2004 ER21
Explore asteroids, comets and near-Earth objects with JPL orbital data.
Aten
Observations: 70
Orbital Parameters
Semi-Major Axis
0.899 AU
Eccentricity
0.171
Perihelion
0.745 AU
Aphelion
1.052729 AU
Inclination
7.95°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
219.02°
Physical Parameters
Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.4
Orbit Quality
RMS
0.50566
Condition
7
Orbit ID
—