Hi, Joe, Gerhard, Ted, all, Besides the uncertainty of the launch time, the drag factors in the elsets from http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaS SOP/orbit/SHUTTLE/SVPOST.html are ridiculously high, especially since the MM is dramatically decreasing during the chase of the ISS. Thus, those elsets have a very short lifetime, perhaps measured in a few revs. BTW, the corresponding URL for ISS elsets is http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaS SOP/orbit/ISS/SVPOST.html Joe Rao writes: > I would assume that upon liftoff from Florida, the ISS will be > running roughly 15 to 20 minutes "ahead" of the Shuttle. Here on the > US East Coast, I suspect that we might have a chance to see STS-114 > trailing roughly that many minutes behind the ISS on Wednesday evening > and about half that amount on Thursday evening. The situation as seen from here on the North Coast, not too far west of you, is different. I fed what I believe to be the appropriate elsets from spaceflight.nasa.gov into my ancient version of QuickSat (highly recommended) and find the interval between the objects to be much greater on the 14th UT. Many details appear below. We are close enough to the solstice that these events, though evening rather than morning, still occur quite late for many civilians. > By Friday evening, both ISS and the orbiter should be docked and will > appear as a singular object. Yes. Of course, we can anticipate that updated prospective elsets may appear in the next few days. Cheers. Walter Nissen wnissen@tfn.net -81.8637, 41.3735, 256m elevation --- I'm a federal judge. My job is to jail reporters who are just doing their jobs, although none of the criminals have even been charged. --- Elsets from spaceflight.nasa.gov: ISS weav 1 25544U 98067A 05194.73022037 .00020000 00000-0 20000-3 0 9079 2 25544 51.6444 124.9392 0002946 106.9413 253.2072 15.71506471 19863 NC-1 weav via molc 191.96 for 7/14 227 X 307 km 1 99114U 05195.06995586 .00189937 00000-0 37621-3 0 9025 2 99114 51.6480 123.4651 0060182 182.0050 178.0896 16.02742764 58 ISS weav 1 25544U 98067A 05195.68405725 .00020000 00000-0 20000-3 0 9084 2 25544 51.6438 120.0583 0002821 113.3258 246.8201 15.71556048 20012 SHUTTLE weav for 7/15 1 99114U 05195.94576334 .00189937 00000-0 37621-3 0 9051 2 99114 51.6433 118.8044 0017046 210.0669 149.9527 15.92093886 194 --- Sample input to QuickSat: 2005 7 Year, month number 13 13 Start date, end date -0.5 .5 Start time, end time 41.3735 81.8637 840. Nissen, OH 0 UT correction and time zone name for UT to CDT F True means generate Radio predictions 1950 Epoch of predicted RA, Dec 17.5 Magnitude limit 4 Altitude cut-off value 0.1 The search/step parameter value F True means accept only the most recent elements for each object F True means ignore shadow test F 0 True means generate multiple prediction points, how many each way F True means output distance values in miles F True means generate a blank line before each object's prediction. qs.mag Intrinsic magnitudes input file 714.tk Output file 714.tle Elements input file EOF --- Edited output from QuickSat: 41.374 81.864 840. Nissen, OH 1950 17.5 4 F F F F F *** 2005 July 12 *** Times are UT *** 2 0 9 3 H M S TIM AL AZI C U MAG REVS HGT SHD RNG EW PHS R A DEC 25544 ISS Complex .1 2 17 15 .0 16 16 C 104 2.1 7.0 361 296 1041 1.2 113 153 61.1 25544 ISS Complex .1 3 51 51 .0 31 317 116 .8 8.0 361 27 649 1.7 123 1134 55.0 *** 2005 July 13 *** Times are UT *** 159 9 4 H M S TIM AL AZI C U MAG REVS HGT SHD RNG EW PHS R A DEC 25544 ISS Complex .1 2 44 42 .0 29 25 C 113 .5 23.0 361 173 693 1.7 102 010 65.7 25544 ISS Complex .1 4 17 33 .0 11 286 118 3.1 24.0 361 29 1282 .6 116 12 2 19.8 *** 2005 July 14 *** Times are UT *** 158 9 5 H M S TIM AL AZI C U MAG REVS HGT SHD RNG EW PHS R A DEC 25544 ISS Complex .1 1 36 15 .0 17 17 C 105 1.8 6.0 361 346 1002 1.3 106 1 7 61.4 99114 NC-1 2 8 41 .0 17 23 C 111 21.0 .8 262 178 748 1.6 104 1 0 58.8 25544 ISS Complex .1 3 11 45 .0 71 325 121 -1.2 7.0 361 29 381 3.2 89 1556 55.5 99114 NC-1 3 40 7 .0 10 291 118 23.0 1.8 258 25 1026 .7 128 1115 22.4 *** 2005 July 15 *** Times are UT *** 157 9 6 H M S TIM AL AZI C U MAG REVS HGT SHD RNG EW PHS R A DEC 25544 ISS Complex .1 2 3 40 .0 32 27 C 115 .2 7.0 361 271 638 1.8 96 23 4 66.7 99114 SHUTTLE 2 11 56 .0 33 28 C 116 19.7 2.7 306 189 540 2.1 95 23 2 65.8 25544 ISS Complex .1 3 37 34 .0 18 268 124 1.6 8.0 361 24 962 .6 105 1241 10.3 99114 SHUTTLE 3 43 54 .0 10 275 122 23.0 3.8 305 21 1189 .4 114 12 3 10.3 ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Mon Jul 11 2005 - 13:07:17 EDT