The YOUTHSAT is a joint Indo-Russian stellar and atmospheric satellite mission with the participation of students from Universities at graduate, post graduate and research scholar level.

The ISRO was launched its Youthsat satellite on April 20, 2011.

Youthsat is a mini satellite and the second in the Indian Mini Satellite (IMS) series with a lift-off mass of 92 kg,.

The satellite carries three payloads, of which two are Indian and one Russian.

The Indian payloads are:

RaBIT (Radio Beacon for Ionospheric Tomography)- For mapping Total Electron Content (TEC) of the Ionosphere.
LiVHySI (Limb Viewing Hyper Spectral Imager) - To perform airglow measurements of the Earth's upper atmosphere (80- 600 km) in 450-950 nm.

ISRO Youthsat satellite basic detail:

Lift-off Mass 92 kg
Orbit Period 101.35 min
Dimension 1020 (Pitch) x 604 (Roll) x 1340 (Yaw) mm3
Attitude and Orbit Control 3-axis body stabilised using Sun and Star Sensors, Miniature Magnetometer, Miniature Gyros, Micro Reaction Wheels and Magnetic Torquers
Power Solar Array generating 230 W, one 10.5 AH Li-ion battery
Mechanisms Paraffin Actuator based Solar Panel Hold Down and Release Mechanism
Launch date April 20, 2011
Launch site SHAR Centre Sriharikota India
Launch vehicle PSLV- C16
Orbit Circular Polar Sun Synchronous
Orbit altitude at injection 822 km + 20 km (3 Sigma)
Orbit Inclination 98.731 º + 0.2 º
Mission life 2 years