--- In guide-user@y..., "kfetter" <kevin_fetter@h...> wrote:

> Bill
>
> I can compute where on earth, to go to see the iss go across the

sun

> or moon's disk.
>
> Is it possible to show a map, like you get when click in "show
> eclipse", with a line on it. The line would be where to go to be at
> the approx centre line of the event. At the approx centre line the
> iss would go across the approx centre of the sun of moon, and thus
> the event will last the longest.
>
> Format of latitude and longitude data, that I can get. This data
> would be used to make up the line shown on the map.
>
> Date Time( UT ) Latitude Longitude
> 9 Aug 2002 00:22:11.00 -52.741 126.170
> 9 Aug 2002 00:22:21.00 -50.928 129.915
> 9 Aug 2002 00:22:31.00 -49.697 132.313
> 9 Aug 2002 00:22:41.00 -48.676 134.217
>
> Computed using this orbital element for the iss
>
> ISS (ZARYA)
> 1 25544U 98067A 02221.43634259 .00017446 00000-0 23857-3 0

286

> 2 25544 51.6372 145.6626 0018039 120.6251 26.1775

15.57353553212335

>
> If you use that latitude and longitude, at the time given, you
> should see the iss on the moon.
>
> By having the centre line path on a map, I could see what towns and
> cities are near the centre line.
>
> Just a suggestion, if it's to hard then forget about it. I hope you
> understand what I would like to see.
>
> Thanks
>
> Kevin

Hi Bill!

Unfortunatly I am one of those users who have, until now, not managed
to overcome the y2k bug for satellites in Guide. Transits of the ISS
would be the only thing I would realy need that function for, since
the visibility of satellites from a certain position can very easyly
be obtained from several websites, like Chris Peats "heavens above".
I once asked him about a groundtrack and he said, he is already
planning such a service. The ISS should still grow quite a bit to be
seen as a kind of sunspot, crossing the suns disk in less than 1
second. I pointed out to Chris Peat, that the pediction of Iridium
flares he is offering on his page is quite the same problem, only
with the additional complication of taking into acount the attitude
of a mirror. But I am vey sceptic, that the "show eclipse" function
of Guide can be applied to this task. However, as long as I can not
even show satellites in my Guide past the time 2000 01 01, 1200UT,
this remains a very theoretical problem for me.