LOCKHEED SPACE OPERATIONS COMPANY

Space Shuttle Discovery / OV-103 | STS-39

SUCCESSApr 28, 1991 at 11:33 UTCSpace Shuttle
PADLaunch Complex 39A
SITEKennedy Space Center, FL, USA →
ORBITLow Earth Orbit
TYPEGovernment/Top Secret
PROGRAMSpace Shuttle

STS-39 was the twelfth mission of the Space Shuttle Discovery and its primary purpose was to conduct a variety of payload experiments for the Department of Defence.

VEHICLE
Space Shuttle
AGENCY
Lockheed Space Operations Company
MISSION
STS-39
MISSION TYPE
Government/Top Secret
TARGET ORBIT
Low Earth Orbit
PROGRAM
Space Shuttle
COUNTRY
USA
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 69073ef9-0809-42d7-bcac-5c33eb9f72a0
Reported date: Apr 28, 1991 at 11:33 UTC
Last synced: 6 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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OV-103SERIAL
39FLIGHTS
Low Earth OrbitDESTINATION
RetiredSTATUS
FLIGHT-PROVEN CAPSULE

Space Shuttle Discovery (Orbiter Vehicle Designation: OV-103) is one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first…

CREW MANIFEST
Michael CoatsCommander
Lloyd HammondPilot
Charles L. VeachMission Specialist
Donald R. McMonagleMission Specialist
Richard HiebMission Specialist
Gregory HarbaughMission Specialist
Guion BlufordMission Specialist
MANUFACTURER
National Aeronautics and Space Administration
FLIGHTS
135
SUCCESSES
133
SUCCESS RATE
98.5%

The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program name was Space Transportation System (STS). Five complete Space Shuttle orbiter vehicles were built and flown on a total of 135 missions from 1981 to 2011.

When is the Space Shuttle Discovery / OV-103 | STS-39 launch?
The Space Shuttle Discovery / OV-103 | STS-39 is scheduled for Sunday, April 28, 1991 at 11:33 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 STS-39?
The Space Shuttle Discovery / OV-103 | STS-39 mission uses the Space Shuttle rocket, manufactured by National Aeronautics and Space Administration. The Space Shuttle has flown 135 times with a 98.5% success rate.
Where is the Space Shuttle Discovery / OV-103 | STS-39 launching from?
The launch takes place from Launch Complex 39A at Kennedy Space Center, FL, USA.
What orbit is STS-39 going to?
The STS-39 mission is targeting Low Earth Orbit.
Who is launching STS-39?
The Space Shuttle Discovery / OV-103 | STS-39 is operated by Lockheed Space Operations Company. It is part of the Space Shuttle program.
Can I watch the Space Shuttle Discovery / OV-103 | STS-39 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 03:06 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 03:06 UTC
Launch date set: Apr 28, 1991 at 11:33 UTC
NET (No Earlier Than) confirmed by Lockheed Space Operations Company
Mar 29, 2026 03:06 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 6 hours ago
Launch Library 26 hours ago
Launch ID: 69073ef9-0809-42d7-bcac-5c33eb9f72a0
Open-Meteo Weather6 hours ago
Pad weather at 28.61, -80.6
YouTube Video Search3 weeks ago
1 video discovered

Mission Profile

STS-39 was a Space Shuttle mission operated by Lockheed Space Operations Company that lifted off from Launch Complex 39A, Kennedy Space Center, FL, USA on April 28, 1991. The flight carried its payload on a government/top secret mission to Low Earth Orbit. It was flown as part of the Space Shuttle program. The launch was a success.