Re: NOSS 2-3 Rk was late last night.

Ed Cannon (ecannon@mail.utexas.edu)
Fri, 15 Jan 1999 22:15:45 -0600

I wrote:

> Last night (early 15 Jan. UTC) NOSS 2-3 Rk (23907, 96-29B) was late,
> perhaps as much as a minute.  

Tonight (Friday night local, early 16 Jan. UTC) I got a better fix on 
NOSS 2-3 Rk, and I think it was about 80 seconds late, plus or minus 
a few seconds.  Again the observing location was Univ. of Texas at 
Austin, 30.286N, 97.739W, 150m -- not a very good site.
 
> It was a beautiful night.  Even with one-power only from this poor
> location, I was able to see 14 satellites ....

Tonight I saw *15* one-power satellites from the same poor location!
When a clear night is combined with a good number of good passes, 
it's neat!  Three of them tonight were Iridiums (11A at a solid -1, 
only 5 deg. above western horizon; 46 at +2 -- faint at only 7 deg. 
above horizon; and 58 at +0, very nice).  Two objects tonight were 
UNIDs, in that they were predicted to be fainter than my original 
magnitude cut-off, but in checking I found them to be OAO 1 Rk (02144, 
66-31B) and Aureole 1 Rk (05730, 71-119B).
 
> ... one of the 14 last night ... an UNID ... was ISS!

There was a nice pass of ISS tonight, and also a pretty good HST pass 
-- not unusually bright, but I watched it for almost 5 minutes.

Lacrosse 3 (25017, 97-64A) flared to +1 at about 2:01:55-2:02:00, 
dimmed, brightened somewhat again before culmination, dimmed again to
very faint, and then brightened again to about +3 before I lost it in
the south.  I think these were effects due to the Sun-object-observer
angle.  (I'm sure "they" would hate for it to go to tumbling!)  I
recommend looking for Lacrosse flares when they're on evening passes
culminating west of the zenith.  I've seen several -- always, I think, 
north of culmination on a southbound pass; at least one of them was 
quite low in the north, long before culmination.
 
Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA