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Vanguard I

retired

Technology DemonstrationMEOCOSPAR 1958 BET 2Launched 3/17/1958

Mission & Launch

Launch Mission: Vanguard I
Launch Vehicle: Vanguard
Launch Date: 3/17/1958
Last Contact: 3/22/1964

Orbit & Mass

Orbit Class: MEO
Altitude: 2,296 km
Inclination: 34.25 deg
Dry Mass: 2 kg
Total Mass: 2 kg

Payload Classification

Mission Type: Technology Demonstration
Payload Category: TECH
Payload Class: C

Organizations

Operator: U.S. Naval Research Lab
Manufacturer: U.S. Naval Research Lab

Registry

COSPAR ID: 1958 BET 2
UN Registration: A/AC.105/INF.001