Proton

Country of Origin: Soviet Union / Russia
Manufacturer: Khrunichev

Height: 54-58 m
Diameter: 7.4 m
Payload to LEO: 19.76 tons (Proton-K); 23 tons (Proton-M)
Total Mass: 705 tons

Launch Sites: Baikonur
First Flight: March 10, 1967 (K); April 7, 2001 (M)
Last Flight: March 30, 2012 (K); Active (M)
Total Launches: 311 (K); 115 (M)
Successful Launches: 275 (K); 104 (M)

Proton-K

Stage	Diameter	Fuel	Engine	Time	Thrust (Vac.)	ISP (SL / Vac.)	Mass / Empty Mass
1	7.4 m	UDMH / N2O4	6 x RD-253	124 s	6 x 1630 kN	285 s / 316 s	450.51 / 31.1 tons
2	4.15 m	UDMH / N2O4	4 x RD-0210	206 s	4 x 582 kN	? / 326.5 s	167.83 / 11.715 tons
3 (RD-0212)	4.15 m	UDMH / N2O4	RD-0213 + 4 x RD-0214 verniers	238 s	582 kN + 30.9 kN	? / 326.5 s	50.75 / 4.185 tons

Proton-M

Stage	Diameter	Fuel	Engine	Time	Thrust (Vac.)	ISP (SL / Vac.)	Mass / Empty Mass
1	7.4 m	UDMH / N2O4	6 x RD-275M	108 s	6 x 1832 kN	288 s / 316 s	458.9 / 30.6 tons
2	4.15 m	UDMH / N2O4	4 x RD-0210	206 s	4 x 582 kN	? / 326.5 s	167.83 / 11.715 tons
3 (RD-0212)	4.15 m	UDMH / N2O4	RD-0213 + 4 x RD-0214 verniers	238 s	582 kN + 30.9 kN	? / 326.5 s	50.75 / 4.185 tons
4 (Briz-M) (opt.)	4.0 m	UDMH / N2O4	S5.98M	3000 s	19.62 kN	? / 326 s	22.17 / 2.37 tons
4 (Blok DM-2)		RP-1 / LOX	RD-58M		85 kN	? / 352 s