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 Message 889 
 Wilfred van Velzen to August Abolins 
 Re: The James Webb Space Telescope 
 27 Dec 21 21:59:03 
 
TID: FMail-lnx64 2.1.0.18-B20170815
RFC-X-No-Archive: Yes
TZUTC: 0100
CHRS: UTF-8 2
PID: GED+LNX 1.1.5-b20161221
MSGID: 2:280/464 61ca2997
REPLY: 2:460/256 00000347
Hi August,

On 2021-12-27 20:55:34, you wrote to me:

 AA> How can it be 25% of it's distance at day 3, when it only enters L2 in
 AA> it's 29th day?

I explained that in a previous message: It's slowing down...

 WV> It will take about 29 days to get there. It will take so long to get
 WV> there, because there is no propulsion anymore (except for some short
 WV> burns for course corrections). It's in the balistic fase on it's path
 WV> to it's destination, and because of the gravitational pull of the
 WV> earth it's constantly slowing down slightly. Its speed now is about
 WV> 1.7 km/s relative to earth, while during the launch fase it topped at
 WV> about 10 km/s...

Bye, Wilfred.
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