412977 (1990 UO)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7727853676 ± 1.87e-07
Semi-major axis (a)1.2570512113 AU ± 4.29e-09
Inclination (i)31.59049413° ± 2.47e-05
Long. of Asc. Node (Ω)205.57040872° ± 7.70e-06
Arg. of Perihelion (ω)333.53177339° ± 1.50e-05
Mean Anomaly (M)250.27438154° ± 3.29e-05
Mean Motion (n)0.6993310640°/day ± 3.58e-09
Perihelion dist (q)0.28562043 AU ± 2.35e-07
Aphelion dist (Q)2.22848199 AU ± 2.35e-07
Orbital Period1.40938439 yr ± 7.21e-09
Physical Parameters
H (abs. magnitude)19.57
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.434″
Uncertainty0
Orbit TypeApollo
MOID0.204796 AU
Observations Used191
Oppositions10
Arc Total1990-2025
First Observation Used1990-10-22
Last Observation Used2025-11-11
Observations (206)
Date Type RA Dec Mag Band Observatory
1990-10-22 08:03:28 C 01 23 20.61 +07 54 48.1 a 691
1990-10-22 08:34:27 C 01 23 16.15 +07 53 51.8 a 691
1990-10-22 09:04:35 C 01 23 11.87 +07 52 56.9 a 691
1990-10-23 05:02:40 A 01 20 24.62 +07 16 15.1 D 691
1990-10-23 05:10:54 A 01 20 23.45 +07 16 00.3 D 691
1990-10-23 05:26:34 A 01 20 21.12 +07 15 30.4 D 691
1990-10-23 09:32:04 A 01 19 45.64 +07 07 55.7 D 691
1990-10-23 09:47:51 A 01 19 43.28 +07 07 26.1 D 691
1990-10-24 05:54:44 A 01 16 52.15 +06 29 42.1 D 691
1990-10-24 06:01:31 A 01 16 51.20 +06 29 30.1 D 691
1990-10-24 06:17:10 A 01 16 48.91 +06 28 59.6 D 691
1990-10-25 06:32:58 C 01 13 19.14 +05 42 40.5 a 691
1990-10-25 06:40:27 C 01 13 18.04 +05 42 26.8 a 691
1990-10-25 06:57:45 C 01 13 15.46 +05 41 52.6 a 691
1990-10-26 06:44:28 A 01 09 47.81 +04 55 43.7 D 691
1990-10-26 06:51:20 A 01 09 46.79 +04 55 30.2 D 691
1990-10-26 07:07:06 A 01 09 44.42 +04 54 58.9 D 691
1990-10-28 08:47:21 A 01 02 24.60 +03 16 26.9 D 691
1990-10-28 08:55:52 A 01 02 23.29 +03 16 09.5 D 691
1990-10-28 09:11:59 A 01 02 20.81 +03 15 37.5 D 691
2004-09-21 06:11:34 C 01 31 13.34 +22 42 17.9 n 645
2004-09-21 06:11:34 C 01 31 13.368 +22 42 17.72 n 645
2004-09-21 06:16:21 C 01 31 13.00 +22 42 15.0 n 645
2004-09-21 06:16:21 C 01 31 13.016 +22 42 14.89 n 645
2007-09-18 10:16:16 C 03 48 50.68 +19 56 31.4 r G96
2007-09-18 10:24:08 C 03 48 50.94 +19 56 27.3 r G96
2007-09-18 10:32:03 C 03 48 51.19 +19 56 23.6 r G96
2007-09-18 10:39:56 C 03 48 51.40 +19 56 19.4 r G96
2007-10-19 07:29:22 C 03 57 26.06 +02 25 49.5 19.3 c 704
2007-10-19 07:44:44 C 03 57 25.60 +02 25 00.3 19.5 c 704
2007-10-19 08:00:05 C 03 57 25.11 +02 24 10.4 20.0 c 704
2007-10-19 08:15:28 C 03 57 24.61 +02 23 21.2 19.7 c 704
2007-10-20 07:24:54 C 03 56 44.91 +01 05 43.3 18.9 c 704
2007-10-20 07:39:56 C 03 56 44.01 +01 04 47.6 o H55
2007-10-20 07:42:58 C 03 56 43.90 +01 04 37.0 o H55
2007-10-20 07:46:07 C 03 56 43.80 +01 04 26.1 o H55
2007-10-20 07:57:40 C 03 56 43.77 +01 03 48.4 19.7 c 704
2007-10-20 08:14:05 C 03 56 43.12 +01 02 51.4 19.8 c 704
2007-10-20 08:30:29 C 03 56 42.56 +01 01 54.6 19.6 c 704
2007-10-20 08:41:09 C 03 56 42.28 +01 01 16.7 r 703
2007-10-20 08:48:28 C 03 56 42.02 +01 00 52.1 r 701
2007-10-20 08:56:29 C 03 56 41.74 +01 00 23.6 r 701
2007-10-20 08:58:30 C 03 56 41.67 +01 00 16.8 r 703
2007-10-20 09:04:28 C 03 56 41.34 +00 59 54.7 r 701
2007-10-20 09:07:08 C 03 56 41.31 +00 59 45.8 r 703
2007-10-20 09:12:29 C 03 56 41.13 +00 59 28.4 r 701
2007-10-20 10:04:57 C 03 56 38.98 +00 56 23.8 r 734
2007-10-20 10:08:31 C 03 56 38.86 +00 56 09.6 r 734
2007-10-20 10:12:05 C 03 56 38.59 +00 55 56.7 r 734
2007-10-20 10:15:37 C 03 56 38.65 +00 55 47.9 r 734