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isroThe Countdown for the launch of as many as 20 satellites including, India’s earth observation Cartosat-2 Series Satellite, is in smooth progress, ISRO said on Tuesday.

The countdown exercise encompasses spacecraft health checks and preparations for propellant filling operation of second stage (PS2) of PSLV-C34 is in progress.

“Spacecraft health checks and preparations for propellant filling operation of second stage (PS2) of PSLV-C34 are under progress. Countdown is progressing normally,” ISRO said.

The 48-hour countdown began yesterday at 9.26 am for the launch of 20 satellites onboard PSLV C-34 from Sriharikota on Wednesday.

The countdown began after the launch authorisation board (LAB) gave its nod and filling of Mixed Oxides of Nitrogen (MON-3) of PS4 was completed yesterday.

Cartosat-2 Series is similar to the earlier Cartosat-2, 2A and 2B, and 19 co-passenger satellites together weighing about 560 kg at lift-off would be injected into a 505-km polar Sun Synchronous Orbit.

According to ISRO, the total weight of all the 20 satellites is about 1,288 kg.

The co-passengers include satellites from the US, Canada, Germany and Indonesia as well as two satellites from Indian Universities.

The mission would carry LAPAN A3 of Indonesia, BIROS of Germany, SKYSAT GEN 2-1 of US, MVV of Germany among the micro satellites, ISRO sources had earlier said.