One_Sgp4.SatFunctions.calcSatSubPoint possibly returning incorrect Longitude

[ykhaled]

Function "calcSatSubPoint" returning incorrect latitude in latest version 1.0.9. Workign correctly in earlier version 1.0.8.

To Reproduce

string str1 = "ISS (ZARYA)";
string str2 = "1 25544U 98067A   19355.61517352  .00000218  00000-0  11831-4 0  9992";
string str3 = "2 25544  51.6432 152.1290 0007831  58.9521  16.9775 15.50124818204334";
Tle tleISS = ParserTLE.parseTle(str2, str3, str1);
EpochTime startTime = new EpochTime(DateTime.UtcNow.AddHours(-5));
EpochTime earthStartTime = new EpochTime(DateTime.UtcNow.AddHours(-5));
EpochTime stopTime = new EpochTime(DateTime.UtcNow.AddHours(5));

One_Sgp4.Sgp4 sgp4Propagator = new Sgp4(tleISS, Sgp4.wgsConstant.WGS_84);
sgp4Propagator.runSgp4Cal(startTime, stopTime, 1);
List<One_Sgp4.Sgp4Data> resultDataList = new List<Sgp4Data>();
resultDataList = sgp4Propagator.getRestults();
foreach (var result in resultDataList)
{
One_Sgp4.Coordinate satOnGround = One_Sgp4.SatFunctions.calcSatSubPoint(earthStartTime,result, Sgp4.wgsConstant.WGS_84);
double longitude = satOnGround.getLongitude()
earthStartTime.addMinutes(1);
}

[1manprojects]

The longitude value can in certain cases be smaller then negative two pi thus resulting in a wrong negatvie longitude value. Bug will be fixed with the next release. (planned: end of December 2019 )

[1manprojects]

Issue has been fixed with Release 1.0.10