UNITED STATES AIR FORCE
Scout X-4 | ESRS
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Jun 25, 1964 at 01:40 UTC
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MISSION OVERVIEW
ESRS (Environmental Sciences Research Satellite, also (Research Satellite for Environmental Sciences) was a small magnetosperic research satellite built by the US Air Force Cambridge Research Lab.
LAUNCH DETAILS
VEHICLE
Scout X-4AGENCY
United States Air ForceMISSION
ESRS
MISSION TYPE
Earth Science
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: 70d3ee70-8924-4306-9cdb-032b05598ed8
Reported date: Jun 25, 1964 at 01:40 UTC
Last synced: 58 seconds 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-4 →
MANUFACTURER
Vought
VARIANT
4
FLIGHTS
12
SUCCESSES
11
SUCCESS RATE
91.7%
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-4 | ESRS launch?
The Scout X-4 | ESRS is scheduled for Thursday, June 25, 1964 at 1:40 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 ESRS?
The Scout X-4 | ESRS mission uses the Scout X-4 rocket, manufactured by Vought. The Scout X-4 has flown 12 times with a 91.7% success rate.
Where is the Scout X-4 | ESRS launching from?
The launch takes place from Space Launch Complex 5 at Vandenberg SFB, CA, USA.
What orbit is ESRS going to?
The ESRS mission is targeting Low Earth Orbit.
Who is launching ESRS?
The Scout X-4 | ESRS is operated by United States Air Force.
Can I watch the Scout X-4 | ESRS 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 20:13 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 20:13 UTC
Launch date set: Jun 25, 1964 at 01:40 UTC
NET (No Earlier Than) confirmed by United States Air Force
Mar 28, 2026 20:13 UTC
Launch failure reported
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 58 seconds ago
●Launch Library 258 seconds ago
Launch ID: 70d3ee70-8924-4306-9cdb-032b05598ed8
●Open-Meteo Weather1 day ago
Pad weather at 34.61, -120.62
Mission Profile
ESRS was a Scout X-4 mission operated by United States Air Force that lifted off from Space Launch Complex 5, Vandenberg SFB, CA, USA on June 25, 1964. The flight carried its payload on a earth science mission to Low Earth Orbit. The launch ended in failure.