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Specification	Athena II Lockheed Martin × remove	Soyuz U Russian Federal Space Agency (ROSCOSMOS) × remove
Flights	3	714
Success rate	66.7%	97.2%
Thrust	1,900 kN	—
Height	28.2 m	51.1 m
Diameter	2.36 m	2.95 m
Launch mass	120 t	313 t
LEO capacity	2,065 kg	6,900 kg
GTO capacity	593 kg	—
Launch cost	—	—
Reusable	No	No
Stages	4	3

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