ARMY BALLISTIC MISSILE AGENCY
Juno-I | Explorer 3
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Mar 26, 1958 at 17:38 UTC
▸ Flight profile›
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MISSION OVERVIEW
Small satellite launched into an eccentric orbit with a cosmic ray counter and a micrometeorite detector.
LAUNCH DETAILS
VEHICLE
Juno-IMISSION
Explorer 3
MISSION TYPE
Earth Science
TARGET ORBIT
Elliptical Orbit
LAUNCH PAD
Launch Complex 26ALAUNCH SITE
Cape Canaveral SFS, FL, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: b4e501ff-083c-47d6-9ff0-63ec1bf035c3
Reported date: Mar 26, 1958 at 17:38 UTC
Last synced: 12 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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DEEP SPACE PROBE →
Juno
Jupiter
NASA / JPLOPERATOR
OrbiterTYPE
5.2851 AUFROM SUN
EXTENDED MISSION
VEHICLE — Juno-I →
MANUFACTURER
Chrysler
VARIANT
Juno I
FLIGHTS
6
SUCCESSES
3
SUCCESS RATE
50%
The Juno I was a four-stage American booster rocket which launched America's first satellite, Explorer 1 in 1958. A member of thr redstone family, it was derived from the Jupiter-C sounding rocket.
FREQUENTLY ASKED QUESTIONS
When is the Juno-I | Explorer 3 launch?
The Juno-I | Explorer 3 is scheduled for Wednesday, March 26, 1958 at 5:38 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Explorer 3?
The Juno-I | Explorer 3 mission uses the Juno-I rocket, manufactured by Chrysler. The Juno-I has flown 6 times with a 50% success rate.
Where is the Juno-I | Explorer 3 launching from?
The launch takes place from Launch Complex 26A at Cape Canaveral SFS, FL, USA.
What orbit is Explorer 3 going to?
The Explorer 3 mission is targeting Elliptical Orbit.
Who is launching Explorer 3?
The Juno-I | Explorer 3 is operated by Army Ballistic Missile Agency.
Can I watch the Juno-I | Explorer 3 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: Mar 26, 1958 at 17:38 UTC
NET (No Earlier Than) confirmed by Army Ballistic Missile Agency
Mar 28, 2026 20:12 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 12 minutes ago
●Launch Library 212 minutes ago
Launch ID: b4e501ff-083c-47d6-9ff0-63ec1bf035c3
●Open-Meteo Weather1 week ago
Pad weather at 28.44, -80.57
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Mission Profile
Explorer 3 was a Juno-I Juno I mission operated by Army Ballistic Missile Agency that lifted off from Launch Complex 26A, Cape Canaveral SFS, FL, USA on March 26, 1958. The flight carried its payload on a earth science mission to Elliptical Orbit. The launch was a success.