UNITED STATES AIR FORCE

Atlas E/SGS-2 | GPS 11

SUCCESSOct 9, 1985 at 02:53 UTCAtlas E/SGS-2
PADSpace Launch Complex 3W
SITEVandenberg SFB, CA, USA →
ORBITMedium Earth Orbit
TYPENavigation
PROGRAMGlobal Positioning System

First generation GPS satellite

VEHICLE
Atlas E/SGS-2
MISSION
GPS 11
MISSION TYPE
Navigation
TARGET ORBIT
Medium Earth Orbit
PROGRAM
Global Positioning System
COUNTRY
USA
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 98a18f06-c2a0-4398-bebd-57d8dbfaee53
Reported date: Oct 9, 1985 at 02:53 UTC
Last synced: 9 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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MANUFACTURER
Convair
VARIANT
E/SGS-2
FLIGHTS
4
SUCCESSES
4
SUCCESS RATE
100%

The Atlas E/F (or SB-1A) was an American expendable launch system and sounding rocket built using parts of decommissioned SM-65 Atlas missiles. It was a member of the Atlas family of rockets.

When is the Atlas E/SGS-2 | GPS 11 launch?
The Atlas E/SGS-2 | GPS 11 is scheduled for Wednesday, October 9, 1985 at 2:53 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for GPS 11?
The Atlas E/SGS-2 | GPS 11 mission uses the Atlas E/SGS-2 rocket, manufactured by Convair. The Atlas E/SGS-2 has flown 4 times with a 100% success rate.
Where is the Atlas E/SGS-2 | GPS 11 launching from?
The launch takes place from Space Launch Complex 3W at Vandenberg SFB, CA, USA.
What orbit is GPS 11 going to?
The GPS 11 mission is targeting Medium Earth Orbit.
Who is launching GPS 11?
The Atlas E/SGS-2 | GPS 11 is operated by United States Air Force. It is part of the Global Positioning System program.
Can I watch the Atlas E/SGS-2 | GPS 11 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Mar 29, 2026 23:45 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 23:45 UTC
Launch date set: Oct 9, 1985 at 02:53 UTC
NET (No Earlier Than) confirmed by United States Air Force
Mar 29, 2026 23:45 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 9 hours ago
Launch Library 29 hours ago
Launch ID: 98a18f06-c2a0-4398-bebd-57d8dbfaee53
Open-Meteo Weather10 hours ago
Pad weather at 34.64, -120.59