IAA RAS IAA Minor Planet Database

2015 XN261

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1637763794 ± 1.22e-05
Semi-major axis (a)0.9740193031 AU ± 1.20e-06
Inclination (i)2.32164247° ± 1.25e-04
Long. of Asc. Node (Ω)278.46821136° ± 1.90e-04
Arg. of Perihelion (ω)274.93536053° ± 6.66e-04
Mean Anomaly (M)28.40313967° ± 7.41e-03
Mean Motion (n)1.0253235451°/day ± 1.90e-06
Perihelion dist (q)0.81449795 AU ± 1.20e-05
Aphelion dist (Q)1.13354066 AU ± 1.20e-05
Orbital Period0.96128319 yr ± 1.78e-06
Physical Parameters
H (abs. magnitude)26.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.307″
Uncertainty1
Orbit TypeAten
MOID0.005478 AU
Observations Used162
Oppositions1
Arc Total2015-2015
First Observation Used2015-12-10
Last Observation Used2015-12-22
Observations (166)
Date Type RA Dec Mag Band Observatory
2015-12-21 02:07:56 C 03 02 42.90 +65 50 11.2 – u 926
2015-12-21 02:09:52 C 03 02 32.76 +65 50 27.2 – u 926
2015-12-21 02:26:26 C 03 01 06.08 +65 52 39.1 – u 926
2015-12-21 02:28:25 C 03 00 55.87 +65 52 54.8 – u 926
2015-12-21 02:30:21 C 03 00 45.39 +65 53 09.8 – u 926
2015-12-21 02:32:20 C 03 00 35.05 +65 53 24.9 – u 926
2015-12-21 02:34:18 C 03 00 24.74 +65 53 40.1 – u 926
2015-12-21 02:36:16 C 03 00 14.40 +65 53 54.9 – u 926
2015-12-21 03:36:38 C 02 54 48.41 +66 00 54.0 – u 926
2015-12-21 03:38:38 C 02 54 37.66 +66 01 05.9 – u 926
2015-12-21 03:40:34 C 02 54 26.90 +66 01 18.1 – u 926
2015-12-22 02:51:42 C 00 34 45.67 +64 34 58.9 – u 926
2015-12-22 02:54:04 C 00 34 28.71 +64 34 18.1 – u 926
2015-12-22 02:56:24 C 00 34 11.91 +64 33 36.8 – u 926
2015-12-22 06:24:05 C 00 10 23.36 +63 17 21.4 – t 705
2015-12-22 06:25:57 C 00 10 11.55 +63 16 35.0 – t 705