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China announces timing of another two brakes for Chang'e-1
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China's first lunar probe, Chang'e-1, will perform its second braking at about 11:00 AM on Nov. 6, according to a spokesman with the China National Space Administration (CNSA) on Monday afternoon.

The second braking will slow down the probe's speed to 1.8 km per second to help it enter a 3.5-hour orbit with a perilune of 200 km and an apolune of 1,700 km, Pei Zhaoyu, the spokesman, told a press conference here.

The probe is expected to brake for the third time at around 8:00 AM on Nov. 7, which will further slow down its speed to 1.59 km per second to make it enter a 127-minute round polar circular orbit, which is also its final destination where Chang'e is supposed to start "working" formally, Pei said.

Chang'e-1 will then stay a year in the round orbit, which is 200 km from the moon's surface, for scientific explorations.

Chang'e-1 completed its first braking, which slowed down its speed to 1.948 km per second, and entered the moon's orbit at around 11:37 AM on Monday.

The probe is now traveling along a 12-hour elliptical moon orbit, with a perilune of about 210 km and an apolune of about 8,600 km.

(Xinhua News Agency November 5, 2007)

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