IAA RAS IAA Minor Planet Database

2021 UN3

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7598622412 ± 4.68e-07
Semi-major axis (a)2.0367441835 AU ± 3.17e-07
Inclination (i)6.09302482° ± 2.82e-05
Long. of Asc. Node (Ω)170.21815154° ± 3.85e-04
Arg. of Perihelion (ω)111.08387495° ± 3.35e-04
Mean Anomaly (M)169.67075153° ± 1.11e-04
Mean Motion (n)0.3390841963°/day ± 7.91e-08
Perihelion dist (q)0.48909918 AU ± 9.55e-07
Aphelion dist (Q)3.58438918 AU ± 1.10e-06
Orbital Period2.90673023 yr ± 6.78e-07
Physical Parameters
H (abs. magnitude)21.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.181″
Uncertainty0
Orbit TypeApollo
MOID0.019647 AU
Observations Used47
Oppositions2
Arc Total2021-2024
First Observation Used2021-10-15
Last Observation Used2024-06-01
Observations (52)
Date Type RA Dec Mag Band Observatory
2021-10-15 09:39:33 C 05 01 12.31 +06 56 09.2 – V G96
2021-10-15 09:47:11 C 05 01 10.27 +06 56 03.2 – V G96
2021-10-28 08:46:31 C 03 49 22.56 +03 59 39.5 – V G96
2021-10-28 08:53:57 C 03 49 21.12 +03 59 36.4 – V G96
2021-10-28 09:01:23 C 03 49 19.68 +03 59 34.2 – V G96
2021-10-28 09:08:49 C 03 49 18.18 +03 59 30.2 – V G96
2021-10-28 10:54:15 C 03 48 58.701 +03 58 50.19 – U F51
2021-10-28 10:58:37 C 03 48 56.91 +03 58 44.3 – V V06
2021-10-28 11:03:12 C 03 48 55.91 +03 58 41.5 – V V06
2021-10-28 11:07:47 C 03 48 55.19 +03 58 40.9 – V V06
2021-10-28 11:10:25 C 03 48 55.566 +03 58 43.43 – U F51
2021-10-28 11:26:41 C 03 48 52.384 +03 58 36.65 – U F51
2021-10-28 11:42:58 C 03 48 49.225 +03 58 29.90 – U F51
2021-10-29 00:39:22 C 03 46 24.01 +03 53 03.5 – V L01
2021-10-29 00:42:44 C 03 46 23.40 +03 53 02.0 – V L01
2021-10-29 00:46:06 C 03 46 22.70 +03 53 00.1 – V L01
2021-10-29 00:50:03 C 03 46 21.97 +03 52 58.8 – V L01
2021-10-29 00:54:25 C 03 46 21.17 +03 52 57.5 – V L01
2021-10-29 01:26:16 C 03 46 15.20 +03 52 43.2 – V 033
2021-10-29 01:28:36 C 03 46 14.76 +03 52 42.3 – V 033
2021-10-29 01:30:55 C 03 46 14.35 +03 52 41.3 – V 033
2021-10-29 09:05:24 C 03 44 50.79 +03 49 45.2 – V I52
2021-10-29 09:08:43 C 03 44 50.20 +03 49 43.8 – V I52
2021-10-29 09:12:02 C 03 44 49.55 +03 49 42.4 – V I52
2021-10-29 09:15:21 C 03 44 48.94 +03 49 40.7 – V I52
2021-10-30 11:43:38 C 03 40 03.29 +03 39 35.4 – V I52
2021-10-30 11:44:45 C 03 40 03.11 +03 39 34.4 – V I52
2021-10-30 11:50:23 C 03 40 02.13 +03 39 32.1 – V I52
2021-11-01 11:28:55 C 03 31 57.630 +03 23 13.71 – U F52
2021-11-01 11:46:39 C 03 31 54.641 +03 23 07.99 – U F52
2021-11-01 12:04:18 C 03 31 51.650 +03 23 02.41 – U F52
2021-11-01 12:21:51 C 03 31 48.692 +03 22 56.67 – U F52
2021-11-06 10:43:46 C 03 14 11.79 +02 51 53.8 – V I52
2021-11-06 10:47:06 C 03 14 11.37 +02 51 52.7 – V I52
2021-11-06 10:50:25 C 03 14 10.91 +02 51 52.1 – V I52
2021-11-06 10:53:44 C 03 14 10.45 +02 51 51.1 – V I52
2021-11-07 09:20:48 C 03 11 13.07 +02 47 27.1 – V I52
2021-11-07 09:28:53 C 03 11 12.00 +02 47 25.6 – V I52
2021-11-07 09:33:39 C 03 11 11.37 +02 47 24.4 – V I52
2021-11-07 09:38:24 C 03 11 10.73 +02 47 24.0 – V I52
2021-11-08 08:47:15 C 03 08 15.844 +02 43 22.79 – U F51
2021-11-08 08:54:08 C 03 08 14.968 +02 43 21.53 – U F51
2021-11-08 09:01:03 C 03 08 14.065 +02 43 20.24 – U F51
2021-11-08 09:07:54 C 03 08 13.205 +02 43 19.20 – U F51
2021-11-10 11:53:18 C 03 02 11.995 +02 35 59.31 – U F52
2021-11-10 11:53:55 C 03 02 11.904 +02 35 59.28 – U F51
2021-11-10 12:25:58 C 03 02 08.173 +02 35 55.11 – U F51
2021-11-10 12:26:18 C 03 02 08.160 +02 35 55.08 – U F52
2021-11-10 12:41:46 C 03 02 06.353 +02 35 53.38 – U F51
2021-11-10 12:42:42 C 03 02 06.236 +02 35 53.13 – U F52