The Indian Space Research Organisation (ISRO) is going to launch Polar Satellite Launch Vehicle (PSLV) C-23 from Satish Dhawan Space Centre (SDSC)-SHAR, Sriharikota (located at 100 km north from Chennai). PSLV - C23 will launch the French Earth Observation Satellite SPOT-7 along with four other co-passenger satellites from Canada, Germany and Singapore on Jun 30, 2014 at 9.52 a.m.[IST].The four co-passenger satellites are NLS-7.1 (Can-X4) and NLS-7.2 (Can-X5) from UTIAS/SLF Canada, AISat from DLR Germany and VELOX-1 from NTU Singapore.
Yesterday, Launch Authorisation Board (LAB) gave its nod for the launch of PSLV - C23 on Jun 30 from Sriharikota. It was originally planned to launch PSLV - C23 at 9.49 a.m.[IST] but now it is rescheduled to 9.52 a.m.[IST].There is a 3 minute delay in the launch because there is a possibility that the space debris may get in the way of launch vehicle.
ISRO said that the 49 hour countdown has begun at 8.52 a.m.[IST] today (Jun 28, 2014) at Satish Dhawan Space Center (SDSC), Shriharikota. PSLV-C23's Mono-Methyl Hydrazine (MMH) Propellant filling operations of Fourth Stage (PS4) was started at 11.15 a.m.[IST] and was successfully completed. Recently,Propellant filling of Reaction Control Thrusters (RCT) of First Stage (PS1) is also completed successfully.
SPOT-7: SPOT 7 (714 Kg satellite mass) is a French optical Earth Observation Satellite identical to SPOT-6 which was launched in September 2012 on PSLV-C21. SPOT-7 will be placed diametrically opposite to SPOT-6 after it is injected into Sun Synchronous Orbit.SPOT-7 is built by AIRBUS DEFENCE & SPACE, a European space technology company.
NLS-7.1 and NLS-7.2
NLS-7.1 (Can-X4) and NLS-7.2 (Can-X5): NLS-7.1 and NLS-7.2 (each weighing 15 kg satellite mass) are two-spacecraft dedicated to the mission of Precision Formation Flying using differential GPS with CM level relative position.
AISat: AISat (14 Kg satellite mass) is a global sea-traffic monitoring system with emphasis on high traffic zones using AIS signals.It is the first satellite by DLR in the nano-satellite class.
VELOX-1: VELOX-1 (7 Kg satellite mass) is a MEMS-based attitude determination and control system.It is a technology demonstrator for in-house design of image sensor which uses inter-satellite RF link.
ISRO’s Polar Satellite Launch Vehicle has launched 35 satellites of countries like Germany, Canada, France, Japan, Switzerland,Singapore, UK,Denmark and many more.
Source : ISRO | Image Credits : Spaceflight101