Y.PNG

A Class Y star is the dimmest type of star, classed as a sub-brown dwarf or planetary-mass brown dwarf that may not be large enough to undergo deuterium fusion[1]. A typical Class Y star has a temperature of around -63 - 800 F(220 - 700 K), a mass of around 5-13 times that of Jupiter(although this is a bit vague), and a similar radius to Jupiter under most circumstances.[2] They are often classified as large rogue planets.

Examples

  • WISE 0855−0714, the coldest known brown dwarf[3][4]
  • These are the 7 Y-type stars discovered by J. Davy Kirkpatrick et al. in 2012:[5]
    • WISE 0146+4234
    • WISE 0350−5658
    • WISE 0359−5401
    • WISE 0535−7500
    • WISE 0713−2917
    • WISE 0734−7157
    • WISE 2220−3628

See also

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 · ·
Brown Dwarf Classes
Y · T · L

References

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