(1578) Kirkwood Outer Main-belt Asteroid

Discovered on 10 January 1951 by Indiana University at Brooklyn.

Where Kirkwood is today

MercuryVenusEarthEarthMarsMarsJupiterJupiterKirkwoodKirkwood

Seen from above the solar system on 2026-10-14: Kirkwood is 4.35 au from the Sun and 4.16 au from Earth. Computed from JPL's orbital elements.

Facts

Number1578
Provisional designation1951 AT
Orbit classOuter Main-belt Asteroid
Diameter47.1 km (#811 largest of 17,440 named asteroids with a measured size)
Albedo0.0630
Rotation period17.9 hours
Spectral typeD
Absolute magnitude (H)10.16
Orbital period7.79 years
Semi-major axis3.93 au
Perihelion – aphelion2.98 – 4.88 au
Eccentricity0.241
Inclination0.807°
Closest distance between its orbit and Earth's (MOID)2.00 au

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

Also discovered on 10 January 1951

More named asteroids discovered by Indiana University