16 Tauri is a blue-white B-typesubgiant with an apparent magnitude of +5.45. It is approximately 430 light years from the Sun;[5] about the same distance as the Pleiades. The interstellar extinction of this star is fairly small at 0.05 magnitudes.[11] The projected rotational velocity of the equator is 185 km/s.[8] It is over four times the radius of the Sun and has a surface temperature of 12,800 K.[6][7]
It bore the traditional named Celaeno (or Celeno) and was called the "Lost Pleiad" by Theon the Younger.[12] Celaeno was one of the Pleiades sisters in Greek mythology. Could be related to kel anus (“black ring”). In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[13] to catalogue and standardize proper names for stars. The WGSN approved the name Celaeno for this star on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names.[14]
^ abJohnson, H. L.; Morgan, W. W. (1953). "Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas". Astrophysical Journal. 117: 313–352. Bibcode:1953ApJ...117..313J. doi:10.1086/145697.
^ abAbt, Helmut A.; Levato, Hugo; Grosso, Monica (July 11–17, 2002). "Rotational velocities of B stars". In K. S. Cheng; K. C. Leung; T. P. Li (eds.). Proceedings, Stellar astrophysics - a tribute to Helmut A. Abt. Sixth Pacific Rim Conference. Xi'an, China: Kluwer Academic Publishers. pp. 165–172. ISBN1-4020-1683-2. Vizier table J/ApJ/573/359.
^Breger, M. (August 1984). "The Pleiades cluster. I - Polarization and reddening of the brighter stars". Astronomy and Astrophysics. 137 (1): 145–148. Bibcode:1984A&A...137..145B.
