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Updated DateTimeTest and TLETests with millisecond precision (#65)
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* Updated DateTimeTest and TLETests with millisecond precision

Added millisecond precision to the DateTimeTest.cs and TLETests.cs test case comparisons. Also updated the TargetFramework in IO.Astrodynamics.nuspec and IO.Astrodynamics.csproj from net6.0 to net8.0, and updated the version from 1.8.0 to 1.9.0. These changes are to ensure more accurate timezone conversion and increase compatibility with newer frameworks.

* Add precision parameter to Assert.Equal in TLETests

Updated the unit tests in TLETests.cs to include a precision parameter in the Assert.Equal method. This helps to avoid test failure due to floating point precision issues, specifically where minor differences in calculated orbital parameters could cause an otherwise valid test to fail.
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@sylvain-guillet
sylvain-guillet authored Nov 22, 2023
1 parent 5d1c488 commit 8d5e3ed
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Showing 14 changed files with 172 additions and 185 deletions.
127 changes: 59 additions & 68 deletions IO.Astrodynamics.Tests/APITest.cs
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18 changes: 9 additions & 9 deletions IO.Astrodynamics.Tests/Body/CelestialBodyTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -85,8 +85,8 @@ public void FindOccultationsEclipse()
ShapeType.Ellipsoid, moon, ShapeType.Ellipsoid, OccultationType.Any, Aberration.None, TimeSpan.FromMinutes(1.0)).ToArray();
Assert.Single(res);

Assert.Equal(new DateTime(2001, 12, 14, 20, 10, 50, 573), res[0].StartDate);
Assert.Equal(new DateTime(2001, 12, 14, 21, 36, 33, 019), res[0].EndDate);
Assert.Equal(new DateTime(2001, 12, 14, 20, 10, 50, 573), res[0].StartDate, TimeSpan.FromMilliseconds(1));
Assert.Equal(new DateTime(2001, 12, 14, 21, 36, 33, 019), res[0].EndDate, TimeSpan.FromMilliseconds(1));
}

[Fact]
Expand All @@ -97,10 +97,10 @@ public void FindWindowsOnDistanceConstraint()
TestHelpers.MoonAtJ2000, RelationnalOperator.Greater, 400000000, Aberration.None, TimeSpan.FromSeconds(86400.0));
var windows = res as Window[] ?? res.ToArray();
Assert.Equal(4, windows.Count());
Assert.Equal("2007-01-08T00:11:07.6290000 (TDB)", windows.ElementAt(0).StartDate.ToFormattedString());
Assert.Equal("2007-01-13T06:37:47.9480000 (TDB)", windows.ElementAt(0).EndDate.ToFormattedString());
Assert.Equal("2007-02-04T07:02:35.2840000 (TDB)", windows.ElementAt(1).StartDate.ToFormattedString());
Assert.Equal("2007-02-10T09:31:01.8380000 (TDB)", windows.ElementAt(1).EndDate.ToFormattedString());
Assert.Equal("2007-01-08T00:11:07.6285910 (TDB)", windows.ElementAt(0).StartDate.ToFormattedString());
Assert.Equal("2007-01-13T06:37:47.9481440 (TDB)", windows.ElementAt(0).EndDate.ToFormattedString());
Assert.Equal("2007-02-04T07:02:35.2843758 (TDB)", windows.ElementAt(1).StartDate.ToFormattedString());
Assert.Equal("2007-02-10T09:31:01.8379404 (TDB)", windows.ElementAt(1).EndDate.ToFormattedString());
}

[Fact]
Expand All @@ -112,9 +112,9 @@ public void FindWindowsOnCoordinateConstraint()

var windows = res as Window[] ?? res.ToArray();
Assert.Equal(2, windows.Length);
Assert.Equal("2005-10-03T17:24:29.0990000 (TDB)", windows[0].StartDate.ToFormattedString());
Assert.Equal("2005-10-16T17:50:20.7050000 (TDB)", windows[0].EndDate.ToFormattedString());
Assert.Equal("2005-10-31T00:27:02.6710000 (TDB)", windows[1].StartDate.ToFormattedString());
Assert.Equal("2005-10-03T17:24:29.0992341 (TDB)", windows[0].StartDate.ToFormattedString());
Assert.Equal("2005-10-16T17:50:20.7049530 (TDB)", windows[0].EndDate.ToFormattedString());
Assert.Equal("2005-10-31T00:27:02.6705884 (TDB)", windows[1].StartDate.ToFormattedString());
Assert.Equal("2005-11-03T00:00:00.0000000 (TDB)", windows[1].EndDate.ToFormattedString());
}

