Stellar Lifetime
Calculator

Inputs

Main-sequence lifetime (Gyr)
10

Results

Main-sequence lifetime (Gyr)
10
Main-sequence lifetime (Myr)
10,000
Ratio to the Sun's lifetime
1

Astronomy results

Main-sequence lifetime (Gyr)10
Main-sequence lifetime (Myr)10,000
Ratio to the Sun's lifetime1

formula-map diagram

Main-sequence lifetime (Gyr)
10
Main-sequence lifetime (Myr)
10,000
Ratio to the Sun's lifetime
1

Astronomical relationship

Formula

t ≈ 10 Gyr × (M / M_sun)^-2.5

= 10

Note

This result is a simplified model: it applies the displayed textbook formula to the values you entered, assuming ideal spherical bodies, circular orbits, blackbody radiation and perfect optics, and ignoring atmospheric seeing, relativistic corrections beyond those stated, cosmological models and measurement uncertainty. Use published ephemerides and catalogue data for real observations.

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