scienceDistance between earth and sun = 108 x sun-diameter
sun diameter:
-1,392,000 km ('Sun' Columbia Electronic Encyclopedia. 6th ed. Columbia University Press, 2003)
- 1,400,000 km (Namowitz, Samuel N. and Spaulding, Nancy E. Earth Science. Evanston, IL: McDougal Littell Company, 1999)
- 1,390,000 km (The Amazing Structure of the Sun. National Aeronautics and Space Administration (NASA), 2003)
- 1,380,000 km (Namowitz, Samuel N., and Nancy E. Spaulding. Heath Earth Science. Lexington, MA: Heath, 1994: 398.)
The distance between the earth and the Sun is called an Astrological Unit (AU).
1 AU = 149,597,870.691 kilometers
Even though this is the number given there are multiple places where variability gets into the numbers. One way is the elliptical orbit of the earth around the Sun.
Perihelion: 147.5 million km, about January 4th
Aphelion 152.6 million km, about July 4th (http://science.nasa.gov/headlines/y2001/ast04jan_1.htm)
Taking the mean distance between the earth and the Sun ( 149,597,870.691 km) and dividing it by the most commonly used diameter of the Sun (1,392,000 km) =
107.46973469181034482758620689655. which is 1% within 108
108 also turns up with calculating the other distances and circumferences too
(sun diameter:
-1,392,000 km ('Sun' Columbia Electronic Encyclopedia. 6th ed. Columbia University Press, 2003)
- 1,400,000 km (Namowitz, Samuel N. and Spaulding, Nancy E. Earth Science. Evanston, IL: McDougal Littell Company, 1999)
- 1,390,000 km (The Amazing Structure of the Sun. National Aeronautics and Space Administration (NASA), 2003)
- 1,380,000 km (Namowitz, Samuel N., and Nancy E. Spaulding. Heath Earth Science. Lexington, MA: Heath, 1994: 398.)
The distance between the earth and the Sun is called an Astrological Unit (AU).
1 AU = 149,597,870.691 kilometers
Even though this is the number given there are multiple places where variability gets into the numbers. One way is the elliptical orbit of the earth around the Sun.
Perihelion: 147.5 million km, about January 4th
Aphelion 152.6 million km, about July 4th (http://science.nasa.gov/headlines/y2001/ast04jan_1.htm)
Taking the mean distance between the earth and the Sun ( 149,597,870.691 km) and dividing it by the most commonly used diameter of the Sun (1,392,000 km) =
107.46973469181034482758620689655. which is 1% within 108
108 also turns up with calculating the other distances and circumferences too
Clay hopes this bit is long enough to promote my websi,
Wed 20 Jul 2011, 14:12,
archived)
