1999 UR

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5039915044 ± 4.13e-08
Semi-major axis (a)1.8984308907 AU ± 3.76e-09
Inclination (i)3.59197597° ± 9.53e-06
Long. of Asc. Node (Ω)50.64167789° ± 7.70e-05
Arg. of Perihelion (ω)18.26079857° ± 7.29e-05
Mean Anomaly (M)338.15204209° ± 1.59e-05
Mean Motion (n)0.3768079770°/day ± 1.12e-09
Perihelion dist (q)0.94163785 AU ± 7.85e-08
Aphelion dist (Q)2.85522393 AU ± 7.87e-08
Orbital Period2.61572563 yr ± 7.78e-09
Physical Parameters
H (abs. magnitude)21.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.014621 AU
Observations Used75
Oppositions9
Arc Total1999-2013
First Observation Used1999-10-16
Last Observation Used2013-02-13
Observations (77)
Date Type RA Dec Mag Band Observatory
1999-10-16 08:23:34 C 03 51 05.24 -10 15 28.0 17.2 a 704
1999-10-16 08:46:19 C 03 51 21.40 -10 15 00.6 17.6 a 704
1999-10-16 09:09:01 C 03 51 37.54 -10 14 33.2 17.1 a 704
1999-10-16 09:31:47 C 03 51 53.75 -10 14 05.5 17.2 a 704
1999-10-16 09:55:03 C 03 52 10.34 -10 13 36.8 17.3 a 704
1999-10-17 02:08:31 C 04 04 47.85 -09 52 02.3 c 118
1999-10-17 02:12:48 C 04 04 51.23 -09 51 56.1 c 118
1999-10-17 02:18:00 C 04 04 55.24 -09 51 48.2 c 118
1999-10-17 15:36:50 C 04 16 04.56 -09 27 33.6 413
1999-10-17 15:38:45 C 04 16 06.13 -09 27 30.2 413
1999-10-17 15:40:38 C 04 16 07.68 -09 27 27.1 413
1999-10-17 18:25:30 C 04 18 23.47 -09 22 41.4 413
1999-10-17 18:27:24 C 04 18 25.07 -09 22 37.9 413
1999-10-17 18:29:19 C 04 18 26.64 -09 22 34.5 413
1999-10-17 23:10:33 C 04 22 42.23 -09 17 25.8 611
1999-10-17 23:13:19 C 04 22 44.54 -09 17 22.3 611
1999-10-17 23:14:40 C 04 22 45.95 -09 17 22.0 611
1999-10-17 23:15:59 C 04 22 46.81 -09 17 15.7 611
1999-10-17 23:41:28 C 04 23 08.01 -09 16 31.5 c 118
1999-10-17 23:43:48 C 04 23 09.99 -09 16 27.7 c 118
1999-10-17 23:44:45 C 04 23 10.84 -09 16 25.5 c 118
1999-10-18 00:10:05 C 04 23 33.00 -09 15 39.6 d 046
1999-10-18 00:12:11 C 04 23 34.77 -09 15 36.0 d 046
1999-10-18 00:13:07 C 04 23 35.57 -09 15 34.8 d 046
1999-10-18 00:14:04 C 04 23 36.40 -09 15 32.1 d 046
1999-10-18 02:54:36 C 04 25 54.96 -09 10 35.4 557
1999-10-18 02:55:18 C 04 25 55.54 -09 10 34.8 557
1999-10-18 02:56:40 C 04 25 56.71 -09 10 33.8 557
1999-10-18 09:27:15 C 04 31 55.54 -08 57 25.0 17.5 a 704
1999-10-18 09:43:59 C 04 32 10.36 -08 56 51.4 17.7 a 704
1999-10-18 09:59:04 C 04 32 25.87 -08 56 47.3 c 658
1999-10-18 10:00:00 C 04 32 26.68 -08 56 45.3 c 658
1999-10-18 10:00:56 C 04 32 25.34 -08 56 17.3 17.1 a 704
1999-10-18 10:01:01 C 04 32 27.61 -08 56 43.8 c 658
1999-10-18 10:04:54 C 04 32 30.81 -08 56 09.5 i 670
1999-10-18 10:06:10 C 04 32 31.95 -08 56 07.6 i 670
1999-10-18 10:28:20 C 04 32 51.58 -08 55 23.1 i 670
1999-10-18 10:30:52 C 04 32 53.71 -08 55 17.4 i 670
1999-10-18 10:34:27 C 04 32 55.01 -08 55 09.4 17.2 a 704
1999-10-18 23:32:30 C 04 45 19.73 -08 27 48.0 d 046
1999-10-18 23:33:23 C 04 45 20.56 -08 27 46.0 d 046
1999-10-18 23:34:15 C 04 45 21.37 -08 27 44.1 d 046
1999-10-18 23:35:13 C 04 45 22.31 -08 27 42.0 d 046
1999-10-19 09:29:08 C 04 55 06.88 -08 03 56.6 17.1 a 704
1999-10-19 09:48:57 C 04 55 26.01 -08 03 08.6 17.1 a 704
1999-10-19 10:08:38 C 04 55 44.99 -08 02 20.4 17.2 a 704
1999-10-19 10:28:21 C 04 56 04.07 -08 01 31.6 17.2 a 704
1999-10-19 10:48:01 C 04 56 23.08 -08 00 42.7 17.6 a 704
1999-10-19 12:07:05 C 04 57 41.92 -07 57 26.5 i 670
1999-10-19 12:08:24 C 04 57 43.24 -07 57 22.7 i 670