1998 UR

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3763848376 ± 2.00e+00
Semi-major axis (a)1.6445369467 AU ± 3.00e+00
Inclination (i)17.32192358° ± 4.00e+00
Long. of Asc. Node (Ω)28.05190459° ± 5.00e+00
Arg. of Perihelion (ω)312.17562507° ± 6.00e+00
Mean Anomaly (M)323.52857445° ± 2.21e+00
Mean Motion (n)0.4673506800°/day ± 1.28e+00
Perihelion dist (q)1.02555710 AU ± 3.78e+00
Aphelion dist (Q)2.26349530 AU ± 5.28e+00
Orbital Period2.10892530 yr ± 5.77e+00
Physical Parameters
H (abs. magnitude)22.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual2.025″
Uncertainty4
Orbit TypeAmor
MOID0.103345 AU
Observations Used26
Oppositions1
Arc Total1998-1998
First Observation Used
Last Observation Used1998-10-27
Observations (26)
Date Type RA Dec Mag Band Observatory
1998-10-16 07:12:45 C 02 01 21.23 -04 34 48.3 19.1 a 704
1998-10-16 07:41:32 C 02 01 15.58 -04 31 12.2 18.9 a 704
1998-10-16 08:39:14 C 02 01 04.17 -04 23 57.4 19.7 a 704
1998-10-16 09:08:29 C 02 00 58.37 -04 20 17.5 19.7 a 704
1998-10-17 00:14:59 C 01 58 20.49 -02 28 10.5 046
1998-10-17 00:15:53 C 01 58 20.24 -02 28 03.6 046
1998-10-17 00:16:45 C 01 58 20.12 -02 27 56.9 046
1998-10-17 07:33:38 C 01 57 06.40 -01 34 48.8 c 699
1998-10-17 08:08:24 C 01 56 59.78 -01 30 36.5 c 699
1998-10-17 08:44:11 C 01 56 53.14 -01 26 19.7 c 699
1998-10-17 14:15:57 C 01 55 57.72 -00 45 06.4 422
1998-10-17 14:17:26 C 01 55 57.37 -00 44 55.6 422
1998-10-17 14:20:55 C 01 55 56.76 -00 44 30.8 422
1998-10-17 14:24:04 C 01 55 56.16 -00 44 08.7 422
1998-10-17 15:01:58 C 01 55 49.06 -00 39 37.6 422
1998-10-17 15:09:30 C 01 55 47.70 -00 38 43.8 422
1998-10-18 11:52:50 C 01 52 26.47 +01 45 47.8 422
1998-10-18 11:56:26 C 01 52 25.79 +01 46 13.0 422
1998-10-18 11:57:36 C 01 52 25.56 +01 46 20.3 422
1998-10-18 11:59:57 C 01 52 25.14 +01 46 36.0 422
1998-10-19 14:26:56 C 01 48 14.34 +04 41 37.5 b 426
1998-10-19 14:37:58 C 01 48 12.50 +04 42 47.9 b 426
1998-10-19 14:43:46 C 01 48 11.56 +04 43 25.4 b 426
1998-10-27 10:31:54 C 01 24 47.99 +20 19 51.1 658
1998-10-27 10:36:32 C 01 24 47.53 +20 20 07.9 658
1998-10-27 10:40:37 C 01 24 47.12 +20 20 22.2 658