IAA RAS IAA Minor Planet Database

2021 UN2

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5039563140 ± 4.05e-05
Semi-major axis (a)1.9960928649 AU ± 1.66e-04
Inclination (i)5.60085119° ± 4.43e-04
Long. of Asc. Node (Ω)298.92428217° ± 2.91e-03
Arg. of Perihelion (ω)38.64989300° ± 2.78e-03
Mean Anomaly (M)178.02631886° ± 6.66e-02
Mean Motion (n)0.3494951576°/day ± 4.35e-05
Perihelion dist (q)0.99014926 AU ± 1.15e-04
Aphelion dist (Q)3.00203647 AU ± 2.62e-04
Orbital Period2.82014289 yr ± 3.51e-04
Physical Parameters
H (abs. magnitude)22.36
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.184″
Uncertainty2
Orbit TypeApollo
MOID0.023010 AU
Observations Used48
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-27
Last Observation Used2021-12-01
Observations (49)
Date Type RA Dec Mag Band Observatory
2021-10-27 09:50:06 C 02 31 15.68 +47 33 23.7 – V V00
2021-10-27 09:57:08 C 02 31 15.59 +47 33 11.2 – V V00
2021-10-27 10:04:09 C 02 31 15.50 +47 32 58.8 – V V00
2021-10-27 10:11:07 C 02 31 15.42 +47 32 46.4 – V V00
2021-10-27 11:19:41 C 02 31 14.67 +47 30 43.6 – V V06
2021-10-27 11:21:37 C 02 31 14.68 +47 30 40.1 – V V06
2021-10-27 11:23:32 C 02 31 14.65 +47 30 36.5 – V V06
2021-10-27 11:25:28 C 02 31 14.63 +47 30 33.2 – V V06
2021-10-27 11:35:12 C 02 31 14.56 +47 30 16.0 – V 291
2021-10-27 11:39:38 C 02 31 14.54 +47 30 08.1 – V 291
2021-10-27 11:44:04 C 02 31 14.51 +47 30 00.3 – V 291
2021-10-27 23:22:19 C 02 31 16.56 +47 10 19.7 – V L01
2021-10-27 23:24:34 C 02 31 16.56 +47 10 15.9 – V L01
2021-10-27 23:26:49 C 02 31 16.51 +47 10 12.5 – V L01
2021-10-27 23:34:05 C 02 31 16.31 +47 10 00.6 – V L01
2021-10-28 09:06:44 C 02 31 14.52 +46 54 02.4 – V I52
2021-10-28 09:07:50 C 02 31 14.48 +46 54 00.6 – V I52
2021-10-28 09:12:00 C 02 31 14.42 +46 53 53.4 – V I52
2021-10-29 04:14:47 C 02 31 16.03 +46 22 04.2 – V I52
2021-10-29 04:17:06 C 02 31 16.01 +46 22 00.2 – V I52
2021-10-29 04:20:53 C 02 31 15.96 +46 21 54.6 – V I52
2021-10-30 12:25:31 C 02 31 06.39 +45 29 16.1 – o 291
2021-10-30 12:31:41 C 02 31 06.37 +45 29 05.6 – o 291
2021-11-04 06:17:34 C 02 30 50.86 +42 32 50.0 – V G96
2021-11-04 06:25:08 C 02 30 50.75 +42 32 39.2 – V G96
2021-11-04 06:40:17 C 02 30 50.53 +42 32 16.7 – V G96
2021-11-12 03:06:02 C 02 30 49.92 +38 12 39.1 – V I52
2021-11-12 03:08:33 C 02 30 50.01 +38 12 36.1 – V I52
2021-11-12 03:14:50 C 02 30 49.85 +38 12 27.1 – V I52
2021-11-12 03:20:16 C 02 30 49.98 +38 12 21.9 – V I52
2021-11-15 03:14:47 C 02 31 08.09 +36 44 20.9 – V V06
2021-11-15 03:16:43 C 02 31 08.10 +36 44 19.1 – V V06
2021-11-15 03:18:39 C 02 31 08.09 +36 44 16.4 – V V06
2021-11-15 03:20:35 C 02 31 08.09 +36 44 14.6 – V V06
2021-11-26 09:19:45 C 02 34 10.719 +32 07 11.52 – U F51
2021-11-26 09:27:37 C 02 34 10.802 +32 07 04.46 – U F51
2021-11-26 09:35:32 C 02 34 10.888 +32 06 57.62 – U F51
2021-11-26 09:43:02 C 02 34 10.970 +32 06 51.02 – U F51
2021-11-27 06:59:11 C 02 34 34.593 +31 48 26.25 – U F51
2021-11-27 07:09:43 C 02 34 34.703 +31 48 17.34 – U F51
2021-11-27 07:22:00 C 02 34 34.854 +31 48 07.00 – U F51
2021-11-27 07:32:45 C 02 34 34.993 +31 47 58.08 – U F51
2021-11-28 03:41:50 C 02 34 57.68 +31 30 53.7 – V G96
2021-11-28 03:49:57 C 02 34 57.83 +31 30 47.5 – V G96
2021-11-28 03:58:06 C 02 34 57.95 +31 30 40.4 – V G96
2021-11-28 04:06:13 C 02 34 58.06 +31 30 34.0 – V G96
2021-12-01 03:34:20 C 02 36 26.18 +30 33 42.0 – u H21
2021-12-01 03:50:42 C 02 36 26.44 +30 33 29.5 – u H21
2021-12-01 04:07:05 C 02 36 26.72 +30 33 17.2 – u H21