Re: Mir/Shuttle pass observed

Ed Cannon (
Fri, 26 Sep 1997 07:38:23 -0400

Bryan Dort ( wrote:

>I observed the MIR / Shuttle pass this morning. Mir was "WOW, that's
>bright" (-2 mag) rising in the west. Right on with the latest Molczan
>elset. ...
>Shuttle was 15 minutes behind. Same path only a little lower in the sky
>(about 20 deg elevation) and about 0 mag.

I had the same results with Mir, mag. -2, very nice pass still mag. 0 or 
1 as it passed near the Moon in the east at 11:56:04 UT (solar elev. -6).
But apparently I didn't wait long enough for Shuttle!  My elset yielded 
a pass with a near-zenith culmination at 12:04:39, less than 8 minutes 
behind Mir.  The solar elevation at that time was -4.5; I could still 
see Capella, which was more or less near where it was to have passed.  
But if the Shuttle was still 15 minutes behind on this orbit, the 
culmination would have been at 12:11, and I quit looking about 12:06.  
I thought it was more likely to be early than late....

Thank you to Pierre and Mike for the Lacrosse 2 Rk elements; I was able 
to observe it on a nice mag. 1-2 pass last night (1:35:50 UT 9/26/97) 
and again this morning (11:22:39 UT 9/26/97), not quite as bright.

Ed Cannon
Austin, Texas, USA -- 30.3086N, 97.7279W, 165m