If you know a star's stellar class, it's Apparent Magnitude, and how far (in parsecs) the star is from Earth then you have all you need to calculate the inner and outer bounds of a habitable planetary orbit around that star. Here's a simple Excel spreadsheet that does the math for you.

EDIT: I've made some slight changes. Actually, I simply added extra formulas. Now, you can enter the stellar class and the absolute magnitude, if you have that information. Also included output for Orbital Period and Rotational Period.

If you know a star's stellar class, it's Apparent Magnitude, and how far (in parsecs) the star is from Earth then you have all you need to calculate the inner and outer bounds of a habitable planetary orbit around that star. Here's a simple Excel spreadsheet that does the math for you.

EDIT: I've made some slight changes. Actually, I simply added extra formulas. Now, you can enter the stellar class and the absolute magnitude, if you have that information. Also included output for Orbital Period and Rotational Period.

If you know a star's stellar class, it's Apparent Magnitude, and how far (in parsecs) the star is from Earth then you have all you need to calculate the inner and outer bounds of a habitable planetary orbit around that star. Here's a simple Excel spreadsheet that does the math for you.

EDIT: I've made some slight changes. Actually, I simply added extra formulas. Now, you can enter the stellar class and the absolute magnitude, if you have that information. Also included output for Orbital Period and Rotational Period.

If you know a star's stellar class, it's Apparent Magnitude, and how far (in parsecs) the star is from Earth then you have all you need to calculate the inner and outer bounds of a habitable planetary orbit around that star. Here's a simple Excel spreadsheet that does the math for you.

EDIT: I've made some slight changes. Actually, I simply added extra formulas. Now, you can enter the stellar class and the absolute magnitude, if you have that information. Also included output for Orbital Period and Rotational Period.

If you know a star's stellar class, it's Apparent Magnitude, and how far (in parsecs) the star is from Earth then you have all you need to calculate the inner and outer bounds of a habitable planetary orbit around that star. Here's a simple Excel spreadsheet that does the math for you.

EDIT: I've made some slight changes. Actually, I simply added extra formulas. Now, you can enter the stellar class and the absolute magnitude, if you have that information. Also included output for Orbital Period and Rotational Period.