2011 UF21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4072935541 ± 5.38e-08
Semi-major axis (a)1.5193280374 AU ± 3.82e-09
Inclination (i)21.38379166° ± 8.07e-06
Long. of Asc. Node (Ω)191.25375925° ± 8.70e-06
Arg. of Perihelion (ω)65.81556458° ± 1.46e-05
Mean Anomaly (M)270.77021165° ± 6.14e-06
Mean Motion (n)0.5263019119°/day ± 1.99e-09
Perihelion dist (q)0.90051552 AU ± 8.18e-08
Aphelion dist (Q)2.13814055 AU ± 8.20e-08
Orbital Period1.87273932 yr ± 7.07e-09
Physical Parameters
H (abs. magnitude)19.56
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.273″
Uncertainty0
Orbit TypeApollo
MOID0.063990 AU
Observations Used144
Oppositions7
Arc Total2009-2024
First Observation Used2009-10-15
Last Observation Used2024-10-20
Observations (153)
Date Type RA Dec Mag Band Observatory
2009-10-15 02:05:48 C 21 26 05.70 -04 36 52.8 n 645
2009-10-15 02:07:00 C 21 26 05.82 -04 36 53.9 n 645
2009-10-15 02:10:35 C 21 26 06.24 -04 36 58.0 n 645
2011-10-19 08:14:01 C 01 25 10.208 -02 39 16.06 L F51
2011-10-19 08:31:54 C 01 25 09.085 -02 39 35.69 L F51
2011-10-19 08:50:15 C 01 25 07.925 -02 39 56.17 L F51
2011-10-19 09:07:04 C 01 25 06.853 -02 40 14.81 L F51
2011-10-20 08:53:23 C 01 23 41.49 -03 06 08.2 o 291
2011-10-20 08:56:14 C 01 23 41.33 -03 06 11.4 o 291
2011-10-20 08:59:05 C 01 23 41.16 -03 06 14.5 o 291
2011-10-20 15:55:05 C 01 23 16.71 -03 13 25.0 o E10
2011-10-20 16:00:25 C 01 23 16.36 -03 13 30.5 o E10
2011-10-20 16:05:42 C 01 23 16.05 -03 13 36.2 o E10
2011-10-20 22:49:36 C 01 22 53.04 -03 20 58.1 t 204
2011-10-20 23:02:26 C 01 22 52.33 -03 21 11.6 u I93
2011-10-20 23:17:34 C 01 22 51.39 -03 21 27.2 u I93
2011-10-20 23:20:11 C 01 22 51.20 -03 21 30.6 t 204
2011-10-20 23:32:42 C 01 22 50.51 -03 21 43.3 u I93
2011-10-21 02:22:13 C 01 22 41.05 -03 24 26.3 o 807
2011-10-21 02:32:20 C 01 22 40.45 -03 24 36.7 o 807
2011-10-21 04:01:13 C 01 22 34.94 -03 26 09.3 c 821
2011-10-21 04:08:36 C 01 22 34.55 -03 26 16.2 c 821
2011-10-21 04:12:47 C 01 22 34.21 -03 26 21.2 c 821
2011-10-21 06:18:40 C 01 22 27.14 -03 28 45.5 o 291
2011-10-21 06:21:35 C 01 22 27.00 -03 28 48.6 o 291
2011-10-21 06:24:29 C 01 22 26.82 -03 28 51.9 o 291
2011-10-22 05:32:49 C 01 21 07.49 -03 52 21.3 o 807
2011-10-22 05:44:52 C 01 21 06.77 -03 52 33.3 o 807
2011-10-22 05:56:29 C 01 21 06.08 -03 52 44.9 o 807
2011-10-23 05:46:56 C 01 19 47.36 -04 16 34.2 o 291
2011-10-23 05:49:53 C 01 19 47.18 -04 16 37.3 o 291
2011-10-23 05:52:50 C 01 19 47.02 -04 16 39.7 o 291
2011-10-24 04:57:25 C 01 18 32.52 -04 38 44.0 o 291
2011-10-24 05:00:24 C 01 18 32.39 -04 38 46.8 o 291
2011-10-24 05:03:26 C 01 18 32.18 -04 38 49.9 o 291
2011-10-25 04:55:15 C 01 17 16.80 -05 00 38.2 o 807
2011-10-25 05:06:12 C 01 17 16.19 -05 00 48.0 o 807
2011-10-25 05:18:42 C 01 17 15.52 -05 00 58.9 o 807
2011-10-28 05:58:46 C 01 13 42.41 -06 03 05.6 o 291
2011-10-28 06:01:57 C 01 13 42.22 -06 03 07.8 o 291
2011-10-28 06:05:07 C 01 13 42.05 -06 03 10.6 o 291
2011-10-29 04:08:46 C 01 12 42.10 -06 20 27.9 o 291
2011-10-29 04:12:27 C 01 12 41.92 -06 20 30.6 o 291
2011-10-29 04:16:10 C 01 12 41.74 -06 20 33.8 o 291
2011-11-02 04:26:19 C 01 08 44.97 -07 27 55.3 o 291
2011-11-02 04:30:30 C 01 08 44.78 -07 27 58.2 o 291
2011-11-02 04:34:39 C 01 08 44.60 -07 28 01.0 o 291
2011-11-03 06:39:09 C 01 07 47.53 -07 44 05.5 o 291
2011-11-03 06:43:50 C 01 07 47.34 -07 44 08.6 o 291
2011-11-03 06:48:29 C 01 07 47.14 -07 44 11.6 o 291