Sidereal Day

Functions
template<typename T >
T	EGXPhys::SiderealDay (const T orbitalPeriodIns, const T synodicDayIns)
	Calculates the sidereal day, \(T_{Sidereal}\), of a celestial object in seconds from the length of the celestial object's orbital period, \(T_{Orbit}\), and synodic day (solar day), \(T_{Solar}\). A sidereal day is the time it takes for a full 360 degree rotation resulting in a distant star appears in the same position in the sky overhead. \[ T_{Sidereal}=\dfrac{T_{Orbit} * T_{Synodic}}{T_{Orbit} + T_{Synodic}}\] . More...

Detailed Description

Function Documentation

SiderealDay()

template<typename T >

T EGXPhys::SiderealDay	(	const T	orbitalPeriodIns,
		const T	synodicDayIns
	)

Calculates the sidereal day, \(T_{Sidereal}\), of a celestial object in seconds from the length of the celestial object's orbital period, \(T_{Orbit}\), and synodic day (solar day), \(T_{Solar}\). A sidereal day is the time it takes for a full 360 degree rotation resulting in a distant star appears in the same position in the sky overhead.

\[ T_{Sidereal}=\dfrac{T_{Orbit} * T_{Synodic}}{T_{Orbit} + T_{Synodic}}\]

.

See http://www.celestialnorth.org/FAQtoids/dazed_about_days_(solar_and_sidereal).htm and http://astronomy.swin.edu.au/cosmos/S/Sidereal+Day

Parameters

orbitalPeriodIns	\( T_{Orbit}\ (s)\) Orbital period of the celestial object in seconds.
synodicDayIns	\( T_{Synodic}\ (s)\) Synodic day (solar day) of the celestial object in seconds.

Returns

\( T_{Sidereal}\ (s)\) Sidereal day of the celestial object in seconds. Negative number indicates the planet has retrograde rotation.

See also

OrbitalPeriod() for period it takes for a celestial body to complete one orbit around another object.

SolarDay() for period it takes for a celestial body to rotate once in relation to the body it is orbiting.

SynodicDay() for period it takes for a celestial body to rotate once in relation to the body it is orbiting.