Launch Date
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. With a lift-off mass of 92 kg, Youthsat is a mini satellite and the second in the Indian Mini Satellite (IMS) series. Youthsat mission intends to investigate the relationship between solar variability and thermosphere-Ionosphere changes. The satellite carries three payloads, of which two are Indian and one Russian. Together, they form a unique and comprehensive package of experiments for the investigation of the composition, energetics and dynamics of earth's upper atmosphere.
The Indian payloads are:
  1. RaBIT (Radio Beacon for Ionospheric Tomography)- For mapping Total Electron Content (TEC) of the Ionosphere.

  2. LiVHySI (Limb Viewing Hyper Spectral Imager) - To perform airglow measurements of the Earth's upper atmosphere (80- 600 km) in 450-950 nm.

  3. The Russian payload

    SOLRAD - To study temporal and spectral parameters of solar flare X and gamma ray fluxes as well as charge particles in the earth polar cap regions.

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
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