program 30, output 3=absolute magnitue 1 wae astronomers gage star enerjee output

first get apparent magnitude (output 1) then, get distans (output 2)

Astronomers define absolute magnitude=its aparent magnitude if at distans=10 parseks. Parsek is nuther straenj thang em invent=distans weer the "parallax"=1 ark sekond. 1 parsek=3.085677* 10^16 meters=3.26116333 lite-yeers. Zampel...neerest star=Alfa Centauri: apparent mag=-0.27. distans=4.3650 lite yeers=1.3385 parsek=0.13385*(10 parsek). Energy density drop as square av distans. So square 0.13385=0.0179153. Alfa Senturi is less than 10 parseks awae, so its enerjee output is less than the standard star at standard distans bi fakter=1/0.0179153. distans fakter=55.8182. take log tu base 10 av 55.8182...=1.746776 Adjust magnitude bi 2.51*1.746776=4.367 add 4.367 tu apparent magnitude (=-0.27 for Alfa Senturi). Result=+4.1=the absolute magnitue in astronomer speek. Weer did that 2.51 kum from? 5 mags=100 times as brite. So 1 mag is 100^(1/5)=100^ 0.2=2.5118864. Distans tu stars is not very akkurut, so 3 digits is plenty. absolute mag is kin tu LUNINOSITY=total power a radiater put out. Sum folks prefer tu kompare tu sun radiate=3.839*10^26 watts. Sun absolute mag=4.8. Thus sun output is mag zero/2.51188^4.8 Thus, mag 0 star radiate 83.176 times the power the sun send out. waet...browser reed skript stuff

output 1 apparent magnitude	output 2 calculate distans tu star	output 4 moon faze, full moon	output 5 full moons in 1 yeer	output 6 blue moons	output 7 Eester
HOME...calculate money numbers		program 1 bi or rent
program 3 calculate paement	program 29 calculate area	program 31 rule av 78

                  brite stars
name         apparent    distans     absolute
             magnitude  lite yeers  magnitude
Sirius         -1.46       8.6          1.43
Canopus        -0.72      74           -2.5
Alfa Centauri  -0.27       4.36          4.1
Arcturus       -0.04      34             0.2
Vega            0.03      25             0.59
Capella         0.08      41             0.4
Rigel           0.12    1400            -8.1
Procyon         0.38      11.4           2.6
Achernar        0.46      69            -1.3
Betelguse       0.50    1400            -7.2
Beta Centauri   0.61     320            -4.4
Acrux           0.76     510            -4.6
Altaer          0.77      16             2.3
Aldebaran       0.85      60            -0.3
Antares         0.96     520            -5.2
Spica           0.98     220            -3.2
Pollux          1.14      40             0.7
Formalhaut      1.16      22             2.0
Beta Cru        1.25     460            -4.7
Deneb           1.25    1500            -7.2
Regulus         1.35      69            -0.3
Adhara          1.50     570            -4.8
Caster          1.57      49             0.5
gamma Cru       1.63     120            -1.2
Shaula          1.63     330            -3.5
--------------
Sun            -26.73      0.000015812   4.8
full moon      -12.6
krab supernova  -6.73
Max Venus       -4.7
Max Mars        -3.0
Max Jupiter     -2.6
--------------
lite yu kan just barely see wen sun is up...-3.9
Sun-moon: 26.73-12.6=14.13 magnitude differ
14.13/5=2.826
100^2.826=448,745.  Thus sun is 450,000 times as brite as full moon.

riddel
now=	dae av yeer	daes left in yeer