NTS-2 (P76-4), a U.S. Naval Research Laboratory Navigation Technology Satellite and first NAVSTAR GPS Phase I spacecraft. Atlas-F SGS-1 (maiden Atlas F/SVS) from Vandenberg SLC-3W placed the ~430 kg craft in MEO with cesium clocks to test GPS concepts and relativistic clock effects.
- Outcome
- Success
- Orbit
- MEO
- Medium Earth orbit
- Payload to orbit
- 947 kg
- Flight
- 1st
- of 7 Atlas F/SVS flights
- Date and time
- 23 June 1977, 08:17 UTC
- Rocket
- Atlas F/SVS
- Builder
- Convair
- Launch site
- Space Launch Complex 3W, Vandenberg SFB, CA, USA
- Payload
- Navigation
- International designator
- 1977-053
- Launches in 1977
- 54th of 130
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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