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ISRO's dual-orbit satellite launch: 10 things you need to know

In its first multi-orbital launch, India's workhorse PSLV injected eight different satellites, including the country's weather satellite SCATSAT-1 and five from other nations, into two different orbits.

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Indian Space Research Organisation (ISRO) launched a PSLV rocket from Sriharikota today at 9:12AM from Sriharikota. The 377 kg SCATSAT-1 satellite has satellites from Algeria, Canada and USA, as well as two satellites from Indian Universities as its co-passenger. This is also the first mission of the PSLV to launch its payloads into two different orbits.

Let’s take a quick look at 10 things you need to know about the mission:

1. India’s Polar Satellite Launch Vehicle, in its thirty-seventh flight (PSLV-C35), launched the 371 kg SCATSAT-1 for ocean and weather related studies and seven co-passenger satellites into polar Sun Synchronous Orbit (SSO).

2. Besides SCATSAT-1, the others included are PRATHAM and PISAT, two academic satellites from India, ALSAT-1B, ALSAT-2B and ALSAT-1N (all from Algeria) and Pathfinder-1 and NLS-19, from USA and Canada.

3. ISRO said that SCATSAT-1 is a continuity mission for scatterometer payload carried by the earlier Oceansat-2 satellite.

4. SCATSAT-1 will be placed into a 730 km Polar SSO whereas; the two Universities/ Academic Institute Satellites and the five foreign satellites will be placed into a 689 km polar orbit.

5. SCATSAT-1 will help provide weather forecasting services to the user communities through the generation of wind vector products for weather forecasting, cyclone detection and tracking.

6. The total weight of all the eight satellites onboard PSLV C35 is about 675 kg.

7. PSLV-C35 is expected to coast a little farther before its fourth-stage engine is ignited and shut down, for about 20 seconds, after an hour post the first satellite injection, state ISRO scientists.

8. This will also be the 15th flight of PSLV in 'XL' configuration with the use of solid strap-on motors.

9. This is also will be the second time that ISRO puts many satellites into different orbits during a single launch mission.

10. The mission slated to carry out for two hours and fifteen minutes or more is the longest PSLV satellite launch mission of ISRO so far.

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