(390) Alma Main-belt Asteroid

Discovered on 24 March 1894 by G. Bigourdan at Paris.

Where Alma is today

MercuryVenusEarthEarthMarsMarsAlmaAlma

Seen from above the solar system on 2026-10-14: Alma is 2.72 au from the Sun and 1.77 au from Earth. Computed from JPL's orbital elements.

Facts

Number390
Provisional designationA894 FA
Orbit classMain-belt Asteroid
Diameter25.7 km (#1,639 largest of 17,440 named asteroids with a measured size)
Albedo0.268
Rotation period3.74 hours
Spectral typeDT
Absolute magnitude (H)10.19
Orbital period4.32 years
Semi-major axis2.65 au
Perihelion – aphelion2.30 – 3.00 au
Eccentricity0.132
Inclination12.1°
Closest distance between its orbit and Earth's (MOID)1.32 au

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