The ISRO Satellite Centre (ISAC) (Hindi: इसरो उपग्रह केंद्र) is the lead centre of ISRO for design, development, fabrication and testing of all Indian made satellites. It was established in the year 1972 as Indian Scientific Satellite Project (ISSP) in Peenya Industrial Estates of Bengaluru. ISAC celebrated its 40 years of fruitful service (Ruby Year Celebration) on May 11, 2012. Situated in Vimanapura Post of Bangalore, Karnataka, the centre has produced more than 50 satellites including the INSAT series, the IRS series, as well as the GSAT communication satellites. Laboratory of Electro-optic Systems(LEOS) and ISRO Satellite Integration and Testing Establishment(ISITE) works under the umbrella of ISAC. S.K.Shivkumar was appointed in 2012 as the director of ISRO Satellite Centre(ISAC). Like other ISRO centres, ISAC is also organised under Matrix Management Structure. The centre is divided into many Functional Areas like(Control and Mission Area, Electronic Systems Area, Mechanical Systems Area, Reliability and Components Area etc.). Each Area is further divided into Groups. For instance, Control and Mission area has many groups like Control Systems Group, Flight Dynamics Group etc. Again Groups get divided into Divisions. For example, Control Systems Group has many divisions like Control Electronics Division, Control Dynamics and Analysis Division etc. Apart from this Project Planning and Evaluation Group, Computer and Information Group, Space Astronomy and Instrumentation Division are independent. Apart from this Facilities (like Thermovac facility etc.) and Projects (like IRS, INSAT,SATNAV, etc.) also exist.