(285) Regina Main-belt Asteroid

Discovered on 3 August 1889 by A. Charlois at Nice.

Where Regina is today

MercuryVenusEarthEarthMarsMarsReginaRegina

Seen from above the solar system on 2026-10-14: Regina is 3.26 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.

Facts

Number285
Provisional designationA889 PA
Orbit classMain-belt Asteroid
Diameter47.2 km (#809 largest of 17,440 named asteroids with a measured size)
Albedo0.0500
Rotation period9.54 hours
Absolute magnitude (H)10.93
Orbital period5.42 years
Semi-major axis3.09 au
Perihelion – aphelion2.46 – 3.71 au
Eccentricity0.203
Inclination17.6°
Closest distance between its orbit and Earth's (MOID)1.45 au

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

Also discovered on 3 August 1889

More named asteroids discovered by A. Charlois