Minor Planet Center - Asteroid Orbital Data

Complete Asteroid Data from the Minor Planet Center (MPC), updated once per month. The MPC operates at the Smithsonian Astrophysical Observatory under the auspices of Division III of the International Astronomical Union (IAU).

The MPC Orbit database contains orbital elements of minor planets that have been published in the Minor Planet Circulars, the Minor Planet Orbit Supplement and the Minor Planet Electronic Circulars.

Human-readable designation of the Asteroid.
Asteroid number or provisional designation.
Orbital semimajor axis
Eccentricity of the orbit
Inclination of the orbit to the ecliptic, J2000.0
Longitude of ascending node, J2000.0
Argument of Perihelion, J2000.0
Mean anomaly at the epoch
Epoch of the orbit (julian years)
Absolute Magnitude of the asteroid, i.e., the magnitude of the asteroid at a distance of 1 AU when viewed at a phase angle of 0°.
Orbit family this object belongs to (note that the classification is based on cuts in osculating element space and is not 100% reliable.
Discovery year for multi-opposition orbits.
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This research has made use of data and/or services provided by the International Astronomical Union's Minor Planet Center. Updated data files are available at http://www.minorplanetcenter.org/iau/mpc.html