6491 (1991 OA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5920990134 ± 2.52e-08
Semi-major axis (a)2.5041111413 AU ± 3.65e-08
Inclination (i)6.15330225° ± 5.40e-06
Long. of Asc. Node (Ω)299.98303593° ± 3.46e-05
Arg. of Perihelion (ω)326.20871077° ± 3.65e-05
Mean Anomaly (M)240.15199579° ± 1.51e-05
Mean Motion (n)0.2487321223°/day ± 5.43e-09
Perihelion dist (q)1.02142941 AU ± 6.47e-08
Aphelion dist (Q)3.98679288 AU ± 8.57e-08
Orbital Period3.96260151 yr ± 8.65e-08
Physical Parameters
H (abs. magnitude)18.72
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.423″
Uncertainty0
Orbit TypeAmor
MOID0.037293 AU
Observations Used186
Oppositions21
Arc Total1991-2019
First Observation Used1991-03-18
Last Observation Used2019-10-08