2011 XS2

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7408364185 ± 1.56e-07
Semi-major axis (a)1.6405188392 AU ± 2.45e-08
Inclination (i)30.80877062° ± 1.56e-05
Long. of Asc. Node (Ω)225.70777781° ± 4.24e-05
Arg. of Perihelion (ω)99.56363716° ± 4.57e-05
Mean Anomaly (M)256.89379569° ± 4.76e-05
Mean Motion (n)0.4690730081°/day ± 1.05e-08
Perihelion dist (q)0.42516274 AU ± 2.56e-07
Aphelion dist (Q)2.85587494 AU ± 2.60e-07
Orbital Period2.10122149 yr ± 4.71e-08
Physical Parameters
H (abs. magnitude)18.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.177″
Uncertainty0
Orbit TypeApollo
MOID0.087857 AU
Observations Used111
Oppositions7
Arc Total2011-2024
First Observation Used2011-12-13
Last Observation Used2024-12-22
Observations (112)
Date Type RA Dec Mag Band Observatory
2011-12-18 05:17:48 C 05 36 30.81 -42 55 38.4 u I20
2011-12-18 05:44:29 C 05 36 26.10 -42 54 53.2 u I20
2011-12-18 05:56:44 C 05 36 23.96 -42 54 31.0 u I20
2011-12-19 00:36:25 C 05 33 19.94 -42 22 12.2 o 807
2011-12-19 00:42:40 C 05 33 18.91 -42 22 01.8 o 807
2011-12-19 00:48:55 C 05 33 17.88 -42 21 51.3 o 807
2011-12-19 00:55:08 C 05 33 16.85 -42 21 40.8 o 807
2011-12-19 01:01:24 C 05 33 15.82 -42 21 30.3 o 807
2011-12-20 01:09:15 C 05 29 31.00 -41 40 19.1 o 807
2011-12-20 01:14:07 C 05 29 30.26 -41 40 11.1 o 807
2011-12-20 01:20:21 C 05 29 29.30 -41 40 00.7 o 807
2011-12-20 01:29:22 C 05 29 27.91 -41 39 45.6 o 807
2011-12-20 01:34:00 C 05 29 27.20 -41 39 37.9 o 807
2011-12-20 01:38:28 C 05 29 26.52 -41 39 30.5 o 807
2011-12-20 11:03:46 C 05 28 03.26 -41 23 35.3 r E12
2011-12-20 16:20:31 C 05 27 16.17 -41 14 42.2 u D90
2011-12-20 16:36:18 C 05 27 13.85 -41 14 15.4 u D90
2011-12-20 16:44:19 C 05 27 12.68 -41 14 01.5 u D90
2011-12-23 00:36:43 C 05 19 54.66 -39 41 50.5 o 807
2011-12-23 00:40:54 C 05 19 54.14 -39 41 44.0 o 807
2011-12-23 00:59:32 C 05 19 51.84 -39 41 14.3 o 807
2011-12-23 01:13:05 C 05 19 50.16 -39 40 52.6 o 807
2011-12-23 14:48:43 C 05 18 12.88 -39 18 58.6 r E12
2011-12-25 10:54:33 C 05 13 28.36 -38 09 08.4 r E12
2011-12-27 11:09:17 C 05 08 56.72 -36 55 02.1 r E12
2011-12-27 11:14:37 C 05 08 56.23 -36 54 54.3 r E12
2011-12-30 14:03:44 C 05 03 07.24 -35 04 32.6 r E12
2011-12-30 14:09:08 C 05 03 06.84 -35 04 25.1 r E12
2011-12-31 11:16:58 C 05 01 43.28 -34 34 14.0 r E12
2011-12-31 11:22:35 C 05 01 42.53 -34 34 03.2 o 474
2011-12-31 11:23:57 C 05 01 42.76 -34 34 04.0 r E12
2011-12-31 11:25:45 C 05 01 42.32 -34 33 58.7 o 474
2011-12-31 11:29:24 C 05 01 42.07 -34 33 53.3 o 474
2012-01-03 11:04:08 C 04 57 37.37 -32 54 44.1 r E12
2012-01-11 00:57:42 C 04 51 00.91 -29 02 17.0 o 807
2012-01-11 01:03:30 C 04 51 00.75 -29 02 10.3 o 807
2012-01-11 01:09:17 C 04 51 00.61 -29 02 03.4 o 807
2012-01-11 01:15:04 C 04 51 00.43 -29 01 56.5 o 807
2012-01-11 01:20:35 C 04 51 00.29 -29 01 49.9 o 807
2012-01-17 10:50:50 C 04 48 36.56 -26 05 03.2 r E12
2012-01-17 11:05:02 C 04 48 36.43 -26 04 47.2 r E12
2012-02-19 02:36:10 C 05 01 56.79 -14 33 22.9 o 291
2012-02-19 02:44:50 C 05 01 57.09 -14 33 17.1 o 291
2012-02-19 02:55:00 C 05 01 57.44 -14 33 09.9 o 291
2013-12-28 01:36:32 C 23 18 38.05 -26 28 20.4 o 926
2013-12-28 01:41:55 C 23 18 40.53 -26 28 20.0 o 926
2013-12-28 01:47:17 C 23 18 43.04 -26 28 18.8 o 926
2013-12-30 01:37:31 C 23 40 32.43 -26 17 12.5 o 926
2013-12-30 01:42:54 C 23 40 34.80 -26 17 10.7 o 926
2013-12-30 01:48:17 C 23 40 37.19 -26 17 07.9 o 926