21 Tauri is a blue-white hued B-type main sequence star with a stellar classification of B8 V. It is a single star with around three times the mass of the Sun and is 100 million years old. The star is radiating 100 times the Sun's luminosity from its photosphere at an effective temperature of 11,041 K. It displays an infrared excess, but this is due to reflection nebula rather than a circumstellar disk.
