?

Log in

No account? Create an account

Previous Entry | Next Entry

I knew I loved being called MLR

MLR - MadLadyRed

Units of measurement
Although stellar parameters can be expressed in SI units or CGS units, it is often most convenient to express mass, luminosity, and radii in solar units, based on the characteristics of the Sun:

solar mass: M☉ = 1.9891 × 1030 kg[53]
solar luminosity: L⊙ = 3.827 × 1026 W[53]
solar radius R⊙ = 6.960 × 108 m[54]
Large lengths, such as the radius of a giant star or the semi-major axis of a binary star system, are often expressed in terms of the astronomical unit —approximately equal to the mean distance between the Earth and the Sun (150 million km or 93 million miles).

Latest Month

August 2018
S M T W T F S
   1234
567891011
12131415161718
19202122232425
262728293031 

Tags

Powered by LiveJournal.com
Designed by Taichi Kaminogoya