Length: 2.61 m
Diameter: 4.0 m
Engine(s): One 14D30 Sustainer, Four 11D458M Control Thrusters
Thrust: 19.62 kN
Inert Mass: 2,370 kg
Propellant: 19,800 kg
Mass: Comprised of a central core and an additional
jettisonable propellant tank and powered by one
pump-fed gimballed main engine.Features increased
lift capability of 6,150 kg (13,558 lb) PSM to
geosynchronous transfer orbit with a 1,500 m/sec
residual velocity to GSO. Strengthened structure
allows launching heavier spacecraft with higher
center of gravity locations, and even allows for
launching multiple spacecraft.