Bintang

Umur bintang pada deret utama (dalam Milyar tahun): Ams = Amso.(Mo^x)/M
Jika M/Mo < 0,7 maka x = 1-4,75
yang lain x = 1-3,75. M/Mo - 2,2125
Jari2 bintang: R = Ro . (L^0,233)/Lo
Gravitasi permukaan: g = G.M/R^2
Laju lepas : Vs = sqr ( 2.R/g)
Luminositas : L = Lo . 10. (mv-Mv)/2,5
Magnitudo mutlak : Mv = mv + 5 - 5. log (D.mv/parsec)
Magnitudo tampak : mv = input
Suhu permukaan : T = To + L/(4.Pi.sigma.r^2)
Jarak ekosfer (AU): x = xo.sqr (L/(1,102.Lo)) < x < xo. sqr(L/(0,53.Lo))

Planet
Tahun: y = 2.Pi. sqr ((x^3)/(G.M))
Laju lepas tata bintang : Vs = sqr (2.G.M/x)
Diameter anguler bintang : As = 2.R/x
Diameter anguler bulan : Am = 360. rm/(Xm.Pi)
Hari solar: Ds = 1/((1/D)-(1/y))
Massa molekul relatif minimum : Rmm = 10. 3. R. 1273 / (V^2)
Laju suara di permukaan : v = sqr (R.T/(Rmm.(Cp-R)))
Jangkauan suhu orbit: T = sqr (Q/(x.(1+l)^2)
Q = L.(1-A)/(16.Pi.sigma)

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License