dear friends, yesterday evening I watched my first satellite of which I made prediction charts. It was cosmos 405 Time(gmt) Az El H Range RA/2000 D/2000 Hdg Vrt Mag 07:25:39PM 181.7 22.2 U 01311 19:41.8 -28d28 013 002 +4.5 07:27:00PM 176.5 42.8 U 00847 20:00.7 -07d49 013 357 +3.5 07:28:20PM 102.4 78.9 L 00616 20:45.4 +36d10 017 290 +2.7 07:29:41PM 018.9 43.8 D 00840 00:18.5 +75d12 065 259 +3.6 07:31:01PM 013.6 22.9 D 01301 05:18.5 +69d55 138 328 +4.7 Cosmos 405 =1971 028 =N05117 D/S=0.57 It's magnitude was about 4.5 and it passed near gamma cygni. Yesterday I made manual calculation to find it, using datas from garching and charts by way of an astronomy program. At the moment I'm preparing charts for tonight using the two line element sets, for a list of bright satellites. I put it on spysat but there is a little problem with datas I says "checksum failure on line...possible data corruption satellite..." I deleted all datas with this error, but I don't understand which kind of problem is this. It seems an error into the code of the datas security. what is it ? thanks in advantage. A. V. Z. T. *********************************************************** ---------------------------- astronomers click here: http://www.geocities.com/Area51/Dimension/5189/astrow.htm ----------------------------------------------------------- Nico Lonetti polaris@diemme.it Cosenza - Italy ----------------------------------------------------------- G.A.M. Gruppo Astrofili Menkalinan, Time zone: Gmt + 2 Italy Alt. 225 m. 39.322 N Latitude -16.216 E Longitude ----------------------------------------------------------- http://www.geocities.com/Area51/Dimension/5189/gam.htm ----------------------------------------------------------- mIRC location: IRCNet: EU, IT, Pisa IRC server : irc.ccii.unipi.it Port : 6667 Group : ircnet Nick name : lonnic ----------------------- "Leaving the wonderful orient water Sun rises to the sky to bring light to the immortals and to the men that till the soil and dye " ----------------------- "Lasciando le acque del meraviglioso oriente il Sole si innalza nel firmamento per portare luce agli immortali e agli uomini che arano la terra e muoiono."(Omero - Odissea) SATOR AREPO TENET OPERA ROTAS A N A I P N O E M I A E R E A I M E O N P I A N A