Paralaxe → Distância
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
d = 1/p
About this calculator
The Paralaxe → Distância calculator is an online tool that helps calculate the distance of a star in parsecs (pc) based on its parallax in arcseconds (arcsec).
The formula used for this conversion is quite simple: d = 1/p, where d is the distance in parsecs and p is the parallax in arcseconds. This means that the smaller the parallax, the greater the distance of the star.
This calculator is useful in astrophysics, as parallax is one of the main ways to measure the distance of nearby stars. From the distance, we can calculate other properties of the star, such as its intrinsic luminosity.
It is important to be careful when using this calculator, as the accuracy of the parallax measurement is crucial to obtaining reliable results. Additionally, it is necessary to consider that parallax is a measure of angle, so the accuracy of the measurement can vary depending on the equipment and method used.
Frequently asked questions
What is parallax?
Parallax is the measure of the angle of view of a star relative to the background of distant stars, caused by the Earth's motion around the Sun.
Why is parallax important?
Parallax is important because it is one of the main ways to measure the distance of nearby stars, which is crucial to understanding the structure and evolution of the universe.
What are the limitations of the calculator?
The calculator assumes that the parallax is measured accurately and that the star is relatively close. For more distant stars, other methods of distance measurement are required.
How can I use the calculator?
Simply enter the value of the parallax in arcseconds and the calculator will provide the distance in parsecs.
What is the unit of measurement of distance?
The unit of measurement of distance is the parsec (pc), which is an astronomical unit of distance equivalent to approximately 3.26 light-years.