Program

SAS

Payloads: 3
In orbit: 0
Operational (CelesTrak): 0
Re-entered: 3
First launch: 1970-12-12
Latest launch: 1975-05-07

Owners

NASA Goddard Space Flight Center3

Built by

JHU-Applied Physics Lab3

Payloads in this program

Name	NORAD	Launch date	Status
EXPLORER 42 (SAS-1)	4797	1970-12-12	Re-entered 1979-04-05
EXPLORER 48 (SAS 2)	6282	1972-11-15	Re-entered 1979-04-16
EXPLORER 53	7788	1975-05-07	Re-entered 1979-04-09

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