(666) Desdemona Main-belt Asteroid

Discovered on 23 July 1908 by A. Kopff at Heidelberg.

Where Desdemona is today

MercuryVenusEarthEarthMarsMarsDesdemonaDesdemona

Seen from above the solar system on 2026-10-14: Desdemona is 2.44 au from the Sun and 2.75 au from Earth. Computed from JPL's orbital elements.

Facts

Number666
Provisional designationA908 OG
Orbit classMain-belt Asteroid
Diameter32.7 km (#1,240 largest of 17,440 named asteroids with a measured size)
Albedo0.0950
Rotation period14.6 hours
Absolute magnitude (H)10.7
Orbital period4.18 years
Semi-major axis2.59 au
Perihelion – aphelion1.98 – 3.21 au
Eccentricity0.236
Inclination7.58°
Closest distance between its orbit and Earth's (MOID)0.986 au

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

Also discovered on 23 July 1908

More named asteroids discovered by A. Kopff