[ATMoB-discuss] RE: (NSAAC) Images of last night's ISS/Shuttle pass...

[John Sheff]

What I find surprising is that Heavens Above gave the magnitude of the ISS
as -0.9, and of Atlantis as -1.4, in separate calculations. Those are
*negative* magnitudes. That means HA had predicted Atlantis to be a
half-magnitude brighter than the ISS, and that, too, is obviously in error.
Can anyone estimate what the magnitudes of the two objects we saw last night
actually were, at maximum?

- John Sheff
  Cambridge, MA

-----Original Message-----
From: atmob-discuss-bounces at atmob.org
[mailto:atmob-discuss-bounces at atmob.org] On Behalf Of Pinizzotto, Russell
Sent: Thursday, June 21, 2007 12:53 PM
To: North Shore [MA] Amateur Astronomy Club members list;
atmob-discuss at atmob.org
Subject: [ATMoB-discuss] RE: (NSAAC) Images of last night's ISS/Shuttle
pass...

John:

Heavens-Above doesn't have the most up-to-date tle's.  Since the shuttle
and the station were separating, it's not surprising that the prediction
didn't match the facts.

The ISS looks reddish because of the solar panels, while the Shuttle
doesn't.  The colors I saw matched your IDs!

Best Regards,
Russ
---------------------------------------------------------------
 
R.F. Pinizzotto, PhD
Dean of the Faculty of Science and Engineering
Merrimack College
315 Turnpike Street
North Andover, MA   01845
 
Voice:(978) 837-5314
Fax:  (978) 837-5029
 
PinizzottoR at merrimack.edu
 
---------------------------------------------------------------
_______________________________________________
ATMoB-discuss mailing list
ATMoB-discuss at atmob.org
http://lists.atmob.org/mailman/listinfo/atmob-discuss