1990 UN

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5279466604 ± 2.00e+00
Semi-major axis (a)1.7097051456 AU ± 3.00e+00
Inclination (i)3.69045794° ± 4.00e+00
Long. of Asc. Node (Ω)7.59614714° ± 5.00e+00
Arg. of Perihelion (ω)97.94737956° ± 6.00e+00
Mean Anomaly (M)217.98725996° ± 8.36e-01
Mean Motion (n)0.4408857200°/day ± 1.16e+00
Perihelion dist (q)0.80707020 AU ± 3.70e+00
Aphelion dist (Q)2.61232020 AU ± 5.72e+00
Orbital Period2.23551730 yr ± 5.88e+00
Physical Parameters
H (abs. magnitude)23.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.546″
Uncertainty3
Orbit TypeApollo
MOID0.020924 AU
Observations Used22
Oppositions1
Arc Total1990-1990
First Observation Used
Last Observation Used1990-11-06
Observations (22)
Date Type RA Dec Mag Band Observatory
1990-10-22 06:08:23 A 00 45 34.70 +17 08 46.3 D 691
1990-10-22 06:39:10 A 00 45 28.40 +17 09 41.9 D 691
1990-10-22 07:09:46 A 00 45 22.15 +17 10 38.0 D 691
1990-10-23 05:40:31 A 00 40 58.37 +17 54 04.9 D 691
1990-10-23 06:12:49 A 00 40 51.02 +17 55 09.9 D 691
1990-10-23 06:43:10 A 00 40 44.10 +17 56 11.2 D 691
1990-10-23 10:06:48 A 00 39 58.04 +18 02 59.2 D 691
1990-10-23 10:16:26 A 00 39 55.78 +18 03 18.3 D 691
1990-10-23 10:33:05 A 00 39 52.22 +18 03 50.9 D 691
1990-10-24 03:54:36 A 00 36 07.47 +18 41 25.1 D 691
1990-10-24 04:35:19 A 00 35 57.19 +18 42 57.7 D 691
1990-10-24 05:21:27 A 00 35 45.42 +18 44 42.7 D 691
1990-10-25 07:07:19 A 00 29 14.24 +19 46 26.7 D 691
1990-10-25 07:30:33 A 00 29 07.50 +19 47 24.0 D 691
1990-10-26 04:56:08 A 00 23 01.48 +20 44 59.4 D 691
1990-10-26 05:19:45 A 00 22 53.67 +20 46 05.6 D 691
1990-10-28 08:03:20 A 00 04 30.79 +23 29 17.1 D 691
1990-10-28 08:32:09 A 00 04 17.97 +23 30 58.5 D 691
1990-11-06 03:00:18 A 20 16 36.29 +39 21 40.8 D 691
1990-11-06 03:17:09 A 20 16 01.74 +39 21 39.9 D 691
1990-11-06 03:32:12 A 20 15 30.65 +39 21 39.9 D 691
1990-11-06 03:44:21 A 20 15 05.77 +39 21 39.0 D 691