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4 changes: 2 additions & 2 deletions IO.Astrodynamics.Tests/Body/InstrumentTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -104,8 +104,8 @@ public void FindWindowInFieldOfView()
//Read results
Assert.Equal(2, res.Count());
Assert.Equal("2021-06-10T00:00:00.0000000 (TDB)", res.ElementAt(0).StartDate.ToFormattedString());
Assert.Equal("2021-06-10T00:29:05.3690000 (TDB)", res.ElementAt(0).EndDate.ToFormattedString());
Assert.Equal("2021-06-10T01:03:45.4720000 (TDB)", res.ElementAt(1).StartDate.ToFormattedString());
Assert.Equal("2021-06-10T00:29:05.3691494 (TDB)", res.ElementAt(0).EndDate.ToFormattedString());
Assert.Equal("2021-06-10T01:03:45.4719345 (TDB)", res.ElementAt(1).StartDate.ToFormattedString());
Assert.Equal("2021-06-10T01:47:27.0000000 (TDB)", res.ElementAt(1).EndDate.ToFormattedString());

Assert.Throws<ArgumentNullException>(() => spacecraft.Intruments.First().FindWindowsInFieldOfViewConstraint(
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11 changes: 6 additions & 5 deletions IO.Astrodynamics.Tests/IO.Astrodynamics.Tests.csproj
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Original file line number Diff line number Diff line change
@@ -1,21 +1,22 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>disable</ImplicitUsings>
<Nullable>disable</Nullable>

<IsPackable>false</IsPackable>

<TargetFramework>net8.0</TargetFramework>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
<PackageReference Include="xunit" Version="2.4.1" />
<PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
<PackageReference Include="xunit" Version="2.6.2" />
<PackageReference Include="xunit.runner.visualstudio" Version="2.5.4">
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
<PrivateAssets>all</PrivateAssets>
</PackageReference>
<PackageReference Include="coverlet.collector" Version="3.1.2">
<PackageReference Include="coverlet.collector" Version="6.0.0">
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
<PrivateAssets>all</PrivateAssets>
</PackageReference>
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24 changes: 12 additions & 12 deletions IO.Astrodynamics.Tests/Maneuvers/LaunchTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -63,16 +63,16 @@ public void FindLaunchWindows()
var launchWindows = res as LaunchWindow[] ?? res.ToArray();
Assert.Equal(2, launchWindows.Count());
var firstWindow = launchWindows.ElementAt(0);
Assert.Equal(Convert.ToDateTime("2021-06-02T02:51:10.7080000"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T02:51:10.7080000"), firstWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T02:51:10.7077003"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T02:51:10.7077003"), firstWindow.Window.EndDate);
Assert.Equal(135.195514, firstWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(137.447953, firstWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, firstWindow.InertialInsertionVelocity, 6);
Assert.Equal(7384.478859, firstWindow.NonInertialInsertionVelocity, 6);

var secondWindow = launchWindows.ElementAt(1);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:11:30.8360000"), secondWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:11:30.8360000"), secondWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:11:30.8362882"), secondWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:11:30.8362882"), secondWindow.Window.EndDate);
Assert.Equal(44.804486, secondWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(42.552047, secondWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, secondWindow.InertialInsertionVelocity, 6);
Expand All @@ -96,8 +96,8 @@ public void FindLaunchWindowsByDay()
var res = launch.FindLaunchWindows(new Window(epoch, TimeSpan.FromDays(1.0)), Constants.OutputPath);
Assert.Single(res);
var firstWindow = res.ElementAt(0);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:10:50.5970000"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:10:50.5970000"), firstWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:10:50.5974783"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T18:10:50.5974783"), firstWindow.Window.EndDate);
Assert.Equal(44.804486, firstWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(42.552047, firstWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, firstWindow.InertialInsertionVelocity, 6);
Expand All @@ -121,8 +121,8 @@ public void FindSouthLaunchWindowsByDay()
var res = launch.FindLaunchWindows(new Window(epoch, TimeSpan.FromDays(1.0)), Constants.OutputPath);
Assert.Single(res);
var firstWindow = res.ElementAt(0);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:09:47.4760000"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:09:47.4760000"), firstWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:09:47.4760643"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:09:47.4760643"), firstWindow.Window.EndDate);
Assert.Equal(55.142078, firstWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(53.582359, firstWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, firstWindow.InertialInsertionVelocity, 6);
Expand All @@ -146,16 +146,16 @@ public void FindSouthLaunchWindows()
var res = launch.FindLaunchWindows(new Window(epoch, TimeSpan.FromDays(1.0)), Constants.OutputPath);
Assert.Equal(2, res.Count());
var firstWindow = res.ElementAt(0);
Assert.Equal(Convert.ToDateTime("2021-06-02T08:55:43.6080000"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T08:55:43.6080000"), firstWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T08:55:43.6080970"), firstWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T08:55:43.6080970"), firstWindow.Window.EndDate);
Assert.Equal(124.857922, firstWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(126.417641, firstWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, firstWindow.InertialInsertionVelocity, 6);
Assert.Equal(7381.311323, firstWindow.NonInertialInsertionVelocity, 6);

