Celestial Object Angular Size Calculator
Calculate the angular size an object appears in the sky.
km
km
Result
0,517805°
Angular size: 0,517805°
Result in all units
Step-by-step solution
θ = D / d
What Is Angular Size?
Angular size is the angle a celestial object spans in the sky. It depends on the object's actual size and its distance.
How is it calculated?
How Is It Calculated?
angular size ≈ actual size ÷ distance (radians)
- Enter the actual size and the distance.
- The result is converted to degrees or arcminutes.
Frequently Asked Questions
Why do the Moon and the Sun appear the same size?
The Sun is much larger but also much farther away, so their angular sizes in the sky are nearly equal.