U F52
2021-10-26 06:34:27 C 23 56 16.737 +21 57 06.41 – U F52
2021-10-26 21:25:21 C 23 57 18.72 +20 57 26.6 – V L01
2021-10-26 21:28:28 C 23 57 18.91 +20 57 14.1 – V L01
2021-10-26 21:31:35 C 23 57 19.11 +20 57 00.6 – V L01
2021-10-26 21:34:50 C 23 57 19.25 +20 56 46.9 – V L01
2021-10-26 21:37:36 C 23 57 19.40 +20 56 35.4 – V L01
2021-10-27 00:19:08 C 23 57 36.77 +20 45 41.1 – u H21
2021-10-27 00:23:09 C 23 57 37.07 +20 45 25.0 – u H21
2021-10-27 00:28:23 C 23 57 37.38 +20 45 04.1 – u H21
2021-10-29 02:39:52 C 00 01 44.70 +17 08 06.6 – V I52
2021-10-29 02:42:21 C 00 01 44.89 +17 07 55.4 – V I52
2021-10-29 02:43:46 C 00 01 45.03 +17 07 48.5 – V I52
2021-10-29 02:44:22 C 00 01 45.08 +17 07 46.2 – V I52
2021-11-06 01:06:23 C 00 23 47.39 -00 20 16.1 – u 807
2021-11-06 01:15:28 C 00 23 48.43 -00 21 12.8 – u 807
2021-11-06 01:24:39 C 00 23 49.47 -00 22 11.0 – u 807
2021-11-07 01:01:24 C 00 27 21.25 -02 53 18.2 – u 807
2021-11-07 01:10:39 C 00 27 22.36 -02 54 16.9 – u 807
2021-11-07 01:19:52 C 00 27 23.53 -02 55 16.8 – u 807
2021-11-08 07:49:09 C 00 32 11.092 -06 16 13.19 – U F52
2021-11-08 08:21:44 C 00 32 15.274 -06 19 47.74 – U F52
2021-11-08 08:36:29 C 00 32 17.183 -06 21 24.75 – U F52
2021-11-09 00:24:55 C 00 34 59.45 -08 04 07.7 – u 807
2021-11-09 00:34:00 C 00 35 00.72 -08 05 07.4 – u 807
2021-11-09 00:43:05 C 00 35 02.00 -08 06 07.9 – u 807
2021-11-12 02:35:35 C 00 48 26.37 -16 18 54.3 – V G96
2021-11-12 02:43:05 C 00 48 27.63 -16 19 44.0 – V G96
2021-11-12 02:50:35 C 00 48 28.86 -16 20 33.8 – V G96
2021-11-12 02:58:05 C 00 48 30.06 -16 21 23.6 – V G96
2021-12-02 04:10:24 C 02 51 13.61 -52 12 39.2 – V 807
2021-12-02 04:15:43 C 02 51 14.92 -52 12 49.9 – V 807
2021-12-02 04:21:02 C 02 51 16.28 -52 13 00.7 – V 807