Vanguard SLV-1
Launch Failure
Liftoff Time (GMT)
03:46:20
Wednesday May 28, 1958
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Mission Details
Launch Notes
A 2nd stage attitude control failure prevented the 3rd stage from entering the correct angle for orbital insertion.
Vanguard SLV-1
The objective of the Vanguard SLV1 and SLV2 satellites was to launch into orbit a fully instrumented, 20in, 10 kg Lyman-alpha satellite. This satellite was to study solar Lyman-alpha radiation and to make certain space environment measurements; it was identical to the Vanguard x-ray satellite of TV-5 except that it covered the 1100 to 1300 Å wavelength bands.
Medium Earth Orbit
1 Payload
10 kilograms
Launch Site
Stats
Vanguard
5th
Mission
4th
Mission of 1958
1958
9th
Orbital launch attempt