2008 ER

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2570280114 ± 7.17e-08
Semi-major axis (a)1.2155242837 AU ± 3.35e-09
Inclination (i)9.40893577° ± 1.87e-05
Long. of Asc. Node (Ω)144.57690445° ± 4.19e-05
Arg. of Perihelion (ω)167.18912969° ± 4.38e-05
Mean Anomaly (M)316.48463608° ± 3.27e-05
Mean Motion (n)0.7354731403°/day ± 3.04e-09
Perihelion dist (q)0.90310049 AU ± 8.72e-08
Aphelion dist (Q)1.52794807 AU ± 8.73e-08
Orbital Period1.34012546 yr ± 5.54e-09
Physical Parameters
H (abs. magnitude)21.42
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.356″
Uncertainty0
Orbit TypeApollo
MOID0.093209 AU
Observations Used59
Oppositions4
Arc Total2008-2024
First Observation Used2008-03-02
Last Observation Used2024-02-14
Observations (61)
Date Type RA Dec Mag Band Observatory
2020-03-22 02:57:28 C 09 27 34.52 +24 25 14.6 u H21
2024-02-09 08:11:08 C 10 01 33.570 +11 12 37.47 X F52
2024-02-09 08:27:53 C 10 01 32.208 +11 12 54.09 X F52
2024-02-09 09:01:23 C 10 01 29.478 +11 13 26.99 X F52
2024-02-10 13:06:03 C 09 59 15.750 +11 41 01.26 X F52
2024-02-10 13:21:58 C 09 59 14.417 +11 41 16.98 X F52
2024-02-10 13:38:05 C 09 59 13.068 +11 41 32.27 X F52
2024-02-14 08:20:46 C 09 51 49.768 +13 12 20.32 X F52
2024-02-14 08:37:32 C 09 51 48.315 +13 12 37.29 X F52
2024-02-14 08:54:18 C 09 51 46.845 +13 12 54.44 X F52
2024-02-14 09:11:07 C 09 51 45.379 +13 13 11.25 X F52