2011 UD256

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5988969721 ± 3.37e-07
Semi-major axis (a)1.4579857974 AU ± 5.44e-08
Inclination (i)47.06166636° ± 4.05e-05
Long. of Asc. Node (Ω)216.31979156° ± 1.33e-05
Arg. of Perihelion (ω)323.05383005° ± 4.62e-05
Mean Anomaly (M)269.78799626° ± 1.89e-04
Mean Motion (n)0.5598637336°/day ± 3.13e-08
Perihelion dist (q)0.58480252 AU ± 4.92e-07
Aphelion dist (Q)2.33116908 AU ± 5.00e-07
Orbital Period1.76047532 yr ± 9.85e-08
Physical Parameters
H (abs. magnitude)19.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.395″
Uncertainty0
Orbit TypeApollo
MOID0.360303 AU
Observations Used51
Oppositions3
Arc Total2011-2018
First Observation Used2011-10-30
Last Observation Used2018-10-16
Observations (51)
Date Type RA Dec Mag Band Observatory
2018-10-16 07:56:18 C 01 56 11.68 +26 51 39.6 u H21