stellar library

Functions

absoluteByDistance(double m, double d) → double

Absolute magnitude from apparent magnitude and distance in parsecs.

absoluteByParallax(double m, double parallax) → double

Absolute magnitude from apparent magnitude and annual parallax (radians).

difference(double ratio) → double

Magnitude difference from brightness ratio.

ratio(double m1, double m2) → double

Brightness ratio of two stars.

sum(double m1, double m2) → double

Combined apparent magnitude of two stars.

sumN(List<double> magnitudes) → double

Combined apparent magnitude of multiple stars.