Re: BS-3A (Yuri 3A)

Robert G Fenske Jr (fenske@rgfpc.electro.swri.edu)
Mon, 1 Mar 1999 08:41:46 -0600 (CST)

On Mon, 1 Mar 1999, Ed Cannon wrote:

> Regarding BS/Yuri 3A (20771, 90-77A), the last two nights 
> Mike McCants and I also observed the bright-bright-faint 
> flash pattern that Rob Matson reported.  Mike discovered a 
> very small but repeated asymmetry in the timings, and I 
> got it also, although I barely had enough times to see it:  
> 
>   Bright   Bright    Faint
>   ------   ------    -----
>             87.76    88.32
>    87.42    87.67    88.22
>    87.67    87.67  
>   175.78    87.77    88.23
>    87.55    87.82

	I observed this sat last night starting about 9:40pm local (03:40
Mar 1 UTC) as it drifted through Orion.  I used both my 10x50 binoculars
and just my eyes. I did see 3 approx. +2 flashes and one +3 flash with my
eyes.  I only saw every third flash, even with the binoculars.  I measured
two of these periods at 527+-1 sec, which gives a close-to-the-above 
average 87.8 sec / flash.  It was rather fun trying to estimate where in
Orion I would see the next flash...with over 4 minutes 'tween the primary
flashes I had plenty of time to make an estimation.

	On a different note, these days Mercury+Jupiter+Venus+Saturn make
a nice bright string of planets soon after sunset.

Robert Fenske, Jr.   rfenske@swri.edu    Sw     |The Taming the C*sm*s series:
Southwest Research Institute            /R---\  |
Signal Exploitation & Geolocation Div  | I    | |"The Martian canals were the
San Antonio,Texas USA  ph:210-522-3931  \----/  | Martians' last ditch effort."