2015 XW261

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4668901848 ± 2.31e-08
Semi-major axis (a)1.2486842336 AU ± 9.76e-10
Inclination (i)29.67516663° ± 8.83e-06
Long. of Asc. Node (Ω)269.88916746° ± 1.98e-06
Arg. of Perihelion (ω)289.45619973° ± 4.72e-06
Mean Anomaly (M)341.81450469° ± 2.86e-06
Mean Motion (n)0.7063717691°/day ± 8.28e-10
Perihelion dist (q)0.66568582 AU ± 2.89e-08
Aphelion dist (Q)1.83168265 AU ± 2.89e-08
Orbital Period1.39533646 yr ± 1.64e-09
Physical Parameters
H (abs. magnitude)21.39
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.241″
Uncertainty0
Orbit TypeApollo
MOID0.114564 AU
Observations Used222
Oppositions4
Arc Total2009-2022
First Observation Used2009-01-16
Last Observation Used2022-12-30
Observations (231)
Date Type RA Dec Mag Band Observatory
2015-12-16 05:11:45 C 05 51 42.97 +38 45 27.8 u H21
2015-12-16 05:13:43 C 05 51 42.49 +38 45 21.9 u H21
2015-12-16 05:15:40 C 05 51 42.00 +38 45 16.1 u H21
2015-12-16 05:17:38 C 05 51 41.50 +38 45 10.5 u H21
2015-12-16 05:19:35 C 05 51 41.01 +38 45 04.9 u H21
2015-12-16 05:21:32 C 05 51 40.54 +38 44 59.0 u H21
2015-12-16 05:24:21 C 05 51 39.82 +38 44 50.6 u H21
2015-12-17 05:51:48 C 05 45 38.77 +37 28 52.4 u H21
2015-12-17 05:53:46 C 05 45 38.28 +37 28 45.9 u H21
2015-12-17 05:55:44 C 05 45 37.76 +37 28 39.4 u H21
2015-12-17 05:57:41 C 05 45 37.27 +37 28 33.3 u H21
2015-12-17 05:59:39 C 05 45 36.74 +37 28 26.7 u H21
2015-12-17 06:01:36 C 05 45 36.22 +37 28 20.1 u H21
2015-12-17 06:03:33 C 05 45 35.73 +37 28 13.7 u H21
2015-12-17 06:05:30 C 05 45 35.21 +37 28 07.4 u H21
2015-12-17 06:07:27 C 05 45 34.71 +37 28 01.1 u H21
2015-12-17 06:09:19 C 05 45 34.19 +37 27 55.1 u H21
2015-12-17 06:11:25 C 05 45 33.66 +37 27 48.5 u H21
2015-12-17 06:13:26 C 05 45 33.12 +37 27 41.8 u H21
2015-12-17 07:04:11 C 05 45 20.82 +37 25 00.2 q I52
2015-12-17 07:08:41 C 05 45 19.69 +37 24 46.2 q I52
2015-12-17 07:11:34 C 05 45 18.86 +37 24 35.9 q I52
2015-12-17 07:13:21 C 05 45 18.40 +37 24 29.9 q I52
2015-12-17 10:35:27 C 05 44 25.34 +37 13 17.4 u 926
2015-12-17 10:41:04 C 05 44 23.94 +37 12 58.8 u 926
2015-12-17 10:48:31 C 05 44 21.90 +37 12 33.7 u 926
2015-12-18 10:50:07 C 05 38 10.00 +35 48 43.7 q I52
2015-12-18 10:58:35 C 05 38 07.70 +35 48 12.3 q I52
2015-12-18 11:11:41 C 05 38 04.17 +35 47 23.4 q I52
2015-12-18 11:17:48 C 05 38 02.53 +35 47 00.6 q I52
2015-12-19 06:24:44 C 05 32 58.43 +34 34 27.1 u H21
2015-12-19 06:26:42 C 05 32 57.86 +34 34 19.3 u H21
2015-12-19 06:28:39 C 05 32 57.32 +34 34 11.5 u H21
2015-12-19 06:30:37 C 05 32 56.77 +34 34 03.9 u H21
2015-12-19 06:32:34 C 05 32 56.22 +34 33 56.2 u H21
2015-12-19 06:34:32 C 05 32 55.67 +34 33 48.6 u H21
2015-12-19 06:36:30 C 05 32 55.13 +34 33 40.7 u H21
2015-12-19 06:38:27 C 05 32 54.56 +34 33 33.0 u H21
2015-12-19 06:40:25 C 05 32 54.00 +34 33 25.1 u H21
2015-12-19 06:42:23 C 05 32 53.46 +34 33 17.2 u H21
2015-12-19 06:44:20 C 05 32 52.91 +34 33 09.4 u H21
2015-12-19 06:46:30 C 05 32 52.33 +34 33 00.9 u H21
2015-12-19 08:16:25 C 05 32 27.63 +34 27 09.5 q 703
2015-12-19 08:33:04 C 05 32 23.22 +34 26 04.5 q 703
2015-12-20 05:45:37 C 05 26 33.76 +32 58 15.8 u H21
2015-12-20 05:47:35 C 05 26 33.17 +32 58 07.3 u H21
2015-12-20 05:49:32 C 05 26 32.61 +32 57 58.5 u H21
2015-12-20 05:51:30 C 05 26 32.05 +32 57 50.5 u H21
2015-12-20 05:53:28 C 05 26 31.49 +32 57 42.0 u H21
2015-12-20 05:55:25 C 05 26 30.91 +32 57 33.7 u H21