MISSION OVERVIEW
Japanese domestic communications
LAUNCH DETAILS
VEHICLE
Atlas IIAS
AGENCY
Lockheed MartinMISSION
JCSAT 4A
MISSION TYPE
Communications
TARGET ORBIT
Geosynchronous Orbit
LAUNCH PAD
Launch Complex 36ALAUNCH SITE
Cape Canaveral SFS, FL, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: a4379179-3913-47bc-b03e-32625359721c
Reported date: Feb 16, 1999 at 01:45 UTC
Last synced: 7 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE
MANUFACTURER
Lockheed Martin
VARIANT
IIAS
FLIGHTS
30
SUCCESSES
30
SUCCESS RATE
100%
Atlas II was a member of the Atlas family of launch vehicles, which evolved from the successful Atlas missile program of the 1950s. It was designed to launch payloads into low earth orbit, geosynchronous transfer orbit or geosynchronous orbit. Sixty-three launches of the Atlas II, IIA and IIAS models were carried out between 1991 and 2004; all sixty-three launches were successes, making the Atlas II the most reliable launch system in history.
FREQUENTLY ASKED QUESTIONS
When is the Atlas IIAS | JCSAT 4A launch?
The Atlas IIAS | JCSAT 4A is scheduled for Tuesday, February 16, 1999 at 1:45 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 JCSAT 4A?
The Atlas IIAS | JCSAT 4A mission uses the Atlas IIAS rocket, manufactured by Lockheed Martin. The Atlas IIAS has flown 30 times with a 100% success rate.
Where is the Atlas IIAS | JCSAT 4A launching from?
The launch takes place from Launch Complex 36A at Cape Canaveral SFS, FL, USA.
What orbit is JCSAT 4A going to?
The JCSAT 4A mission is targeting Geosynchronous Orbit.
Who is launching JCSAT 4A?
The Atlas IIAS | JCSAT 4A is operated by Lockheed Martin.
Can I watch the Atlas IIAS | JCSAT 4A 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.
LAUNCH TIMELINE
Mar 29, 2026 01:16 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 01:16 UTC
Launch date set: Feb 16, 1999 at 01:45 UTC
NET (No Earlier Than) confirmed by Lockheed Martin
Mar 29, 2026 01:16 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 7 hours ago
●Launch Library 219 hours ago
Launch ID: a4379179-3913-47bc-b03e-32625359721c
●Open-Meteo Weather19 hours ago
Pad weather at 28.47, -80.54
Mission Profile
JCSAT 4A was a Atlas IIAS mission operated by Lockheed Martin that lifted off from Launch Complex 36A, Cape Canaveral SFS, FL, USA on February 16, 1999. The flight carried its payload on a communications mission to Geosynchronous Orbit. The launch was a success.