2021 UN4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3186961977 ± 2.43e-05
Semi-major axis (a)1.7444651243 AU ± 7.05e-05
Inclination (i)32.49037298° ± 9.25e-04
Long. of Asc. Node (Ω)207.32443383° ± 8.37e-05
Arg. of Perihelion (ω)157.90908448° ± 4.13e-04
Mean Anomaly (M)287.85360229° ± 3.94e-02
Mean Motion (n)0.4277783875°/day ± 2.59e-05
Perihelion dist (q)1.18851072 AU ± 6.41e-05
Aphelion dist (Q)2.30041953 AU ± 1.02e-04
Orbital Period2.30405816 yr ± 1.40e-04
Physical Parameters
H (abs. magnitude)21.65
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.214″
Uncertainty2
Orbit TypeAmor
MOID0.208798 AU
Observations Used73
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-25
Last Observation Used2021-12-02
Observations (80)
Date Type RA Dec Mag Band Observatory
2021-10-30 06:09:55 C 01 00 31.17 -08 02 37.4 V 654
2021-10-30 06:13:12 C 01 00 30.77 -08 02 54.1 V 734
2021-10-30 06:50:04 C 01 00 34.48 -08 05 40.5 V 654
2021-10-30 07:13:14 C 01 00 37.768 -08 07 18.95 U F52
2021-10-30 07:29:36 C 01 00 39.112 -08 08 33.73 U F52
2021-10-30 07:30:03 C 01 00 37.79 -08 08 42.5 V 654
2021-10-30 07:46:00 C 01 00 40.446 -08 09 48.27 U F52
2021-10-31 05:42:19 C 01 02 38.29 -09 47 12.1 V G96
2021-10-31 05:49:50 C 01 02 38.89 -09 47 44.9 V G96
2021-10-31 05:57:21 C 01 02 39.50 -09 48 16.8 V G96
2021-10-31 06:04:53 C 01 02 40.11 -09 48 49.8 V G96
2021-11-03 12:15:05 C 01 09 24.60 -14 55 16.6 V 474
2021-11-03 12:17:39 C 01 09 24.80 -14 55 25.7 V 474
2021-11-03 12:20:13 C 01 09 24.99 -14 55 34.8 V 474
2021-11-06 02:19:13 C 01 14 30.08 -18 18 25.4 u 807
2021-11-06 02:27:14 C 01 14 30.65 -18 18 50.1 u 807
2021-11-06 02:35:13 C 01 14 31.25 -18 19 14.2 u 807
2021-11-06 10:38:42 C 01 15 09.78 -18 43 01.6 V 474
2021-11-06 10:42:05 C 01 15 10.02 -18 43 11.8 V 474
2021-11-06 10:45:29 C 01 15 10.26 -18 43 21.9 V 474
2021-11-06 10:48:53 C 01 15 10.51 -18 43 31.7 V 474
2021-11-08 07:44:04 C 01 18 42.278 -20 47 43.12 U F51
2021-11-08 07:59:49 C 01 18 43.385 -20 48 23.97 U F51
2021-11-08 08:15:36 C 01 18 44.479 -20 49 04.77 U F51
2021-11-14 01:28:38 C 01 28 56.93 -25 39 45.8 V 807
2021-11-14 01:37:02 C 01 28 57.49 -25 40 00.4 V 807
2021-11-14 01:45:04 C 01 28 58.02 -25 40 14.2 V 807
2021-12-02 03:28:26 C 01 57 48.38 -32 03 18.8 V 807
2021-12-02 03:40:40 C 01 57 49.13 -32 03 22.4 V 807
2021-12-02 03:52:23 C 01 57 49.80 -32 03 25.5 V 807