Name: Vela 4A/4B — launch
Start: 1967-04-28
Location: Cape Canaveral Air Station, Florida

Launch code: OS. Source references: Titan3Review; MM/Titan.

Jonathan McDowell — General Catalog of Artificial Space Objects (opens in a new tab) — Data from GCAT (J. McDowell, planet4589.org/space/gcat), CC BY 4.0. Adapted into anniversary records. (CC BY 4.0)

1967-01-18 IDCSP — launch Shares a spacecraft, person or other linked entity
1967-07-01 IDCSP — launch Shares a spacecraft, person or other linked entity
1966-06-16 IDCSP — launch Shares a spacecraft, person or other linked entity
1967-01-14 CORONA 114/1038 — launch Same organization: US Air Force Space Systems Division
1967-02-02 AFP-206 — launch Same organization: US Air Force Space Systems Division
1967-02-22 CORONA 115/1039 — launch Same organization: US Air Force Space Systems Division