Atlas G Centaur
USA Wikipedia 
Built & Operated By
Convair
Commercial · founded 1943
Family
Atlas
variant G Centaur
Maiden Flight
9 JUN 1984
About
The Atlas G, also known as Atlas G Centaur-D1AR was an American expendable launch system derived from the Atlas-Centaur. It was a member of the Atlas family of rockets, and was used to launch seven communication satellites during the mid to late 1980s. Atlas G consisted of an improved Atlas core with modernized avionics and stretched propellant tanks. The Centaur stage also had several updated components and other technical improvements. It was replaced by the Atlas I, which had an improved guidance system.
Vehicle Specifications
Height
38 m
Diameter
3.05 m
Launch Mass
166 T
Thrust
1,896 kN
Stages
2
Configuration
Expendable
Launch Record
Total Launches
7
Successful
6
Failed
1
Consecutive
1
Performance
To LEO
3,630 kg