Vela 3A/3B
Success
JUL 20196508:27:00 UTCOne vernier engine failed to start, slightly low orbit did not preclude successful completion of the mission.
LIFTOFF
JUL 20 196508:27:00 UTC
Success
launched from LC-13 Canaveral
aboard Atlas Agena D LV-3 225D into HEO
Payload
Vela 3A/3B
Nuclear strike detection