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Specification	Thor DM-21 Ablestar United States Air Force × remove	Proton K/DM-2 Khrunichev State Research and Production Space Center × remove
Flights	19	110
Success rate	68.4%	93.6%
Thrust	760 kN	—
Height	29 m	—
Diameter	1.44 m	—
Launch mass	51 t	—
LEO capacity	150 kg	—
GTO capacity	—	—
Launch cost	—	—
Reusable	No	No
Stages	2	—

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