Trajectory & orbital insertion
Ascent path is a representation — true ascent telemetry isn’t public.
Provider
US Navy
Provider type
Government
Orbit
LEO
Mission type
Test Flight
Launch site
United States of America
Date
Tue, 29 Apr 1958 02:53:00 GMT
Orbital launch #
#10 ever
Mission
Small satellite used to test the Vanguard three-stage launch vehicle.