At 9:29am today, ISRO successfully launched the PSLV from Sriharikota, its first mission after the failure of IRNSS-1H in August.
The launch vehicle is carrying 31 satellites: 28 from six other countries and three from India, including the country's 100th.
In a unique feature, they will be launched in two orbits- 30 of them in a 550km-above-earth orbit, and one in 359km-above. Details here.
ISRO launches 31 satellites on January 12
What is this launch going to carry?
The launch is going to carry Cartosat and other satellites, including 28 from the US and five other countries, and will take place on January 12 at 9:30 am.
All the 31 satellites would be launched into Earth's lower orbit and will be the third installation of the Cartosat-2 series.
Reportedly, the launch was earlier scheduled for January 10, but got postponed.
What is Cartosat?
Cartosat-2 is a remote sensing satellite with the resolution of 0.6 metres which can spot even smaller objects within a square of 0.6 m by 0.6 m.
The ISRO official, succinctly, made it public, that these satellites are capable of high-resolution scene specific spot imagery.
They weigh around 712 kgs and were also used in Indian army's surgical strikes against Pakistan in 2016.
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History of launching Cartosat
The upcoming launch of the Cartosat satellite will be the third installation of the Cartosat-2 series.
Earlier in February, last year, PSLV-C37 launched the first Cartosat-2 series satellite along with a record 104 satellites at a time.
Again in June, another Cartosat-2 series satellite was launched along with 30 other satellites in a single flight.
ISRO's recent failure at a PSLV launch
This launch will resume after a hiatus of almost 4 months.
Earlier, last year on August 31, ISRO failed to launch one of its PSLV rockets when it did not come out of the heat shield as it should have.
The launch failed to take a satellite named IRNSS-1H into space, which was a replacement for India's first navigation satellite, IRNSS-1A.