(457) Alleghenia Main-belt Asteroid

Discovered on 15 September 1900 by Wolf, M. F., Schwassmann, A. at Heidelberg.

Where Alleghenia is today

MercuryVenusEarthEarthMarsMarsAllegheniaAlleghenia

Seen from above the solar system on 2026-10-14: Alleghenia is 2.87 au from the Sun and 2.75 au from Earth. Computed from JPL's orbital elements.

Facts

Number457
Provisional designationA900 RA
Orbit classMain-belt Asteroid
Diameter18.7 km (#2,385 largest of 17,440 named asteroids with a measured size)
Albedo0.208
Rotation period22.0 hours
Absolute magnitude (H)11.1
Orbital period5.44 years
Semi-major axis3.09 au
Perihelion – aphelion2.57 – 3.62 au
Eccentricity0.171
Inclination13.0°
Closest distance between its orbit and Earth's (MOID)1.59 au

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

More named asteroids discovered by Wolf, M. F., Schwassmann, A.