Re: Geostationary satellite question

From: Thierry Legault via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 10 Sep 2017 21:32:22 +0200
hello
the declination angle of geostationary satellites 
is much smaller than the latitude of the 
observer. For instance, for an observer at 50N, the declination is -8.8.

This is a quite simple trigonometric problem that 
all studients (can) solve at school, it takes 
into account the altitude of geostationary 
satellites (35784 km) and the radius of Earth 
(6378 km), involving one sine, one cosine and one 
arc tangent. Here is the declination for different latitudes:

0  0
10 -2.1
20 -4.2
30 -6.0
40 -7.6
50 -8.8
60 -9.6
70 -10.1
80 -10.3

:-)

regards

Thierry Legault
www.astrophoto.fr


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Received on Sun Sep 10 2017 - 14:34:20 UTC

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