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IO.Astrodynamics.Net

Presentation

IO.Astrodynamics.Net is a .Net astrodynamics framework based on IO.Astrodynamics native library.

It allows .Net developers to call IO.Astrodynamics high level features :

• Load JPL Spice kernels
• Compute and convert orbital parameters
  • State vector
  • Two lines elements
  • Equinoctial
  • Keplerian elements
• Compute and convert coordinates system
  • Equatorial
  • Horizontal
  • Geodetic
• Frame transformation
  • ICRF
  • Ecliptic
  • Body fixed frames
  • ITRF93 (High accuracy earth fixed frame)
• Configure spacecraft
  • Clock
  • Fuel tank
  • Engines
  • Instrument
• Spacecraft propagator
  • Impulsive maneuvers
  • Fuel balance
• Impulse maneuvers :
  • Apogee height
  • Perigee height
  • Plane alignment
  • Combined maneuver
  • Apsidal alignment
  • Phasing
• Attitudes
  • Instrument pointing toward an object
  • Nadir
  • Zenith
  • Prograde
  • Retrograde
  • Zenith
• Surface site on any celestial body
• Evaluate launch opportunities
• Use or convert different time referential (TDB, UTC, Local)
• Get celestial body information based on Naif kernels
• Find time windows based on distance constraints from spacecraft, celestial body or ground site
• Find time windows based on occultation constraints from spacecraft, celestial body or ground site
• Find time windows based on coordinate constraints from spacecraft, celestial body or ground site
• Find time windows based on illumination constraints from ground site.
• Find time windows when an object is in instrument field of view.
• Manipulate kernel files
• Math tools
  • Vector
  • Matrix
  • Quaternion
  • Lagrange interpolation

Installation

This package is hosted by Nuget here. You can install it in your project with this command :

dotnet add package IO.Astrodynamics

Quick start

//LET'S GO !
//In this example we'll get the moon state vector in ICRF frame relative to the earth without aberration

//Load required kernels for computation
API.Instance.LoadKernels(new DirectoryInfo("/home/spacer/Sources/SDK.Net/IO.Astrodynamics.Tests/Data/SolarSystem"));

//Create moon object
var moon = new CelestialBody(PlanetsAndMoons.MOON.NaifId);

//Get moon ephemeris
var ephemeris = moon.GetEphemeris(DateTimeExtension.J2000, moon.InitialOrbitalParameters.CenterOfMotion, Frame.ICRF, Aberration.None).ToStateVector();

//Display some informations
Console.WriteLine($"Position : {ephemeris.Position.ToString()}");
Console.WriteLine($"Velocity : {ephemeris.Velocity.ToString()}");

//You should have the following result : 
// Position : Vector3 { X = -291608384.6334355, Y = -266716833.39423338, Z = -76102487.09990202 }
// Velocity : Vector3 { X = 643.5313877190328, Y = -666.0876840916304, Z = -301.32570498227307 }

You can find more advanced examples here