2011 UN91

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6451601061
Semi-major axis (a)2.3279579291 AU
Inclination (i)6.05179471°
Long. of Asc. Node (Ω)19.47484972°
Arg. of Perihelion (ω)72.81849270° ± 6.00e+00
Mean Anomaly (M)336.47058950°
Mean Motion (n)0.2774856500°/day
Perihelion dist (q)0.82605280 AU
Aphelion dist (Q)3.82986920 AU
Orbital Period3.55192310 yr
Physical Parameters
H (abs. magnitude)25.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.365″
Uncertainty
Orbit TypeApollo
MOID0.030502 AU
Observations Used22
Oppositions1
Arc Total2011-2011
First Observation Used
Last Observation Used2011-10-25
Observations (22)
Date Type RA Dec Mag Band Observatory
2011-10-21 07:31:17 C 01 08 20.29 +20 38 39.3 r G96
2011-10-21 07:42:18 C 01 08 19.03 +20 40 11.0 r G96
2011-10-21 07:53:09 C 01 08 17.73 +20 41 39.6 r G96
2011-10-21 08:04:01 C 01 08 16.51 +20 43 10.4 r G96
2011-10-23 06:46:15 C 01 03 01.51 +29 08 58.2 r G96
2011-10-23 06:49:41 C 01 03 00.79 +29 09 46.1 r G96
2011-10-23 06:53:08 C 01 03 00.18 +29 10 32.9 r G96
2011-10-23 06:56:30 C 01 02 59.46 +29 11 20.3 r G96
2011-10-23 08:53:51 C 01 02 35.41 +29 38 46.3 o 291
2011-10-23 08:58:34 C 01 02 34.47 +29 39 52.9 o 291
2011-10-23 22:53:53 C 01 00 07.85 +33 16 26.9 t 204
2011-10-23 23:47:33 C 00 59 54.21 +33 31 37.0 t 204
2011-10-24 02:25:01 C 00 59 31.66 +34 17 33.3 r H21
2011-10-24 02:30:01 C 00 59 30.36 +34 19 04.0 r H21
2011-10-24 02:32:47 C 00 59 29.65 +34 19 52.8 r H21
2011-10-24 02:46:11 C 00 59 26.00 +34 23 54.2 r H21
2011-10-24 03:40:19 C 00 59 15.55 +34 40 16.8 o H01
2011-10-24 03:55:35 C 00 59 11.37 +34 44 55.4 o H01
2011-10-24 04:11:11 C 00 59 07.01 +34 49 40.9 o H01
2011-10-24 04:23:04 C 00 59 03.67 +34 53 18.6 o H01
2011-10-25 00:49:07 C 00 53 19.75 +41 55 35.4 t H21
2011-10-25 01:01:01 C 00 53 14.97 +42 00 20.4 t H21