1998 SU4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5804568307 ± 2.22e-06
Semi-major axis (a)1.1479069440 AU ± 2.61e-08
Inclination (i)23.14380230° ± 1.64e-04
Long. of Asc. Node (Ω)350.55508547° ± 2.27e-05
Arg. of Perihelion (ω)241.88207152° ± 2.36e-04
Mean Anomaly (M)85.75302351° ± 9.49e-05
Mean Motion (n)0.8014053763°/day ± 2.73e-08
Perihelion dist (q)0.48159652 AU ± 2.55e-06
Aphelion dist (Q)1.81421737 AU ± 2.55e-06
Orbital Period1.22987231 yr ± 4.19e-08
NGA Modelr2
A2-6.02677485e-14 ± 2.20e-14 AU/d²
Physical Parameters
H (abs. magnitude)21.41
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.414″
Uncertainty0
Orbit TypeApollo
MOID0.018894 AU
Observations Used94
Oppositions5
Arc Total1998-2025
First Observation Used1998-09-19
Last Observation Used2025-11-11
Observations (101)
Date Type RA Dec Mag Band Observatory
2025-11-11 03:19:10 C 21 27 12.133 -00 55 16.53 W G37