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# Astro Distances

vCalc.Astro Distances

This **Astronomical Distance** computes the distances from the Earth to the selected astronomical objects. For objects in our solar system, it assumes the shortest distances when the object are at the closest parts of their orbits.

**INSTRUCTIONS:**

- Click on the
**Earth to**pull-down menu above and choose an astronomical body.

**Distance:** The calculator returns the distance to the object. The pull-down menu for the results can automatically convert the answer to a large list of distance units including miles, nautical miles, kilometers, astronomical units (ua), light seconds, light minutes light years, parsecs, megaparsecs and kilolight-years.

**Related Astro Calculators:**

- Kepler's 3
^{rd}Law Calc has Kepler's 3^{rd}law solved for each parameter. - Astronomy Calculator contains basic formulas for a college level Introduction to Astronomy
- Exoplanet Calculator contains formulas for studying planets outside of our Solar System.
- Astronomical Distance Calculator provides the distance from the Earth to numerous astronomical bodies (e.g. Sun, Moon, planets, stars, Milky Way's Center and Edge, Andromeda Galaxy)
- Astronomical Distance Travel Time Calculator computes the time to travel to distant parts of space at different velocities.

# Description

The Astro Distance equation calculates the shortest distance between the Earth and celestial bodies. The shortest distance for planetary objects is calculated as the difference between the planet's distance from the Sun and the Earth's distance from the Sun. This implies that the returned distance is the linear distance between the Earth and the planet when they are in-line with and on the same side of the Sun.

# See Also

- Astronomical Unit - The definition and value of an Astronomical Unit.
- Astro Travel Time - The time it takes to go between celestial objects at different speeds.

**Astro Distances**, references 17 equations/constants.

**Equations and Constants **

- Alpha Centauri (Proxima) - Distance
- Andromeda Galaxy - Distance
- c (speed of light) with units m/s
- Jupiter - distance from the Sun
- Mars - distance from the Sun
- Mercury - distance from the sun
- Moon - distance from earth
- Neptune - distance from the Sun
- Pluto - distance from the Sun
- Saturn - distance from the Sun
- Sirius - Distance
- Uranus - distance from the Sun
- Venus - distance from the Sun
- Barnard's Star - Distance
- Milky Way Diameter (upper estimate)
- Speed of Sound (mi/hr)
- Wolf 1061c - Distance to Earth
- more...

**Astro Distances**, is used in 2 calculators and 1 equation/constant.

**Calculators**

**Equations and Constants **