MISSION OVERVIEW
SOLRAD (SOLar RADiation) 4B was a solar X-ray, ultraviolet, and electronic surveillance satellite. Developed by the United States Navy’s United States Naval Research Laboratory, it was the fifth in both the SOLRAD and the GRAB (Galactic Radiation And Background) programs.
LAUNCH DETAILS
VEHICLE
Scout X-2AGENCY
US NavyMISSION
SOLRAD 4B
MISSION TYPE
Astrophysics
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Space Launch Complex 5LAUNCH SITE
Vandenberg SFB, CA, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 0e2da711-13e9-4730-b109-a0833296534b
Reported date: Apr 26, 1962 at 10:49 UTC
Last synced: 2 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 — Scout X-2 →
MANUFACTURER
Vought
VARIANT
X-2
FLIGHTS
2
SUCCESSES
1
SUCCESS RATE
50%
The Scout family of rockets were were American launch vehicles designed to place small satellites into orbit around the Earth. The Scout multistage rocket was the first orbital launch vehicle to be entirely composed of solid fuel stages.
FREQUENTLY ASKED QUESTIONS
When is the Scout X-2 | SOLRAD 4B launch?
The Scout X-2 | SOLRAD 4B is scheduled for Thursday, April 26, 1962 at 10:49 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: FAILURE.
What rocket is being used for SOLRAD 4B?
The Scout X-2 | SOLRAD 4B mission uses the Scout X-2 rocket, manufactured by Vought. The Scout X-2 has flown 2 times with a 50% success rate.
Where is the Scout X-2 | SOLRAD 4B launching from?
The launch takes place from Space Launch Complex 5 at Vandenberg SFB, CA, USA.
What orbit is SOLRAD 4B going to?
The SOLRAD 4B mission is targeting Low Earth Orbit.
Who is launching SOLRAD 4B?
The Scout X-2 | SOLRAD 4B is operated by US Navy.
Can I watch the Scout X-2 | SOLRAD 4B 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 28, 2026 20:12 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 20:12 UTC
Launch date set: Apr 26, 1962 at 10:49 UTC
NET (No Earlier Than) confirmed by US Navy
Mar 28, 2026 20:12 UTC
Launch failure reported
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 2 hours ago
●Launch Library 22 hours ago
Launch ID: 0e2da711-13e9-4730-b109-a0833296534b
●Open-Meteo Weather3 hours ago
Pad weather at 34.61, -120.62
