2008 ER90

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1757664227 ± 1.47e-04
Semi-major axis (a)1.5715280481 AU ± 4.58e-04
Inclination (i)20.39324514° ± 9.95e-03
Long. of Asc. Node (Ω)176.44048877° ± 2.13e-03
Arg. of Perihelion (ω)12.36965494° ± 6.70e-03
Mean Anomaly (M)345.44285610° ± 1.42e+00
Mean Motion (n)0.5002983509°/day ± 2.19e-04
Perihelion dist (q)1.29530618 AU ± 4.43e-04
Aphelion dist (Q)1.84774991 AU ± 5.86e-04
Orbital Period1.97007702 yr ± 8.61e-04
Physical Parameters
H (abs. magnitude)24.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.149″
Uncertainty4
Orbit TypeAmor
MOID0.302429 AU
Observations Used9
Oppositions1
Arc Total2008-2008
First Observation Used2008-03-11
Last Observation Used2008-03-28
Observations (9)
Date Type RA Dec Mag Band Observatory
2008-03-11 13:50:52 C 13 00 39.468 -05 12 56.87 o 568
2008-03-11 13:57:24 C 13 00 39.678 -05 12 40.56 o 568
2008-03-13 13:40:48 C 13 02 28.018 -03 12 03.01 o 568
2008-03-13 13:47:50 C 13 02 28.229 -03 11 44.91 o 568
2008-03-13 13:57:16 C 13 02 28.508 -03 11 20.53 o 568
2008-03-14 11:45:45 C 13 03 16.481 -02 14 40.02 o 568
2008-03-14 11:49:53 C 13 03 16.589 -02 14 29.15 o 568
2008-03-28 07:42:51 C 13 12 18.109 +12 57 33.70 o 568
2008-03-28 07:54:58 C 13 12 18.283 +12 58 06.61 o 568