United States Air ForceThor Delta E1Space Launch Complex 2E, Vandenberg SFB, CA, USA
Thor Delta E1 | Isis 2
Launch window
No countdown — this launch time is not yet known to the minute.April 1, 1971Add to calendar
Launch Successful
Image: NASA
United States Air Force's 545th launch · 9th this year · humanity's 1,199th orbital launch attempt
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Window: Apr 1, 02:57 – Apr 1, 02:57 UTC
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Isis 2
ISIS 2 was an ionospheric observatory instrumented with a sweep- and a fixed-frequency ionosonde, a VLF receiver, energetic and soft particle detectors, an ion mass spectrometer, an electrostatic probe, a retarding potential analyzer, a beacon transmitter, a cosmic noise experiment, and two photometers.
Earth Science · Low Earth Orbit (LEO)
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