var secondWindow = res.ElementAt(1);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:08:24.8030000"), secondWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:08:24.8030000"), secondWindow.Window.EndDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:08:24.8033092"), secondWindow.Window.StartDate);
Assert.Equal(Convert.ToDateTime("2021-06-02T15:08:24.8033092"), secondWindow.Window.EndDate);
Assert.Equal(55.142078, secondWindow.InertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(53.582359, secondWindow.NonInertialAzimuth * IO.Astrodynamics.Constants.Rad2Deg, 6);
Assert.Equal(7667.02685, secondWindow.InertialInsertionVelocity, 6);
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89 changes: 42 additions & 47 deletions IO.Astrodynamics.Tests/Mission/ScenarioTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -110,61 +110,56 @@ public void Propagate()

// Read maneuver results
var maneuver = spacecraft.StandbyManeuver;
Assert.Equal("2021-03-04T00:32:49.8180000 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:58.2100000 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:49.8180000 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:58.2100000 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(8.392, maneuver.ThrustWindow.Length.TotalSeconds);
Assert.Equal(
new Vector3(-97.07142021113363, 107.83054000114183, -119.89750368038308),
((ImpulseManeuver)maneuver).DeltaV);


Assert.Equal(419.6270875080256, maneuver.FuelBurned);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T01:15:39.8410000 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:02.1870000 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T01:15:39.8410000 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:02.1870000 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(22.346, maneuver.ThrustWindow.Length.TotalSeconds);
Assert.Equal(new Vector3(-462.37361865043476, -165.7923214353268, 234.3316344286659),
((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(1117.349455081975, maneuver.FuelBurned);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T01:16:13.2430000 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T04:59:20.7690000 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:13.2430000 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:22.7850000 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(9.542, maneuver.ThrustWindow.Length.TotalSeconds);
Assert.Equal(new Vector3(-139.4953930672767, 85.72345306943599, 194.88266433187357),
((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(477.1217927049922, maneuver.FuelBurned);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T05:23:58.7300000 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T05:24:07.2980000 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T05:23:58.7300000 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T05:24:07.2980000 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(8.568, maneuver.ThrustWindow.Length.TotalSeconds);
Assert.Equal(new Vector3(134.22725061486776, -81.4515454171397, -183.87034411714475),
((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(428.43642901863194, maneuver.FuelBurned);
Assert.Equal("2021-03-04T00:32:49.8175394 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:58.2100803 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:49.8175394 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T00:32:58.2100803 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(8.3925409000000002, maneuver.ThrustWindow.Length.TotalSeconds, 3);
Assert.Equal(new Vector3(-97.0714098295484, 107.8305292474044, -119.8974902969949), ((ImpulseManeuver)maneuver).DeltaV);


Assert.Equal(419.62704377403645, maneuver.FuelBurned);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T01:15:39.8402441 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:02.1873755 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T01:15:39.8402441 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:02.1873755 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(22.347131399999999, maneuver.ThrustWindow.Length.TotalSeconds, 3);
Assert.Equal(new Vector3(-462.3769514474425, -165.79592575424203, 234.3310697732304), ((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(1117.3565715207112, maneuver.FuelBurned, 3);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T01:16:13.2426029 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T04:59:20.7658396 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:13.2426029 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T01:16:22.7850168 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(9.5424138999999997, maneuver.ThrustWindow.Length.TotalSeconds, 3);
Assert.Equal(new Vector3(-139.4951793647351, 85.72332642451474, 194.88236993709975), ((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(477.12069491886507, maneuver.FuelBurned, 3);

maneuver = maneuver.NextManeuver;

