Topocentric Configuration of Major Solar System Bodies
This data service provides tables of the topocentric configuration of solar system bodies.
Ecliptic coordinate system
The system''s origin can be the center of either the Sun or Earth, its primary direction is towards the March equinox, and it has a right-hand convention. It may be implemented in spherical or rectangular
NOAA Solar Position Calculator
Time of day for the calculation can be changed in the same way. Hit the "Calculate Solar Position" button. Once the calculations are complete, you may use your browser''s "Print" function to obtain a
The Horizontal Coordinate System
The horizontal coordinate system, also known as the Alt/Az system, is a method for describing the exact position of objects in the sky, such as planets, the Sun, or the Moon.
PHY 445/515: Coordinate Systems
Ecliptic Coordinates The ecliptic coordinate system is based on the apparent Solar orbit, and is the natural system for Solar System studies. The equator (the ecliptic) is the plane of the terrestrial orbit,
Celestial coordinates and a quick overview of the Milky Way
The system is oriented by the spin axis of the Earth, and has special points at the North and South Poles. We use lines of latitude and longitude to demarcate the surface.
Chapter 2: Reference Systems
The Earth rotates on its axis relative to the Sun every 24.0 hours mean solar time, with an inclination of 23.45 degrees from the plane of its orbit around the Sun. Mean solar time represents an
Solar coordinate systems
The Carrington heliographic coordinate system, established by Richard C. Carrington in 1863, rotates with the Sun at a fixed rate based on the observed rotation of low-latitude sunspots.
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For example, central Oklahoma falls between the 8 degree E and the 10 degree E lines. This means that the north point of a compass points about 9 degrees E of true north.
Coordinate systems used in astronomy | Astronomy and
The ecliptic system aligns with the Earth''s orbital plane, and the galactic system is oriented toward the center of the Milky Way. These systems also account for the effects of precession, which causes the