Dale Ireland wrote: >I am pretty sure the shuttle launch is 20:15 UT (4:15pm EDT) and the >shuttle should pass over London about 20:30 UT, an hour after sunset and >5 minutes behind the ISS. OK for the Shuttle launch at 20:15 UT. Aren't 15 minutes a little short for the trajectory Florida-London ? Sunset in London on 24 April is at 19:12 UT (end of civil twilight is at 19:49). With TLEs of day 104 ISS passes over London on 24 April between 20:01 and 20:07 UT (times are for 10 degrees elevation). It so happens that ISS enters the Earth's shadow at 20:07 UT. I guess that the Shuttle in an orbit of the same inclination and *roughly* the same altitude will enter shadow at approximately the same time. In fact, the Shuttle will be at a lower altitude and should enter shadow somewhat earlier. In conclusion, if Atlantis flies over western Europe around 20:30 as Dale suggests, it will be too late to be seen. Any comments ? Bruno Tilgner Saint-Cloud, France ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri Apr 14 2000 - 15:20:21 PDT