Assert.Equal("2021-03-04T05:23:58.7294586 (TDB)", maneuver.ManeuverWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T05:24:07.2981610 (TDB)", maneuver.ManeuverWindow.EndDate.ToFormattedString());
Assert.Equal("2021-03-04T05:23:58.7294586 (TDB)", maneuver.ThrustWindow.StartDate.ToFormattedString());
Assert.Equal("2021-03-04T05:24:07.2981610 (TDB)", maneuver.ThrustWindow.EndDate.ToFormattedString());
Assert.Equal(8.5687023999999994, maneuver.ThrustWindow.Length.TotalSeconds, 3);
Assert.Equal(new Vector3(134.22795291868337, -81.45016347177679, -183.86968653289438), ((ImpulseManeuver)maneuver).DeltaV);
Assert.Equal(428.43511797710403, maneuver.FuelBurned, 3);

Assert.Equal(scenario.Window, summary.Window);
Assert.Single(summary.SpacecraftSummaries);
var maneuverWindow = summary.SpacecraftSummaries.First().ManeuverWindow;
if (maneuverWindow != null)
{
Assert.Equal(new DateTime(2021, 3, 4, 0, 32, 49, 818, DateTimeKind.Unspecified), maneuverWindow.Value.StartDate);
Assert.Equal(new DateTime(2021, 3, 4, 5, 27, 13, 014, DateTimeKind.Unspecified), maneuverWindow.Value.EndDate);
Assert.Equal(new DateTime(2021, 3, 4, 0, 32, 49, 818, DateTimeKind.Unspecified), maneuverWindow.Value.StartDate, TimeSpan.FromMilliseconds(1));
Assert.Equal(new DateTime(2021, 3, 4, 5, 27, 13, 014, DateTimeKind.Unspecified), maneuverWindow.Value.EndDate, TimeSpan.FromMilliseconds(1));
}

Assert.Equal(2442.5347643136247, summary.SpacecraftSummaries.First().FuelConsumption);
Assert.Equal(2442.5394281907165, summary.SpacecraftSummaries.First().FuelConsumption, 3);
}

[Fact]
Expand Down
18 changes: 9 additions & 9 deletions IO.Astrodynamics.Tests/OrbitalParameters/TLETests.cs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ public void Create()
Assert.Equal(6.1615568022666061, tle.AscendingNode(), 6);
Assert.Equal(5.6003339639830649, tle.ArgumentOfPeriapsis(), 6);
Assert.Equal(0.68479738531249512, tle.MeanAnomaly(), 6);
Assert.Equal(664419082.848, tle.Epoch.SecondsFromJ2000TDB(), 6);
Assert.Equal(664419082.84759104, tle.Epoch.SecondsFromJ2000TDB(), 6);
Assert.Equal(5.06539394194257e-10, tle.BalisticCoefficient, 6);
Assert.Equal(0.0001027, tle.DragTerm, 6);
Assert.Equal(0.0, tle.SecondDerivativeMeanMotion, 6);
Expand All @@ -52,16 +52,16 @@ public void ToStateVector()
DateTime epoch = DateTimeExtension.CreateTDB(664440682.84760022);
var stateVector = tle.AtEpoch(epoch).ToStateVector();

Assert.Equal(stateVector,tle.ToStateVector(epoch));
Assert.Equal(4363671.582661493, stateVector.Position.X);
Assert.Equal(-3627808.882567273, stateVector.Position.Y);
Assert.Equal(-3747413.757453838, stateVector.Position.Z);
Assert.Equal(5805.8219727938695, stateVector.Velocity.X);
Assert.Equal(2575.7244807830643, stateVector.Velocity.Y);
Assert.Equal(4271.59936530876, stateVector.Velocity.Z);
Assert.Equal(stateVector, tle.ToStateVector(epoch));
Assert.Equal(4363669.261337338, stateVector.Position.X, 3);
Assert.Equal(-3627809.912410662, stateVector.Position.Y, 3);
Assert.Equal(-3747415.4653566754, stateVector.Position.Z, 3);
Assert.Equal(5805.8241824895995, stateVector.Velocity.X, 3);
Assert.Equal(2575.722643716163, stateVector.Velocity.Y, 3);
Assert.Equal(4271.5974622410786, stateVector.Velocity.Z, 3);
Assert.Equal("J2000", stateVector.Frame.Name);
Assert.Equal(399, stateVector.Observer.NaifId);
Assert.Equal(664440682.848, stateVector.Epoch.SecondsFromJ2000TDB());
Assert.Equal(664440682.84760022, stateVector.Epoch.SecondsFromJ2000TDB(),3);
}

[Fact]
Expand Down
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