(121659) Blairrussell Main-belt Asteroid

Discovered on 5 December 1999 by CSS at Catalina.

Blair Russell (b. 1970) provided mechanical engineering oversight of hardware development for the OSIRIS-REx Asteroid Sample Return Mission. Working closely with spacecraft and instrument teams, he ensured a robust, structurally sound mechanical system. Prior to this work he supported the GPM and JWST Missions.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL

Where Blairrussell is today

MercuryVenusEarthEarthMarsMarsBlairrussellBlairrussell

Seen from above the solar system on 2026-10-14: Blairrussell is 2.86 au from the Sun and 2.89 au from Earth. Computed from JPL's orbital elements.

Facts

Number121659
Provisional designation1999 XX10
Orbit classMain-belt Asteroid
Diameter4.30 km (#12,057 largest of 17,440 named asteroids with a measured size)
Albedo0.219
Absolute magnitude (H)14.47
Orbital period5.63 years
Semi-major axis3.16 au
Perihelion – aphelion2.40 – 3.92 au
Eccentricity0.240
Inclination15.7°
Closest distance between its orbit and Earth's (MOID)1.44 au

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

Also named after someone called Blair

Also discovered on 5 December 1999

More named asteroids discovered by CSS