Delta 2913 | COS-B

Delta 2913 | COS-B lifted off aboard a Delta 2913 from Vandenberg SFB, CA, USA, carrying its payload to Elliptical.

Launch time
Status
SUCCESS
Operator
United States Air Force
Mission type
Astrophysics
Rocket
Delta 2913
Launch site
Vandenberg SFB, CA, USA
Launch pad
Space Launch Complex 2W
Payload
—
Target orbit
Elliptical
Delta 2913 | COS-B cover image

Mission timeline

  1. 1975-08-09T01:50:00.000Z
    Liftoff
    Delta 2913 roars off the pad at Vandenberg SFB, CA, USA.
  2. Max-Q
    The vehicle reaches Max Q, the highest aerodynamic load of the flight.
  3. Main engine cutoff (MECO)
    MECO — first-stage propulsion ends after a nominal burn.
  4. Stage separation
    Clean stage separation confirmed.
  5. Second-stage ignition
    The upper-stage engine lights up after separation.
  6. Orbit insertion
    Orbit insertion confirmed — now circling in Elliptical.
  7. Mission success
    All mission objectives achieved.

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