IAA RAS IAA Minor Planet Database

2011 UR91

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5069751499 ± 1.31e-06
Semi-major axis (a)1.7159569812 AU ± 3.39e-09
Inclination (i)27.75757334° ± 1.20e-04
Long. of Asc. Node (Ω)30.99323195° ± 6.55e-06
Arg. of Perihelion (ω)282.73127892° ± 2.80e-04
Mean Anomaly (M)121.47283995° ± 4.02e-05
Mean Motion (n)0.4384829211°/day ± 1.30e-09
Perihelion dist (q)0.84600943 AU ± 2.24e-06
Aphelion dist (Q)2.58590453 AU ± 2.24e-06
Orbital Period2.24780997 yr ± 6.65e-09
Physical Parameters
H (abs. magnitude)24.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.339″
Uncertainty0
Orbit TypeApollo
MOID0.106386 AU
Observations Used45
Oppositions5
Arc Total2011-2020
First Observation Used2011-10-23
Last Observation Used2020-10-19
Observations (45)
Date Type RA Dec Mag Band Observatory
2011-10-23 05:56:51 C 02 01 10.63 +03 56 11.3 – r G96
2011-10-23 06:10:17 C 02 01 05.70 +03 57 58.3 – r G96
2011-10-23 06:23:51 C 02 01 00.62 +03 59 47.0 – r G96
2011-10-23 06:37:20 C 02 00 55.62 +04 01 35.4 – r G96
2011-10-23 07:18:02 C 02 00 40.28 +04 06 59.0 – o H01
2011-10-23 07:27:24 C 02 00 36.82 +04 08 13.9 – o H01
2011-10-23 07:37:24 C 02 00 33.11 +04 09 33.5 – o H01
2011-10-23 07:48:10 C 02 00 29.13 +04 10 59.2 – o H01
2011-10-23 08:19:20 C 02 00 17.82 +04 15 08.7 – r G96
2011-10-23 08:19:53 C 02 00 17.56 +04 15 13.4 – r G96
2011-10-23 08:20:29 C 02 00 17.42 +04 15 17.7 – r G96
2011-10-23 08:21:01 C 02 00 17.20 +04 15 22.4 – r G96
2011-10-24 04:14:54 C 01 53 32.65 +06 46 54.3 – r H21
2011-10-24 04:25:23 C 01 53 29.04 +06 48 11.5 – r H21
2011-10-24 04:35:52 C 01 53 25.49 +06 49 27.3 – r H21
2011-10-24 05:29:59 C 01 53 08.19 +06 56 05.8 – o H01
2011-10-24 05:41:09 C 01 53 04.38 +06 57 27.0 – o H01
2011-10-24 05:53:00 C 01 53 00.32 +06 58 53.3 – o H01
2011-10-24 06:00:08 C 01 52 57.90 +06 59 45.1 – o H01
2011-10-30 03:51:32 C 01 17 09.88 +19 37 42.5 – o H21
2011-10-30 04:13:12 C 01 17 05.50 +19 39 04.6 – o H21
2011-10-30 04:35:17 C 01 17 01.08 +19 40 28.3 – o H21
2020-10-16 08:34:01 C 04 01 04.25 +04 31 10.6 – V G96
2020-10-16 08:41:27 C 04 01 00.77 +04 32 08.2 – V G96
2020-10-16 08:48:55 C 04 00 57.27 +04 33 06.0 – V G96
2020-10-16 08:56:22 C 04 00 53.77 +04 34 03.6 – V G96
2020-10-16 11:10:14 C 03 59 50.37 +04 51 23.8 – V V06
2020-10-16 11:13:25 C 03 59 48.92 +04 51 48.8 – V V06
2020-10-16 11:16:37 C 03 59 47.38 +04 52 13.2 – V V06
2020-10-16 11:19:49 C 03 59 45.87 +04 52 37.9 – V V06
2020-10-17 09:07:03 C 03 49 55.46 +07 38 17.4 – V G96
2020-10-17 09:10:18 C 03 49 53.92 +07 38 41.2 – V G96
2020-10-17 09:13:33 C 03 49 52.44 +07 39 05.3 – V G96
2020-10-18 07:08:14 C 03 40 11.10 +10 18 13.4 – V V06
2020-10-18 07:10:48 C 03 40 09.95 +10 18 31.7 – V V06
2020-10-18 07:13:22 C 03 40 08.82 +10 18 49.6 – V V06
2020-10-19 01:34:12 C 03 32 09.67 +12 25 22.2 – V L01
2020-10-19 01:38:30 C 03 32 07.78 +12 25 51.5 – V L01
2020-10-19 01:42:58 C 03 32 05.86 +12 26 21.0 – V L01
2020-10-19 01:47:26 C 03 32 03.87 +12 26 51.0 – V L01
2020-10-19 02:41:31 C 03 31 40.27 +12 32 53.5 – V 204
2020-10-19 03:03:23 C 03 31 30.69 +12 35 19.9 – V 204
2020-10-19 08:14:37 C 03 29 20.22 +13 10 03.9 – V I52
2020-10-19 08:20:08 C 03 29 17.83 +13 10 41.5 – V I52
2020-10-19 08:25:40 C 03 29 15.43 +13 11 18.0 – V I52