TiPS, character of pass, orientation

Walter Nissen (dk058@cleveland.Freenet.Edu)
Mon, 26 Aug 1996 09:03:07 -0400

A very nice object. 
 
Walter I. Nissen, Jr., CDP, dk058@cleveland.freenet.edu, 55 Barrett RD #808, 
Berea, OH 44017-1657, USA, 216-243-4980, -81d 51.823', 41d 22.413', 256m, 11x80 
yy-lllpp yy-mm-dd hh:mm:ss.ss NNN d->d al v.a UML m1  sp RN Comments 
96- 29 ? 96-08-26  8:59:53    WN  S->N 49   5 LML 5?6?   xx TiPS, sharp, easy 
96- 29 ? 96-08-26  9: 1:12    WN  S->N 58                   TiPS, Culmination 
96- 29 ? 96-08-26  9: 2:24.76 WN  S->N 51  10 LML 5?6?   xx TiPS, difficult 
96- 29 ? 96-08-26  9: 2:24.76 WN  S->N appulsed 35 gamma Cep, length of tether 
 = sep of nearby double star = 5' or 6' 
96- 29 ? 96-08-26  9: 2:39.12 WN  S->N 48         3?4? 1    TiPS, F, lower end 
96- 29 ? 96-08-26  9: 2:40.79 WN  S->N 48         5?   1    TiPS, F, lower end 
96- 29 ? 96-08-26  9: 3:27.26 WN  S->N 40         4?5? 1    TiPS, F, lower end 
96- 29 ? 96-08-26  9: 3:27.86 WN  S->N 40         6?   1    TiPS, F, lower end 
96- 29 ? 96-08-26  9: 3:47.19 WN  S->N 37                   TiPS, lost 
Similar time of morning, different part of sky than night before, same 
general character of apparition.  Sharp and bright just after emerging 
from the shadow of Earth toward the South, dimmed steadily (by which I 
mean progressively, not that every passing moment brought a perceptible 
decline; a very gradual dimming) as it moved North, disappeared at high 
altitude.  This time while it was flashing I could faintly see the tether. 
 
The character of these apparitions emphasizes the importance of having a 
good shadow calculation available.  If you want to see it while it's 
looking good you have to catch it just after it emerges from the shadow. 
One of the very popular and enthusiastically recommended programs has a 
pathetically poor shadow calculation.  I've mentioned this problem before 
and I really don't feel like publicly thrashing that particular author. 
QuickSat does the shadow very well.  Unless you ask it to (for 
self-illuminated objects like the shuttle orbiters, radar satellites, 
glowing re-entries, etc.), it won't show you points within the shadow. 
 
Also timed C* 2251 r and C* 1898 r, if anyone wants the periods. 
 
Cheers. 
 
Walter Nissen                   dk058@cleveland.freenet.edu

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Lightness has its place -- Giverny.  Look into it.