I wonder how long after the launch the spaceship could be seen with naked eye or from a telescope during the daylight? Thank you very much for the update elements! ======= 2005-10-11 19:00:40 You wrote in your letter: ======= >It appears that the launch window will start on Wednesday Oct 12 UTC, one day >sooner than originally reported, perhaps in an effort to outrun forecast bad >weather later in the week.. > >The most frequently rumoured launch time now is 01:00 UTC, but I have not given >up on 03:00 UTC, so I have generated search elements for both times. Section 1 >has the 01:00 UTC launch elements; Section 2 has the 03:00 UTC elements.. > >Either launch time will result in visibility over much of the world between >about 50 N and 50 S latitude. Roughly speaking, the northern hemisphere will >have morning visibility; the southern hemisphere will have evening visibility.. >Use the search elements to determine your observing prospects.. > >Note that the zero decay terms of the circularized Shenzhou elements are >intentional; past missions made a number of small manoeuvres throughout their >flight, that essentially negated the effects of drag, apparently to achieve a >nearly exactly repeating ground track every 31 revolutions.. > >1. Launch on 2005 Oct 12 at 01:00 UTC > >1.1 Elliptical Parking Orbit until 2005 Oct 12 at 07:53 UTC > >The spacecraft and rocket body will be in nearly same orbit for the first approx >6 h and 53 m after launch. Below are search elsets for both.. > >Shenzhou 6 r 15.5 3.4 0.0 4.4 d >1 70601U 70600B 05285.08931662 .00809611 00000-0 60000-3 0 09 >2 70601 42.4153 27.4814 0102545 130.0626 230.9292 16.03716253 07 > >Shenzhou 6 7.8 2.5 0.0 5.4 d >1 70600U 70600A 05285.08933035 .00794136 00000-0 60000-3 0 09 >2 70600 42.4153 27.4814 0106040 130.0626 230.9292 16.02866600 01 > >The rocket's apogee will be nearly 5 km lower than Shenzhou's, as a result of >its separation manoeuvre upon orbital insertion. Therefore, Shenzhou will trail >a short distance behind its rocket.. > >1.2 Circularized Orbit after 2005 Oct 12 at 07:53 UTC > >Shenzhous 1, 3, 4 and 5 manoeuvred to raise their perigee as they passed through >apogee for the 5th time. Shenzhou 1 raised its perigee by only 8 km; Shenzhous >3, 4 and 5 raised it more than 130 km, to nearly circularize their orbit, and >Shenzhou 6 is expected to do the same. Approx 6 h and 53 m after launch, >Shenzhou 6 should be in this orbit: > >Shenzhou 6 7.8 2.5 0.0 5.4 d >1 70600U 70600A 05285.33849619 .00000000 00000-0 00000-0 0 02 >2 70600 42.4207 25.8822 0002833 248.3475 111.7085 15.78579562 08 > > >2. Launch on 2005 Oct 12 at 03:00 UTC > >2.1 Elliptical Parking Orbit until 2005 Oct 12 at 09:53 UTC > >The spacecraft and rocket body will be in nearly same orbit for the first approx >6 h and 53 m after launch. Below are search elsets for both.. > >Shenzhou 6 r 15.5 3.4 0.0 4.4 d >1 70601U 70600B 05285.17264995 .00809611 00000-0 60000-3 0 07 >2 70601 42.4153 57.5635 0102545 130.0626 230.9292 16.03716253 02 > >Shenzhou 6 7.8 2.5 0.0 5.4 d >1 70600U 70600A 05285.17266368 .00794136 00000-0 60000-3 0 07 >2 70600 42.4153 57.5635 0106040 130.0626 230.9292 16.02866600 06 > >The rocket's apogee will be nearly 5 km lower than Shenzhou's, as a result of >its separation manoeuvre upon orbital insertion. Therefore, Shenzhou will trail >a short distance behind its rocket.. > >2.2 Circularized Orbit after 2005 Oct 12 at 09:53 UTC > >Shenzhous 1, 3, 4 and 5 manoeuvred to raise their perigee as they passed through >apogee for the 5th time. Shenzhou 1 raised its perigee by only 8 km; Shenzhous >3, 4 and 5 raised it more than 130 km, to nearly circularize their orbit, and >Shenzhou 6 is expected to do the same. Approx 6 h and 53 m after launch, >Shenzhou 6 should be in this orbit: > >Shenzhou 6 7.8 2.5 0.0 5.4 d >1 70600U 70600A 05285.42182953 .00000000 00000-0 00000-0 0 03 >2 70600 42.4207 55.9643 0002833 248.3475 111.7085 15.78579562 03 > > >------------------------------------------------------------------------- >Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: >http://www.satobs.org/seesat/seesatindex.html > > = = = = = = = = = = = = = = = = = = = = With best regards, Jin Öì½ø 2005-10-11 ========================================================= Dr. Jin Zhu Tel.: +86-10-51583002 Director, Beijing Planetarium +86-13601369613 No. 138 Xizhimenwai Street fax: +86-10-68353003 Beijing 100044, CHINA email: jinzhu@bjp.org.cn ========================================================= ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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