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

Answer 1

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 #1/1000 sec#..

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 = #0.00000028^o#.

Space body distances are approximated using parallax.

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Answer 2

Owen Atkinson

Astronomers use the following formula to calculate parallax: ( d = \frac{1}{\tan(\theta)} ), where ( d ) is the parallax angle and ( \theta ) is the distance to the object. The distance ( d ) in this formula is usually measured in parsecs (pc).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.