(405) Thia Main-belt Asteroid

Discovered on 23 July 1895 by A. Charlois at Nice.

Where Thia is today

MercuryVenusEarthEarthMarsMarsThiaThia

Seen from above the solar system on 2026-10-14: Thia is 2.50 au from the Sun and 2.63 au from Earth. Computed from JPL's orbital elements.

Facts

Number405
Provisional designationA895 OB
Orbit classMain-belt Asteroid
Diameter109 km (#201 largest of 17,440 named asteroids with a measured size)
Albedo0.0180
Rotation period9.95 hours
Spectral typeC
Absolute magnitude (H)8.79
Orbital period4.16 years
Semi-major axis2.58 au
Perihelion – aphelion1.96 – 3.21 au
Eccentricity0.243
Inclination11.9°
Closest distance between its orbit and Earth's (MOID)0.976 au

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

More named asteroids discovered by A. Charlois