Thanks Ted.... In fact about two hours ago , the info came to hand and Calsky was updated , the result was a shift in ground track by about 1.7 km or so. That boost put the shuttle on a direct transit , acros the sun , from my home location. Unfortunately , despite the fact that camera was running etc , the weather got the better of me , and I saw absolutely ................nothing :O( Doooohhhh John ----- Original Message ----- From: "Ted Molczan" <seesat@rogers.com> To: <SeeSat-L@satobs.org> Sent: Wednesday, July 27, 2005 12:53 PM Subject: RE: NC-2 second ISS-rendezvous rocket firing > John asked: > >> Can anyone tell me how noticeable this burn will be as far as >> ground track is concerned ?......and if the TLEs incorporating the burn >> are yet available ? > > Elsets covering all orbital phases of the mission are available via this > web > page (hit the red icon): > > http://spaceflight1.nasa.gov/realdata/elements/index.html > > At the moment, that page appears to be the same one posted pre-launch, but > based > on past behaviour, it is likely to be updated at least several times > during the > mission, so when you need precise predictions, check for updates as late > as > possible before you observe. > > The table at the top of the page lists all remaining planned manoeuvres. > See the > column IMPULSIVE TIG, for their date and time. The rightmost column lists > the > apogee and perigee height (HA, HP) in nautical miles, by which you can > easily > tell whether the effect of the manoeuvre will be large or small (at least > for > those that are mostly in-plane). > > State vectors in Cartesian and TLE form are presented for each manoeuvre > on the > remainder of the page. They are presented for "Coasting arcs" which cover > the > period between successive orbital manoeuvres. For example, on the > pre-launch > page, the first manoeuvre time in the table was on day 207/15:17:08.227 > GMT (aka > UTC). Scanning through the page, I find a match in > "Coasting Arc #2 ...", which states a Vector Time (GMT): > 2005/207/15:17:41.987 > shortly after the manoeuvre. > > It would be nice if the table of manoeuvres included a reference or a link > to > the corresponding coasting arc #. Perhaps I will send in a suggestion. > > Perhaps someone could write a script to link to the page and extract a > subset of > the data, containing, say, only the starting and ending time of each > coasting > arc, and the corresponding TLE, something like what I did manually > pre-launch: > > http://satobs.org/seesat/Jul-2005/0224.html > > Ted Molczan > > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html > > > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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