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Luminosity Formula for Apparent Magnitude

Luminosity is the total amount of energy emitted by a star, galaxy or other astronomical object per unit time. The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

The luminosity equals the product of the nominal solar luminosity, distance squared divided by 0.0813 light years squared and 10 to the power minus 0.4 times apparent magnitude.

Formula

QuantityVariable["L", "Luminosity"] == (Quantity[0.0813, "NominalSolarLuminosity"/"LightYears"^2]*QuantityVariable["d", "Distance"]^2)/10^(0.4*QuantityVariable["m", "Unitless"])

symbol description physical quantity
L luminosity "Luminosity"
m apparent magnitude "Unitless"
d distance "Distance"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Luminosity Formula for Apparent Magnitude"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ ResourceObject["Luminosity Formula for Apparent Magnitude"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Luminosity Formula for Apparent Magnitude"], {QuantityVariable[ "d","Distance"] -> Quantity[10, "Parsecs"], QuantityVariable["m","Unitless"] -> -26.72`}]
Out[3]=

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