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JplDE Class

The common base for classes for loading and accessing JPL DE files.
Inheritance Hierarchy

Namespace:  AGI.Foundation.Celestial
Assembly:  AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 19.5.402.0 (19.5.402.0)
Syntax
public abstract class JplDE : DefinitionalObject

The JplDE type exposes the following members.

Constructors
  NameDescription
Protected methodJplDE(String)
Initializes an instance using the specified JPL DE filename.
Protected methodJplDE(JplDEFile)
Initializes an instance using the specified JplDEFile instance.
Protected methodJplDE(StreamFactory)
Initializes a new instance with the specified stream factory.
Protected methodJplDE(JplDE, CopyContext)
Initializes a new instance as a copy of an existing instance.
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Properties
  NameDescription
Public propertyEarthMoonMassRatio
Gets the ratio of the mass of the earth to the mass of the moon.
Public propertyFile
Gets the raw JPL DE file represented by this instance.
Public propertyFinalEpoch
Gets the last epoch for which ephemeris data is available.
Public propertyInitialEpoch
Gets the first epoch for which ephemeris data is available.
Public propertyIsFrozen
Gets a value indicating whether this object is frozen. A frozen object cannot be modified and an ObjectFrozenException will be thrown if an attempt is made to do so.
(Inherited from DefinitionalObject.)
Public propertyKilometersPerAstronomicalUnit
Gets the number of kilometers (km) in one astronomical unit (AU).
Public propertyLunarEphemerisNumber
Gets the number indicating the source of the data. For example, '405' indicates the DE405 ephemerides.
Public propertyPlanetaryEphemerisNumber
Gets the number indicating the source of the data. For example, '405' indicates the DE405 ephemerides.
Public propertySpeedOfLight
Gets the speed of light in km/s.
Public propertyTitles
Gets the collection of titles.
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Methods
  NameDescription
Protected methodCheckForSameDefinition(DefinitionalObject)
Checks to determine if another instance has the same definition as this instance and returns if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IsSameDefinition(Object).
(Overrides DefinitionalObjectCheckForSameDefinition(DefinitionalObject).)
Protected methodCheckForSameDefinition(JplDE)
Checks to determine if another instance has the same definition as this instance and returns if it does. Derived classes MUST override this method and check all new fields introduced by the derived class for definitional equivalence. It is NOT necessary to check base class fields because the base class will already have done that. When overriding this method, you should NOT call the base implementation because it will return for all derived-class instances. Derived classes should check the type of other to preserve the symmetric nature of IsSameDefinition(Object).
Public methodClone
Clones this object using the specified context.
(Inherited from DefinitionalObject.)
Protected methodComputeCurrentDefinitionHashCode
Computes a hash code based on the current properties of this object. Derived classes MUST override this method and compute a hash code that combines: a unique hash code seed, the base implementation result, and the hash codes of all new fields introduced by the derived class which are used in the CheckForSameDefinition(DefinitionalObject) method.
(Overrides DefinitionalObjectComputeCurrentDefinitionHashCode.)
Public methodEnumerateDependencies
Enumerates the dependencies of this object by calling EnumerateT(T) for each object that this object directly depends upon. Derived classes which contain additional dependencies MUST override this method, call the base implementation, and enumerate dependencies introduced by the derived class.
(Overrides DefinitionalObjectEnumerateDependencies(DependencyEnumerator).)
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodFreeze
Freezes this object. Further attempts to modify it will result in an ObjectFrozenException.
(Inherited from DefinitionalObject.)
Protected methodFreezeAggregatedObjects
Called by Freeze to also freeze any objects that are considered to be a part of this object. Derived classes which contain additional aggregated objects MUST override this method, call the base implementation, and freeze aggregated objects introduced by the derived class. The objects that need to be frozen in this method are frequently created in this object's constructor and are not settable via properties.
(Overrides DefinitionalObjectFreezeAggregatedObjects.)
Public methodGetCenterOfMassPoint
Gets a point which represents the center of mass of the given JplDECentralBody.
Public methodGetDefinitionHashCode
Gets a hash code representing the definition of this object.
(Inherited from DefinitionalObject.)
Public methodGetEarthNutationModel
Creates a NutationModel which uses this JPL DE data for the nutation of the Earth.
Public methodGetGravitationalParameter
Gets the gravitational parameter of a central body in SI units (m^3/s^2).
Public methodGetGravitationalParameterNative
Gets the gravitational parameter of a central body in AU^3/day^2.
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodIsSameDefinition
Determines if this object has the same definition as another object.
(Inherited from DefinitionalObject.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Protected methodThrowIfFrozen
Throws ObjectFrozenException if this object IsFrozen. This method should be called from any method or property that modifies this object.
(Inherited from DefinitionalObject.)
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Public methodCode exampleUseForCentralBodyPositions
Uses this JPLDE data for the positions of the centers of mass of the central bodies in the specified CentralBodiesFacet instance.
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Remarks
JPL Planetary Ephemeris files can be downloaded from ftp://ftp.agi.com/pub/STKData/Astro/PlanetEphem/lendian/.
See Also