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Loading content81 Tauri is a main-sequence star in the constellation Taurus (Tauri), lying about 146.52 light-years from Earth.
Class A. White stars with strong hydrogen lines. Many of the brightest stars in the sky are class A. Such stars have surface temperatures around 7,500–10,000 K and appear white to the eye.
| Spectral type | Am |
| Apparent magnitude | 5.47 |
| Absolute magnitude | 2.21 |
| Luminosity (Sun = 1) | 11.397 |
| Colour index (B−V) | 0.258 |
| Distance | 146.52 ly (44.92 pc) |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
A main-sequence star fuses hydrogen into helium in its core. It will remain on the main sequence for most of its life before evolving into a giant.
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.