2018 ER4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4641791000
Semi-major axis (a)1.9030483000 AU
Inclination (i)2.32236000°
Long. of Asc. Node (Ω)359.90165000°
Arg. of Perihelion (ω)220.68417000°
Mean Anomaly (M)314.57242000°
Mean Motion (n)0.3754303400°/day
Perihelion dist (q)1.01969310 AU
Aphelion dist (Q)2.78640350 AU
Orbital Period2.62527450 yr
Physical Parameters
H (abs. magnitude)22.20
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.350″
Uncertainty4
Orbit TypeAmor
MOID0.027864 AU
Observations Used56
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-06-20
Observations (57)
Date Type RA Dec Mag Band Observatory
2018-05-21 03:51:56 C 10 14 42.59 -19 28 29.7 U I52
2018-06-03 09:46:49 C 13 29 18.69 -48 07 12.7 q E08
2018-06-03 09:58:20 C 13 29 27.79 -48 07 44.1 q E08
2018-06-03 10:09:52 C 13 29 36.82 -48 08 16.1 q E08
2018-06-20 23:37:20 C 17 14 38.53 -44 03 34.0 U 807
2018-06-20 23:39:18 C 17 14 39.00 -44 03 31.8 U 807
2018-06-20 23:42:13 C 17 14 39.67 -44 03 28.1 U 807