ARYABHATA SATILITY

                                                                                             ARYABHATA SATILITY                                                                                                                                                                                                                                                           Aryabhata was India's first satellite, named after an Indian astronomer of the same name.

It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Kosmos-3M launch vehicle. It was built by the Indian Space Research Organisation (ISRO) to gain experience in building and operating a satellite in space.The launch came from an agreement between India and the Soviet Union directed by U.R. Rao and signed in 1972. It allowed the USSR to use India ports for tracking ships and launching vessels in return for launching India satellites.

On 19 April 1975 the satellite's 96.46-minute orbit had an apogee of 611 kilometres (380 mi) and a perigee of 568 kilometres (353 mi), at an inclination of 50.6 degrees. It was built to conduct experiments in X-ray astronomy, aeronomics, and solar physics. The spacecraft was a 26-sided polyhedron 1.4 metres (4.6 ft) in diameter. All faces (except the top and bottom) were covered with solar cells. A power failure halted experiments after four days and 60 orbits with all signals from the spacecraft lost after five days of operation. According the Soviet media reports, the satellite continued to function and transmit information for some time. The satellite reentered the Earth's atmosphere on 11 February 1992.
The satellite's image appeared on the reverse of Indian 2 rupee banknotes between 1976 and 1997 (Pick catalog and one rupee note number: P-79a-m).Aryabhata was named for the 5th century astronomer and mathematician from India by the same name.

Aryabhata, first unmanned Earth satellite built by India. It was named for a prominent Indian astronomer and mathematician of the 5th century ce. The satellite was assembled at Peenya, near Bangalore, but was launched from within the Soviet Union by a Russian-made rocket on April 19, 1975. Aryabhata weighed 794 pounds (360 kilograms) and was instrumented to explore conditions in the Earth’s ionosphere, measure neutrons and gamma rays from the Sun, and perform investigations in X-ray astronomy. The scientific instruments had to be switched off during the fifth day in orbit because of a failure in the satellite’s electrical power system. Useful information, nevertheless, was collected during the five days of operation.
Aryabhatta was the first satellite launched by India. It was named after the great Indian astronomer of the same name. Aryabhatta weighed 360kg and was launched by the Soviet Union on April 19, 1975 from Kapustin Yar using a Cosmos-3M launch vehicle. 
First Satellite Launched by India

                                                                                                                                           .The satellite had following objectives:.To indigenously design and fabricate a space-worthy satellite system and evaluate its perfromance in orbit..To evolve the methodology of conducting a series of complex operations on the satellite in its orbital phase..To set up ground-based receiving, transmitting and tracking systems..To establish infrastructure for the fabrication of spacecraft systems.
.Aryabhatta carried experiments related to X-Ray Astronomy, Solar Physics and Aeronomy. The satellite re-entered the Earth's atmosphere on 11 February 1992.