planets.hpp File Reference

Functions
bool	jplEphPos (struct jpl_eph_data *jplEph_ptr, MjDateTT mjdTT, E_ThirdBody thirdBody, Vector3d &pos, Vector3d *vel_ptr=nullptr)
bool	planetPosEcef (GTime time, E_ThirdBody thirdBody, VectorEcef &ecef, ERPValues erpv={})
double	sunVisibility (Vector3d &rSat, Vector3d &rSun, Vector3d &rMoon)
	Calculates fraction of Sun's disk visible by spacecraft 0 = full eclipse (umbra) 0 < fraction < 1 = partial eclipse (within penumbra) 1 = no eclipse (outside penumbra)

Enumerations
enum	E_SolarSysStarType {   eMercury = 1 , eVenus = 2 , eEarth = 3 , eMars = 4 ,   eJupiter = 5 , eSaturn = 6 , eUranus = 7 , eNeptune = 8 ,   ePluto = 9 , eMoon = 10 , eSun = 11 , eSolarSysBarycenter = 12 ,   eEarthMoonBaryCenter = 13 , eJplNutation = 14 , eJPLLnrLibration = 15 , eJPLLunarMantle = 16 ,   eJPLTT_TDB = 17 , eSelfDefinedStarType = 99 }
	If nutations are wanted, set ntarg = 14. More...

Enumeration Type Documentation

E_SolarSysStarType

enum E_SolarSysStarType

If nutations are wanted, set ntarg = 14.

For librations, set ntarg = 15. set ncent= 0. For TT-TDB, set ntarg = 17. I've not actually seen an ntarg = 16 case yet.)

Enumerator
eMercury	Mercury.
eVenus	Venus.
eEarth	Earth.
eMars	Mars.
eJupiter	Jupiter.
eSaturn	Saturn.
eUranus	Uranus.
eNeptune	Neptune.
ePluto	Pluto.
eMoon	Moon.
eSun	Sun.
eSolarSysBarycenter	Solar System barycenter.
eEarthMoonBaryCenter	Earth Moon barycenter.
eJplNutation	nutations (longitude and obliq)
eJPLLnrLibration	Lunar Librations.
eJPLLunarMantle	Lunar Mantle omega_x,omega_y,omega_z.
eJPLTT_TDB	TT-TDB, if on eph. file.
eSelfDefinedStarType

Function Documentation

jplEphPos()

bool jplEphPos	(	struct jpl_eph_data *	jplEph_ptr,
		MjDateTT	mjdTT,
		E_ThirdBody	thirdBody,
		Vector3d &	pos,
		Vector3d *	vel_ptr = nullptr )

Parameters

jplEph_ptr	Pointer to jpl binary data
mjdTT	Julian_TT
thirdBody	Star to Calculate the Velocity and Position
pos	Unit: m
vel_ptr	vel (m/s)

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planetPosEcef()

bool planetPosEcef	(	GTime	time,
		E_ThirdBody	thirdBody,
		VectorEcef &	ecef,
		ERPValues	erpv = {} )

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sunVisibility()

double sunVisibility	(	Vector3d &	rSat,
		Vector3d &	rSun,
		Vector3d &	rMoon )

Calculates fraction of Sun's disk visible by spacecraft 0 = full eclipse (umbra) 0 < fraction < 1 = partial eclipse (within penumbra) 1 = no eclipse (outside penumbra)

Parameters

rSat	Satellite position (ECEF)
rSun	Sun position (ECEF)
rMoon	Moon position (ECEF)

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