yodaUtility/sgp4/ReleaseNotes.txt


Release Notes
SxP4Test/SGP4/SDP4 source code
Michael F. Henry
www.zeptomoby.com/satellites

10/16/2005 Do not use time_t type when calculating the epoch for ECI 
           coordinates. Thanks to the U.K's M. Trethewey for locating yet 
           another time_t problem.
           
           Updated class cJulian with a new constructor and "span" functions.
   
07/19/2005 Fixed error in calculating m_kmPerigeeRec, which is not used by 
           SGP4 or SDP4 calculations. Added m_kmApogeeRec and corresponding
           accessor function cOrbit.Apogee().
           
06/22/2005 MSVC++ 7.0 compiler/library change: pow(int, int) now returns 0 if
           the exponent is less than 0. Updated ExpToDecimal() to use 
           pow(double, double) instead. This was not pow() behavior in 
           MSVC++ 6.0. Thanks to Dr. Andy Register for first reporting this 
           issue.

08/29/2004 More time_t problems: A truncation error in CJulian::toTime() was
           causing time_t values to have an average error of 0.5 seconds from
           their Julian counterpart.
           
05/23/2004 Julian date class now calculates year, month, day, without using
           time_t type, which only has a resolution of 1 second. This was 
           causing errors when calculating azimuth and elevation for 
           satellites which pass near the zenith. Thanks to Markus Knapek 
           in Germany for first reporting this issue.
                               
12/07/2003 First writing.
1	kusanagi	1.1
2			Release Notes
3			SxP4Test/SGP4/SDP4 source code
4			Michael F. Henry
5			www.zeptomoby.com/satellites
6
7			10/16/2005 Do not use time_t type when calculating the epoch for ECI
8			coordinates. Thanks to the U.K's M. Trethewey for locating yet
9			another time_t problem.
10
11			Updated class cJulian with a new constructor and "span" functions.
12
13			07/19/2005 Fixed error in calculating m_kmPerigeeRec, which is not used by
14			SGP4 or SDP4 calculations. Added m_kmApogeeRec and corresponding
15			accessor function cOrbit.Apogee().
16
17			06/22/2005 MSVC++ 7.0 compiler/library change: pow(int, int) now returns 0 if
18			the exponent is less than 0. Updated ExpToDecimal() to use
19			pow(double, double) instead. This was not pow() behavior in
20			MSVC++ 6.0. Thanks to Dr. Andy Register for first reporting this
21			issue.
22
23			08/29/2004 More time_t problems: A truncation error in CJulian::toTime() was
24			causing time_t values to have an average error of 0.5 seconds from
25			their Julian counterpart.
26
27			05/23/2004 Julian date class now calculates year, month, day, without using
28			time_t type, which only has a resolution of 1 second. This was
29			causing errors when calculating azimuth and elevation for
30			satellites which pass near the zenith. Thanks to Markus Knapek
31			in Germany for first reporting this issue.
32
33			12/07/2003 First writing.