Astronomical Algorithms All-sky disk · zenith at centre · animate time with Play

Sky disk Heliocentric Ecliptic Natal chart

Thesaurus

Full index
Foundations
Astronomical Algorithms
Time Systems
Julian Day
Dynamic Time (ΔT)
Sidereal Time
Orbits & Mechanics
Orbit
Perihelion
Aphelion
Coordinate Systems
Right Ascension
Declination
Equatorial Coordinates
Celestial Sphere & Frames
Precession
Ecliptic
Vernal Equinox
Observation & Phenomena
Conjunction
Opposition
Semidiameter

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Heliocentric view — sober preview

Constellation

Lines Names Stars

Bodies

Orbits Planet names

Orbit marks

Major axis Perihelion Aphelion Asc. node Desc. node Nodes axis

Reference

Ecliptic plane Equinox axis Earth–Sun axis

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