Enter the stellar parallax and the apparent magnitude into the Calculator. The calculator will evaluate the Absolute Magnitude.

## Absolute Magnitude Formula

The following two example problems outline the steps and information needed to calculate the Absolute Magnitude.

M = m + 5*(log(p) + 1)

Variables:

- M is the Absolute Magnitude ( )
- m is the apparent magnitude
- p is the stellar parallax

## How to Calculate Absolute Magnitude?

The following steps outline how to calculate the Absolute Magnitude.

- First, determine the stellar parallax.
- Next, determine the apparent magnitude.
- Next, gather the formula from above = M = m + 5*(log(p) + 1).
- Finally, calculate the Absolute Magnitude.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

stellar parallax = 30

apparent magnitude = 4

M = m + 5*(log(p) + 1)** **= ?