Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 2.586 AU
  • Eccentricity: 0.1662
  • Inclination: 9.12 deg
  • Longitude of Ascending Node: 86.12 deg
  • Argument of Periapsis: 97.8 deg
  • Mean Anomaly: 259.8 deg

Physical Characteristics

  • Diameter: 152.00000 km
  • Magnitude: 6.5
  • Albedo: 0.159
  • Spectral type (Tholen): S
  • Spectral type (SMASS): S

Shape Model Characteristics

At 2434741.0 JD:
  • Spin period in hours: 15.02987
  • Spin latitude: -15.0
  • Spin longitude: -15.0
  • Spin angle: 0.0
  • Quality level: 4.0

This shape model of asteroid Irene is provided by the DAMIT database from The Astronomical Institute of the Charles University in Prague, Czechia.

The model is rotated on its Z axis for the purpose of this visualization, which may not reflect actual rotation.