PSLV-C45 successfully launches EMISAT and 28 customer satellites
Release/PSLV-C45 successfully launches EMISAT and 28 customer satellites
India’s Polar Satellite Launch Vehicle (PSLV-C45) today successfully
launched EMISAT and 28 international customer satellites from Satish
Dhawan Space Centre (SDSC) SHAR in Sriharikota. This flight marked the
first mission of PSLV-QL, a new variant of PSLV with four strap-on
PSLV-C45 lifted off at 9:27 Hrs (IST) from the Second Launch Pad and
injected India’s EMISAT into a 748 km sun-synchronous polar orbit, 17
minutes and 12 seconds after lift-off. After separation, the two solar
arrays of EMISAT were deployed automatically and the ISRO Telemetry
Tracking and Command Network at Bengaluru assumed control of the
satellite. In the coming days, the satellite will be brought to its
final operational configuration.
Following the separation of EMISAT, the vehicle’s fourth stage engines
were restarted twice to place the 28 international customer satellites
precisely into a sun-synchronous orbit of 504 km height. The last
customer satellite was placed into its designated orbit 1 hour and 55
minutes after lift-off.
About 3 hours after lift-off, the fourth stage (PS4) of the vehicle was
moved to a lower circular orbit of 485 km after two restarts to
establish it as an orbital platform for carrying out experiments with
its three payloads.
EMISAT is a satellite built around ISRO’s Mini Satellite-2 bus weighing
about 436 kg. The satellite is intended for electromagnetic spectrum
The 28 international customer satellites, together weighing about 220 kg,
are from four countries, namely, Lithuania (2), Spain (1), Switzerland
(1) and USA (24). These foreign satellites were launched as part of
The payloads carried by PS4 are Automatic Identification System from
ISRO, Automatic Packet Repeating System from AMSAT, India and Advanced
Retarding Potential Analyzer for ionospheric studies from Indian
Institute of Space Science and Technology.
ISRO Chairman Dr K Sivan congratulated the launch vehicle and satellite
teams involved in the mission.
“Today’s PSLV mission was unique in several ways. It was a four
strap-on new variant, the vehicle achieved three different orbits and
for the first the PS4 stage is powered by solar panels,” Dr Sivan said.
He added that a new PSLV team executed today’s mission.
Dr Sivan also placed on record the significant involvement of the
industry in this mission.
So far, PSLV has launched 46 national satellites, 10 satellites built by
students from Indian Universities and 297 international customer
satellites, including the satellites launched today.
In its next mission, PSLV-C46 will launch RISAT-2B in May 2019.