2018
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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43
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22
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19
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56
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Detailed explanation-1: -A total of 7 satellites form the Indian Regional Navigation Satellite System [IRNSS] – all launched by PSLV, with IRNSS-1G completing the constellation in 2016.
Detailed explanation-2: -Currently, *thirteen* operational satellites are in Sun-synchronous orbit – RESOURCESAT-1, 2, 2A CARTOSAT-1, 2, 2A, 2B, RISAT-1 and 2, OCEANSAT-2, Megha-Tropiques, SARAL and SCATSAT-1, and *four* in Geostationary orbit-INSAT-3D, Kalpana & INSAT 3A, INSAT-3DR.
Detailed explanation-3: -2022 has witnessed the maximum number of orbital and sub-orbital launches. 149 out of 155 launches were successful in 2022. According to United Nations Office for Outer Space Affairs (UNOOSA), 8261 individual satellites are orbiting the Earth now, out of which 4, 852 satellites are active.