Re: How Visible Will ISS (Babylon) Be???

Mike DiMuzio (
Mon, 21 Dec 1998 17:46:37 +0000

James Husnay Sr. said:
> Now, if this is true and the brilliance of Jupiter's reflection
> prevents this naked eye ability to see the moons. Will it be possible if
> conditions are at their best, does anyone know if there is a chance we
> would be able to see the ISS/Babylon's actual structure "Naked eye"?
> And although it seemed meant for the moment, is it possible "You will
> see it", meant they were referring to the possibility of seeing the
> actual structure upon completion?????
	Doing just a quick estimate based on its completed
size of about 100 meters, it's apparent angular diameter
at a zenith pass (assuming altitude of 240 miles, this may change),
ISS may reach in the mid 50 arc seconds.  The human eye
usually can pick up objects of 1 minute of arc, 
or 60 arc seconds, so ISS conceivably may be visible as
more than a point source, but we will have to wait until 2004 or so 
to be sure.

41.087N  80.722W 330 meters

Mike DiMuzio