(322) Phaeo Main-belt Asteroid

Discovered on 27 November 1891 by A. Borrelly at Marseilles.

Where Phaeo is today

MercuryVenusEarthEarthMarsMarsPhaeoPhaeo

Seen from above the solar system on 2026-10-14: Phaeo is 2.52 au from the Sun and 2.33 au from Earth. Computed from JPL's orbital elements.

Facts

Number322
Provisional designationA891 WB
Orbit classMain-belt Asteroid
Diameter69.9 km (#471 largest of 17,440 named asteroids with a measured size)
Albedo0.0890
Rotation period17.6 hours
Spectral typeX
Absolute magnitude (H)9.15
Orbital period4.64 years
Semi-major axis2.78 au
Perihelion – aphelion2.10 – 3.46 au
Eccentricity0.244
Inclination8.05°
Closest distance between its orbit and Earth's (MOID)1.12 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

More named asteroids discovered by A. Borrelly