Some Basic Standards

I am going to be post some interesting and necessary terms that will come in handy in Astronomy. Some probably heard about these terms and units before, but I hope to shed some light onto these mysterious terms and phrases.  These units can be used for reference and for general knowledge, there will be other places on-line that will have these stats and more than likely be in more detail. But they are here for easy reference. They can be found at

http://physics.nist.gov/cuu/Units/ if you wish to look more into them.

 

Velocity of Light = c. 186,282.4 mi/sec

Parsec (this is the parallax of 1 second, or stellar distances) = 3.259 light-years

Light-Year = 5,880,000,000,000 mi

Astronomical Unit (AU) = ca. 93,000,000 mi^-1

Genera precission = 50’,. 26

Oblatness of the Earth = 1/297

Earth to the Moons distance (Mean) = 238,860 mi

Gravity of Earth (g) = 9.80665 m/s² (32.1737 ft/s²)

Speed of the Earth moving = 69,360.73 Mp/H

Distance of Earth to the Sun = 1 AU (1 Astronomical unit / ca. 93,000,000 mi^-1)