Irene

Explore asteroids, comets and near-Earth objects with JPL orbital data.

asteroid Discovered: 1851-05-20 Observations: 3,696

Orbital Parameters

Semi-Major Axis

2.588 AU

Eccentricity

0.1628

Perihelion

2.167 AU

Aphelion

3.009326 AU

Inclination

9.13°

Orbital Period

4.1615 yr

Epoch

2461200.5

Mean Anomaly

60.23°

Physical Parameters

Diameter

152.0 km

Albedo

0.159

Density

— g/cm³

Rotation Period

15.028 h

Absolute Magnitude

6.55

Orbit Quality

RMS

0.52543

Condition

0

Orbit ID

—