MandysNotes

Friday, 14 March 2014 01:41

Table of Distances

By  Gideon
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Below is a table of various distances in various units that are important in astronomy and astrophysics. 

AstroDistanceChart800

Key:  

CeresRadius

 

= the radius of Ceres, the largest asteroid in the asteroid belt between Mars and Jupiter.

MoonRadius

 

  = the radius of the Moon.

EarthRadius

 

  = the radius of the Earth.

JupiterRadius

 

 = the radius of Jupiter.

Light Second is the distance light travels in one second.

Earth-Moon is the mean distance between the Earth and the Moon.

SunRadius

 

 = the radius of the Sun. 

AU is an astronomical unit, the mean distance between the Earth and the sun (defined to be exactly 1.49597870700 \( \times 10^{13} cm\)).

Jupiter-Sun is the mean distance between the sun and Jupiter. 

\({\bf iR_{KB}}\) is (approximately) the inner radius of the Kuiper Belt

Light Year is the distance light travels in one year. 

\({\bf oR_{OC}}\) is (approximately) the outer radius of the Oort Cloud

\({\bf D_{\alpha}}\) is (approximately) the distance from our sun to the star Alpha Centauri. 

Parsec is the distance of an object from our sun that generates a parallax of one second of arc. 

\({\bf D_{EMW}}\) is roughly the distance from our sun to the center of the Milky Way Galaxy. 

\({\bf R_{MW}}\) is roughly the radius of the Milky Way Galaxy.

\({\bf R_{OU}}\) is roughly the radius of the observable universe. 

 

 

 

 

 

Read 1875 times Last modified on Sunday, 16 March 2014 00:30
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