Project Vanguard - Launch History

Launch History

Test vehicle launches

The first Vanguard flight, a successful suborbital test of the TV-0 single-stage vehicle, was launched on December 8, 1956. On May 1, 1957, the two-stage test vehicle TV-1 was successfully launched. Vanguard TV-2, another suborbital test, was launched October 23, 1957.

The Vanguard rocket launched three satellites out of eleven launch attempts:

  1. Vanguard TV3 - December 6, 1957 - Failed to orbit 1.36 kg (3 lb) satellite
  2. Vanguard TV3 Backup - February 5, 1958 - Failed to orbit 1.36 kg (3 lb) satellite
  3. Vanguard 1 - March 17, 1958 - Orbited 1.47 kg (3.25 lb) satellite
  4. Vanguard TV5 - April 28, 1958 - Failed to orbit 9.98 kg (22 lb) satellite
  5. Vanguard SLV 1 - May 27, 1958 - Failed to orbit 9.98 kg (22 lb) satellite
  6. Vanguard SLV 2 - June 26, 1958 - Failed to orbit 9.98 kg (22 lb) satellite
  7. Vanguard SLV 3 - September 26, 1958 - Failed to orbit 9.98 kg (22 lb) satellite
  8. Vanguard 2 - February 17, 1959 - Orbited 10.8 kg (23.7 lb) satellite
  9. Vanguard SLV 5 - April 13, 1959 - Failed to orbit 10.3 kg (22 lb 11 oz) satellite
  10. Vanguard SLV 6 - June 22, 1959 - Failed to orbit 10.3 kg (22 lb 11 oz) satellite
  11. Vanguard 3 - September 18, 1959 - Orbited 22.7 kg (50 lb) satellite

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