SCORECARDS

Object/System Mass Radius Density td
solar masses pc cm gm cm-3 yrs seconds
Universe 1023 5 x 109 1028 10-29 1.5 x 1010 5 x 1017
Galaxy 3 x 1011 104 3 x 1022 5 x 10-24 3 x 107 1015
Star Cluster 106 3 1019 3 x 10-19 105 3 x 1012
Solar System 1 2 x 10-4 6 x 1014 2 x 10-12 40 109


Object/System Mass Radius Density td
solar masses cm gm cm-3 seconds
Sun 1 7 x 1010 1.5 2 x 103
White Dwarf 1 4 x 108 1 x 107 1.3
Neutron Star 1 106 5 x 1014 10-4


Equations of State
P = Krg
n g = 1 + 1/n Relevant to:
0 incompressible fluids (H2O)
0.5 3 neutron stars
1 2
1.5 5/3 protostars,
normal stars, and
white dwarfs
2.5 7/5
3 4/3 massive white dwarfs
1 isothermal gas