Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Return to search results

BINARY MINOR PLANETS V3.0

Published by National Aeronautics and Space Administration | National Aeronautics and Space Administration | Metadata Last Checked: August 03, 2025 | Last Modified: 2025-07-17
We present data tables giving basic orbital and physical parameters for well-observed or suspected binary/multiple minor planets and the Pluto system, based on a literature review. In total 194 companions in 183 systems are included. Listed data include: minor planet number, name, provisional designation, and dynamical type; heliocentric orbit semimajor axis, eccentricity, and inclination; primary and secondary diameter; primary spin period and albedo; companion orbit semimajor axis and orbital period; system mass and density; secondary designation; discovery method and year of announcement; and year of last update. This data set is complete for binary/multiple components reported through 31 March 2010.

Find Related Datasets

Click any tag below to search for similar datasets

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov