Satellite, Vanguard 1, Backup


Display Status:

This object is on display in the Space Science exhibition at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Collection Item Summary:

Flight back-up of the Vanguard 1 satellite built by the Naval Research Laboratory. Vanguard 1 was successfully launched on 17 March 1958, after an initial failure the preceding December. This backup satellite was donated to NASM in December 1975 by the former Vanguard Project Director, Dr. John P. Hagen. The satellite has been exhibited at NASM as well as by the U.S. Information Agency (1976) and at the Kansas Cosmophere and Discovery Center (1982-1985).

Collection Item Long Description:

Inventory Number


Credit Line

Gift of Dr. John P. Hagen

Country of Origin

United States of America




Overall: 6 in. wide x 1 ft. deep, 3.3 lb. (15.24 x 30.48cm, 1.5kg)

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum