Shadow Conditions of Earth Satellites - Kozai Orbit

Description:Accurate predictions of shadow conditions for any type of satellite orbit can be determined by using a combination of one-dimensional minimization and root finding. The algorithm used here searches for minimum values of the angle between the shadow axis and the satellite’s position vector as a function of time. If this angle lies within the penumbra angle, the algorithm uses Brent's root-finding method to look backward and forward relative to this minimum time to find entrance and exit conditions. This method can also be used to determine entrance and exit relative to the umbra, penumbra and cylindrical shadows.
Author:C. Deagle, Jr.
Downloaded file size:377,537 bytes
Size on calculator:85 KB
User rating:Not yet rated (you must be logged in to vote)
Primary category:Science
File date:2022-11-09 12:48:55
Creation date:2022-11-09
Source code:Included
Download count:76
Version history:2023-05-29: Added to site
Archive contents:
  Length      Date    Time    Name
---------  ---------- -----   ----
   386311  2012-11-13 07:24   shadow.pdf
    86768  2022-11-09 06:02   shadow2.hpprgm
     3931  2022-11-09 13:48   shadow2.html
    41222  2022-11-09 06:43   shadow2.txt
---------                     -------
   518232                     4 files
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