`"Distance" = "Distance to:" "Sun"`

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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.

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.

• WYSIWYG

Astronomy Calculators

• 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.
• Kepler's 3^rd Law formula T² = (4? • R³)/(G • M)
  • (M) - mass of the system. 
  • (T) - period of the orbit.
  • (R) - separation distance between the two objects.
  • (G) - universal gravity constant
• Small Angle Formula
  • (?) - angle
  • (D) - distance to astronomical object
  • (S) - size or diameter of astronomical object
• Flux and Magnitude formulas
  • Change in Magnitude from Flux Ratio
  • Flux Ratio from Magnitudes
• Telescope formulas
  • Resolving Power of a Telescope
  • Magnification of a Telescope
• Mass formulas
  • Mass from Luminosity
  • Mass from Acceleration and Radius
  • Mass from Speed and Separation
  • Mass of extra-solar planet from mass of star, radius of star orbit and radius of exoplanet orbit
  • Mass of extra-solar planet from mass and velocity of star and velocity of planet
• Relative Size Formulas
  • Relative Size from Relative Temperature and Luminosity
  • Relative Temperature from Relative Size and Luminosity
  • Relative Luminosity from Relative Temperature and Size
• Wavelength Formulas
  • Velocity from shift in Wavelength and Unshifted Wavelength
  • Wavelength Shift from Wavelength and Speed
  • Blackbody Wavelength from Temperature
  • Blackbody Temperature from Peak Wavelength
  • Photon Energy from Wavelength
  • Photon Wavelength from Energy
• Luminosity and other Formulas
  • Distance from absolute and apparent magnitude
  • Radius from Speed and Period
  • Speed of Circular Motion
  • Hubble Time
  • Luminosity from Mass

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.
• Ellipse Calculator
• 3D Vector Calculator:
• Drake Equation Calculator
• Seager Equation Calculator
• Friedman Equation Calculator