# What is the parallax formula for astronomy? What is the unit of measurement for the formula?

##### 1 Answer

Mar 24, 2016

#### Answer:

Parallax is the apparent angular displacement of a space body due to displacement of the position of the observer. As of now, the unit for this angular measure could be

#### Explanation:

The unit for parallax depends on the precision of the device used for the measurement. The smallness varies. Currently, the accuracy level is up to 0.001 sec =

Parallax is used to approximate distances of space bodies.