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Loading contentEta Persei
Miram is a red supergiant in the constellation Perseus (Persei), lying about 879.1 light-years from Earth.
Class K. Cooler orange stars. Long-lived and abundant; many are stable hosts for planets. Such stars have surface temperatures around 3,700–5,200 K and appear orange to the eye.
| Spectral type | K3Ib comp SB |
| Luminosity class | Ib |
| Apparent magnitude | 3.77 |
| Absolute magnitude | -3.38 |
| Luminosity (Sun = 1) | 1,964 |
| Colour index (B−V) | 1.69 |
| Distance | 879.1 ly (269.54 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.