Name: TD-1A — launch
Start: 1972-03-12
Location: Vandenberg AFB, California

Launch code: OS. Source references: TR-1022; -.

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)

1971-09-29 OSO 7 — launch Shares a spacecraft, person or other linked entity
1969-06-29 Biosatellite 3 — launch Shares a spacecraft, person or other linked entity
1969-08-09 OSO 6 — launch Shares a spacecraft, person or other linked entity
1972-01-31 HEOS 2 — launch Same organization: NASA Goddard Space Flight Center
1972-07-23 ERTS 1 — launch Same organization: NASA Goddard Space Flight Center
1972-09-23 Explorer 47 — launch Same organization: NASA Goddard Space Flight Center