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A Class F star is the fourth-brightest type of main sequence star. They are typically colored white or yellow-white. They make up roughly 3% of main-sequence stars.

A typical Class F star has a mass of 1.2 (1.04 to 1.4) solar masses, a radius of 1.3 (1.15 to 1.4) solar radii, a luminosity of 3 (1.5 to 5) solar luminosities, a surface temperature of 6,750 K (6,000 K to 7,500 K), and a lifespan of 5 billion years.

While these stars have lifespans a bit shorter than the Sun, they are likely candidates for planets and life with habitable zones around 2 AU away, though perhaps they might become too bright and hot later in their lives for intelligent life to develop.

These types live for 1,000,000,000 years on average.


Stellar Classes
Φ · Ψ · Ω · Q · DE · GR · σ ς · Θ · N · D · BS · Y · T · L · M · C · S · QS · K · G · F · A · B · LBV · β · O · W · N · X · n0 · Exotic (Π · Σ · Γ · Δ · μ) · δ · I · TŻO · BL · ·

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