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
2022-11-23 08:39:46 C 08 04 05.90 +40 39 01.0 u H21
2022-11-23 08:56:20 C 08 04 06.37 +40 38 47.2 u H21
2022-12-17 05:09:50 C 08 05 17.46 +18 32 17.6 X C95
2022-12-17 05:40:00 C 08 05 15.67 +18 29 29.2 X C95
2022-12-17 10:57:13 C 08 04 59.639 +17 59 56.36 V G96
2022-12-17 11:04:36 C 08 04 59.149 +17 59 14.14 V G96
2022-12-17 11:11:59 C 08 04 58.667 +17 58 31.98 V G96
2022-12-17 11:19:23 C 08 04 58.181 +17 57 49.75 V G96
2022-12-17 19:02:30 C 08 04 32.85 +17 13 07.1 V D29
2022-12-17 19:22:51 C 08 04 31.48 +17 11 07.0 V D29
2022-12-17 19:43:13 C 08 04 30.06 +17 09 06.3 V D29
2022-12-19 09:34:47 C 08 02 05.420 +13 06 05.36 V 703
2022-12-19 09:42:23 C 08 02 04.726 +13 05 12.88 V 703
2022-12-19 09:50:00 C 08 02 04.117 +13 04 18.98 V 703
2022-12-19 09:57:36 C 08 02 03.538 +13 03 26.82 V 703
2022-12-20 01:26:07 C 08 00 54.550 +11 12 44.96 V M22
2022-12-20 01:31:19 C 08 00 54.053 +11 12 05.62 V M22
2022-12-20 01:40:25 C 08 00 53.239 +11 10 58.33 V M22
2022-12-20 01:52:52 C 08 00 52.116 +11 09 24.88 V M22
2022-12-21 18:14:54 C 07 57 24.81 +05 39 07.9 V D29
2022-12-21 18:55:38 C 07 57 20.30 +05 33 06.1 V D29
2022-12-22 04:39:07 C 07 56 25.795 +04 05 43.66 V W68
2022-12-22 04:41:43 C 07 56 25.430 +04 05 18.71 V W68
2022-12-22 04:46:15 C 07 56 24.890 +04 04 36.73 V W68
2022-12-22 04:54:41 C 07 56 23.962 +04 03 18.86 V W68
2022-12-23 18:36:08 C 07 52 12.25 -02 15 25.1 V D29
2022-12-23 18:55:14 C 07 52 09.65 -02 18 51.5 V D29
2022-12-23 19:15:36 C 07 52 06.87 -02 22 31.0 V D29
2022-12-30 01:07:32 C 07 24 48.984 -35 12 51.66 V M22
2022-12-30 01:20:34 C 07 24 45.302 -35 15 55.73 V M22
2022-12-30 01:36:05 C 07 24 40.874 -35 19 35.44 V M22