PSLV-C21 will be launched from the First Launch Pad of Satish Dhawan Space Centre (SDSC SHAR), Sriharikota.

India's Polar Satellite Launch Vehicle, in its twenty-second flight (PSLV-C21) will launch the French earth observation satellite SPOT 6 along with a micro-satellite from Japan in to a 655 km polar orbit inclined at an angle of 98.23 deg to the equator. PSLV-C21 will be launched from the First Launch Pad of Satish Dhawan Space Centre (SDSC SHAR), Sriharikota.

With a lift-off mass of 712 kg, SPOT 6 is the heaviest satellite to be launched by PSLV for an international customer. The Japanese micro-satellite PROITERES, carried as an auxiliary payload, has a lift-off mass of 15 kg. PSLV-C21 is the eighth flight of PSLV in 'core-alone' configuration (without solid strap-on motors).

PSLV- C21 Stages at a Glance
	STAGE-1	STAGE-2	STAGE-3	STAGE-4
Nomenclature	PS1	PS2	PS3	PS4
Propellant	Solid (HTPB Based)	Liquid (UH25 + N2O4)	Solid (HTPB Based)	Liquid (MMH + MON-3)
Mass (Tonne)	138.0	41.0	7.6	2.5
Max Thrust (kN)	4787	804	242	7.3 X 2
Burn Time (sec)	102	148	110	526
Stage Dia (m)	2.8	2.8	2.0	2.8
Stage Length  (m)	20	12.8	3.6	2.6
Control	SITVC for Pitch & Yaw, Reaction Control Thrusters for Roll Control	Engine Gimbal for Pitch & Yaw, Hot Gas Reaction Control Motor for Roll Control	Flex Nozzle for Pitch & Yaw, PS4 Reaction Control System (RCS) for Roll Control	Engine Gimbal for Pitch, Yaw & Roll, on-off RCS for Coast Phase Control

• HTPB : Hydroxyl Terminated Poly Butadine
• UH 25 : Unsymmetrical di-methyl hydrazine + 25% Hydrazine Hydrate
• MMH : Mono Methyl Hydrazine
• MON-3 : Mixed Oxides of Nitrogen
• SITVC : Secondary Injection Thrust Vector Control