Program

OSO

Payloads: 8
In orbit: 0
Operational (CelesTrak): 0
Re-entered: 8
First launch: 1962-03-07
Latest launch: 1975-06-21

Owners

NASA Goddard Space Flight Center8

Built by

Payloads in this program

Name	NORAD	Launch date	Status
OSO 1	255	1962-03-07	Re-entered 1981-10-08
OSO 2	987	1965-02-03	Re-entered 1989-08-09
OSO 3	2703	1967-03-08	Re-entered 1982-04-04
OSO 4	3000	1967-10-18	Re-entered 1982-06-15
OSO 5	3663	1969-01-22	Re-entered 1984-04-02
OSO 6	4065	1969-08-09	Re-entered 1981-03-07
OSO 7	5491	1971-09-29	Re-entered 1974-07-09
OSO 8	7970	1975-06-21	Re-entered 1986-07-09

From GCAT by Jonathan McDowell (CC BY 4.0). Roles are counted from the catalogue itself, not from GCAT type labels, which GCAT describes as patchy. About this source