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The Indian rocket numbered PSLV-C51 carrying the 637-kg Brazilian satellite Amazonia-1 and 18 other satellites (including 13 from USA) is scheduled to lift-off from the first launch pad at Satish Dhawan Space Centre (SDSC)
 

About:
• It is India’s first space mission for 2021 and is one of the longest for a PSLV rocket.
• The rocketing is a fully commercial one of NewSpace India Ltd (NSIL) with the primary passenger being the Amazonia-1 satellite.
• Amazonia-1 is the optical earth observation satellite of National Institute for Space Research (INPE).
o This satellite would further strengthen the existing structure by providing remote sensing data to users for monitoring deforestation in the Amazon region and analysis of diversified agriculture across the Brazilian territory
• The 18 co-passenger satellites include four from IN-SPACe (three UNITYsats from the consortium of three Indian academic institutes (Jeppiaar Institute of Technology, Sriperumbudur, G.H.Raisoni College of Engineering, Nagpur and Sri Shakthi Institute of Engineering and Technology, Coimbatore) Aand One Satish Dhawan Sat from Space Kidz India) and 14 from NSIL.
• The other 14 satellites ferried on commercial basis are SindhuNetra, an Indian technology demonstration satellite and 13 satellites from the USA viz., SAI-1 NanoConnect-2, a technology demonstration satellite and 12 SpaceBees satellites for two way satellite communications and data relay.
• Third-time ISRO will be using the PSLV rocket’s DL variant that will have two strap-on booster motors.

• The PSLV is a four-stage/engine rocket powered by solid and liquid fuels alternatively with six booster motors strapped onto the first stage to give higher thrust during the initial flight moments.
• The PSLV-C51 mission is one of the longest ones.

Source: The Financial Express