Spectral TypeM6 Ia
Temperature3,200 K
M6 Ia TypeConstellation: Scutum
Stephenson 2-18
St2-18
Stephenson 2-18 is an extreme red supergiant among the largest known stars.
Distance
19,000 ly
Light Years from Earth
Age
10 million years
Estimated
Mass
35 M☉
Relative to Sun
Radius
2,150 R☉
Relative to Sun
Surface Temp
3,200 K
Effective Temp
Luminosity
440,000 L☉
Total Energy Output
Astrophysical Data
Apparent Magnitude15.00
Absolute Magnitude-9.00
Spectral ClassificationM6 Ia