Thursday, October 23, 2008

Chandrayaan-1's orbit raised- Status Normal

The first orbit-raising manoeuvre of Chandrayaan-1 lunar spacecraft was performed on Thursday and the health of the satellite is normal, the Indian Space Research Organisation said.
The orbit-raising operation was performed at 0900 hours when the satellite's 440 Newton Liquid Engine was fired for about 18 minutes by commanding the spacecraft from Spacecraft Control Centre (SCC) at ISRO Telemetry, Tracking and Command Network (ISTRAC) here.
"With this engine firing, Chandrayaan-1's apogee (farthest point to earth) has been raised to 37,900 km, while its perigee (closest point to earth) has been raised a little, to 305 km," the space agency said in a statement.
"In this orbit, Chandrayaan-1 spacecraft takes about 11 hours to go round the earth once."
Chandrayaan-1, India's first moon mission, was successfully launched by PSLV-C11 yesterday from Satish Dhawan Space Centre in Sriharikota.
The launch vehicle placed Chandrayaan-1 in an elliptical orbit with a perigee of 255 km and apogee of 22,860 km. In this initial orbit, Chandrayaan-1 orbited the earth once in about six and a half hours.
Following its successful launch, the SCC acquired the first signals and conducted preliminary operations on Chandrayaan-1. The Deep Space Network at Byalalu, near here, tracked the spacecraft in this orbit and received signals in S and X band and has sent commands to the spacecraft.
"All systems onboard the spacecraft are functioning normally. Further orbit raising manoeuvres are planned in the coming days," the ISRO said.