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Astrosyo
A guide for the stars.
Interactive calculators, simulations, and visualizations for astronomy and astrophysics.
A
Angular Size & Physical Size Calculator
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Angular Velocity Calculator
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Astronomical Distance Converter
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B
Binary Mass Function Calculator
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Black Hole Evaporation Time Calculator
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Black Hole ISCO Calculator
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Blackbody Spectrum Generator
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C
Cosmological Lookback Time Calculator
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D
Distance Modulus Calculator
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Doppler Shift & Radial Velocity Calculator
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Drake Equation Calculator
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E
Earth
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Earth and Moon Size Comparison
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Earth and Neptune Size Comparison
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Eddington Luminosity & Eddington Ratio Calculator
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Escape Velocity Calculator
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Exoplanet Equilibrium Temperature Calculator
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Exoplanet Transit Depth Calculator
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Exoplanet Transit Probability Calculator
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F
Flux, Luminosity & Distance Calculator
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Free-Fall Time Calculator
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G
Gravitational Redshift Calculator
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Gravitational Wave Chirp Mass Calculator
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H
Habitable Zone Boundary Calculator
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Hawking Temperature Calculator
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Hill Sphere Calculator
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How Diffusion Models Work
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Hubble Law Calculator
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J
Jupiter
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Jupiter and Earth Size Comparison
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Jupiter and Neptune Size Comparison
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Jupiter and Saturn Size Comparison
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Jupiter and Venus Size Comparison
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K
Kepler's Third Law Calculator
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L
Lunar Phases
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M
Magnitude & Brightness Calculator
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Main-Sequence Lifetime Estimator
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Mars
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Mars and Earth Size Comparison
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Mars and Mercury Size Comparison
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Mercury
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Mercury and Jupiter Size Comparison
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N
Neptune
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P
P-Type Star System Simulation
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Parallax Distance Calculator
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Perge
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Photon Energy & Wavelength Calculator
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Pluto
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Proper Motion & Tangential Velocity Calculator
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Q
Quantum Particle Simulator
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R
Redshift ↔ Observed Wavelength Calculator
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Roche Limit Calculator
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S
S-Type Star System
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Saturn
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Saturn and Neptune Size Comparison
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Saturn and Uranus Size Comparison
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Schwarzschild Radius Calculator
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Single-Planet Star System
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Solar System Planet Tour
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Solar System Planets in a Row
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Solar System Planets In Order
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Spectral Index Calculator
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Stellar Mass–Luminosity Relation Calculator
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Stellar Surface Gravity / log g Calculator
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T
Telescope Angular Resolution Calculator
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Telescope Magnification & Eyepiece Calculator
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The Moon
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Tidal Disruption Radius Calculator
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Top-Down Solar System Simulation
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Triple Star Systems
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True Field of View Calculator
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U
Uranus
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V
Venus
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X
X-ray Hardness Ratio Calculator
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