356991 (1998 QA1)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5342592316 ± 5.91e-08
Semi-major axis (a)2.1018872400 AU ± 3.24e-08
Inclination (i)8.19293884° ± 1.22e-05
Long. of Asc. Node (Ω)298.84659667° ± 7.09e-05
Arg. of Perihelion (ω)333.18255171° ± 6.78e-05
Mean Anomaly (M)353.18827135° ± 7.09e-05
Mean Motion (n)0.3234432972°/day ± 7.48e-09
Perihelion dist (q)0.97893458 AU ± 1.25e-07
Aphelion dist (Q)3.22483990 AU ± 1.34e-07
Orbital Period3.04729234 yr ± 7.05e-08
Physical Parameters
H (abs. magnitude)19.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.481″
Uncertainty0
Orbit TypeApollo
MOID0.000401 AU
Observations Used201
Oppositions17
Arc Total1998-2023
First Observation Used1998-08-19
Last Observation Used2023-11-19
Observations (202)
Date Type RA Dec Mag Band Observatory
2023-11-19 21:23:15 C 04 42 41.43 +31 48 09.5 V O18
2023-11-19 21:29:30 C 04 42 41.09 +31 48 08.8 V O18