?? Maybe you meant chandrayaan-2 orbiter?
Upcoming missions:
December 7th: PSLV C-36/RESOURCESAT-2A
Later in december: Pad abort test of crew module for human space flight program
January: GSLV MK-3 D-1/GSAT-19E
Late January/Early feb: PSLV C-37/CARTOSAT-2D + 82 other satellites
Next...
LEO is anywhere between 200km to 2000km. If you want to send humans you would launch to 200-400km LEO, if you want to send earth observation satellite you would launch to 500km+ LEO for maximum imaging range.
GTO from my understanding is 180 by 36000 km orbit which is used as a initial stage...
Your YF-73 engine that flew in 84 was a gas generator design. Such design is childs play compared to stage combustion cycle that ISRO's CE-7.5 uses.
YF-73 specific impulse: 420 seconds
CE-7.5 specific impulse: 452 seconds
Look at wikipedia or ISRO's site
It is 8 tons to 620km high circular LEO while long march five is 25 tons to 200 km by 400 km eplitical LEO. They are not the same it takes more delta v to place at 620km than it does at 200-400 km. If long march 5 launched into 620km high orbit its capablity would be somewhere between 10 - 15...
SCE-200 specs:
Sea level thrust: 182 tons
Sea level impulse: 299 seconds
Dry mass: 2700 kg
Fuel: LOX/RP-1
Engine cycle: Oxidiser rich staged combustion cycle
Some info on semi-cryo stages in development:
SC-200 - One SCE-200 engine with 200 ton propellant loading. It will serve as replacement...