United States Air ForceAtlas F/SVSSpace Launch Complex 3W, Vandenberg SFB, CA, USA
NTS 2
Launched
June 23, 1977
Summary
NTS 2 launched on an United States Air Force Atlas F/SVS from Space Launch Complex 3W, Vandenberg SFB, CA, USA on June 23, 1977. It was United States Air Force's 691st launch, 11th this year and humanity's 1,969th orbital launch attempt. It was the 1st Atlas F/SVS flight. The payload was bound for Medium Earth Orbit (MEO). NTS 2, one of 3 catalogued objects, reached a 167 × 20,111 km orbit inclined 63.2°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Atlas F/SVS · United States Air ForceGlobal Positioning System
- Booster
- No booster details on record.
- Mission
- Navigation · Medium Earth Orbit (MEO)
- Milestone
- 1st Atlas F/SVS flightUnited States Air Force's 691st launch11th this yearhumanity's 1,969th orbital launch attempt54th orbital launch attempt this year
Flight preview
Orbit: as tracked
NTS 2 · NORAD 10091 · 1977-053 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- NTS 2
- Object ID
- 1977-053A
- Epoch
- 1977-06-24 06:03:07 UTC
- Mean motion
- 4.09240246 rev/day
- Eccentricity
- 0.604018
- Inclination
- 63.1833°
- Ascending node
- 115.747°
- Arg. of perigee
- 157.755°
- Mean anomaly
- 247.8306°
- Element set
- 999
- Rev at epoch
- 2
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: MEO.
Catalogued objects
3 catalogued: 1 payload, 2 components; 2 still in orbit
- NTS 2 · NORAD 10091 · in orbit
Data from J. McDowell, planet4589.org
About this launch
First NAVSTAR GPS Phase I navigation satellite
Pad

Space Launch Complex 3W, Vandenberg SFB, CA, USA
51st launch from Space Launch Complex 3W, 1st this year · 451st from Vandenberg SFB, CA, USA
81 launches from this pad · 919 from Vandenberg SFB, CA, USA
418 days after the previous launch from this pad
Questions
When did NTS 2 launch?
NTS 2 launched on June 23, 1977. The time is known to the hour, not the minute.
Where can I watch NTS 2?
No webcast is on record for this launch.
What rocket launched NTS 2?
Atlas F/SVS, flown by United States Air Force. Atlas F/SVS spec sheet
Where did NTS 2 launch from?
Space Launch Complex 3W, Vandenberg SFB, CA, USA.
What orbit did NTS 2 reach?
NTS 2, one of 3 catalogued objects, reached a 167 × 20,111 km orbit inclined 63.2°.
How many satellites did NTS 2 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
Which program is NTS 2 part of?
Global Positioning System. About Global Positioning System