2015 XK261

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5809405159 ± 5.04e-08
Semi-major axis (a)2.2479968517 AU ± 1.92e-08
Inclination (i)8.08693651° ± 5.18e-06
Long. of Asc. Node (Ω)208.72556350° ± 7.40e-05
Arg. of Perihelion (ω)318.52517172° ± 7.68e-05
Mean Anomaly (M)321.77752375° ± 1.58e-05
Mean Motion (n)0.2924278479°/day ± 3.74e-09
Perihelion dist (q)0.94204440 AU ± 1.14e-07
Aphelion dist (Q)3.55394930 AU ± 1.17e-07
Orbital Period3.37049392 yr ± 4.31e-08
Physical Parameters
H (abs. magnitude)21.46
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.248″
Uncertainty0
Orbit TypeApollo
MOID0.016865 AU
Observations Used61
Oppositions7
Arc Total2015-2025
First Observation Used2015-12-07
Last Observation Used2025-11-28
Observations (61)
Date Type RA Dec Mag Band Observatory
2016-01-16 06:06:36 C 12 28 25.01 -37 27 50.7 u 807
2016-05-08 13:38:43 C 19 18 36.817 -09 45 28.91 V T12
2016-05-10 13:41:22 C 19 17 12.544 -09 23 56.77 V T12
2016-05-10 13:49:59 C 19 17 12.240 -09 23 53.01 V T12
2025-11-24 09:18:48 C 04 03 54.147 +10 35 17.36 V F52
2025-11-24 09:36:33 C 04 03 52.976 +10 35 07.07 V F52
2025-11-27 04:38:21 C 03 59 30.08 +09 55 44.7 V 291
2025-11-27 05:22:33 C 03 59 27.03 +09 55 18.5 V 291
2025-11-28 05:10:20 C 03 57 51.00 +09 41 12.7 o 291
2025-11-28 05:38:28 C 03 57 48.99 +09 40 55.6 o 291
2025-11-28 06:07:14 C 03 57 47.03 +09 40 39.0 o 291