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Loading content71 Pegasi is a red supergiant in the constellation Pegasus (Pegasi), lying about 520.2 light-years from Earth.
Class M. Cool red stars. The most common type in the galaxy, ranging from red dwarfs to red giants. Such stars have surface temperatures around 2,400–3,700 K and appear red to the eye.
| Spectral type | M5IIIa |
| Luminosity class | Ia |
| Apparent magnitude | 5.33 |
| Absolute magnitude | -0.68 |
| Luminosity (Sun = 1) | 164 |
| Colour index (B−V) | 1.481 |
| Distance | 520.2 ly (159.49 pc) |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
A red supergiant is a colossal, cool, luminous evolved star. The largest known stars are red supergiants, and many end as supernovae.
Facts on this topic will be cited from these primary and reference sources.
Aggregated, openly-licensed star catalogue combining Hipparcos, the Yale Bright Star Catalogue, and the Gliese Catalogue of Nearby Stars.
High-precision parallax, magnitude, and position for ~118,000 stars.