Pi3 Orionis or Pi-3 Orionis (π3 Ori / π3 Orionis) is the brightest star in the lion's hide (or shield) that Orion is holding. It also has the traditional name Tabit. The Pleiades star cluster A star is a massive body of plasma in outer space which is currently or has in the past produced energy through nuclear fusion. ... Orion, a constellation often referred to as The Hunter, is a prominent constellation, perhaps the best-known in the sky. ...
In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standardized distance away. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ...
It lies at the western edge (04:49:50.41+06:57:40.59, ICRS 2000.0) of Constellation Orion, the Hunter -- southeast of Aldebaran (Alpha Tauri), south of Pi1 and Pi2 Orionis, and north of Pi4 Orionis.
Pi3Orionis A is a New Suspected Variable designated NSV 1731.
Pi3Orionis B? According to the Yale Bright Star Catalogue, 1991 5th Revised Edition notes entry for HR 1543, its visual companion may be optical.
According to the Hertzsprung-Russell diagram, a red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giants.
Bellatrix (γ Ori / γ Orionis / Gamma Orionis) is the third brightest star in the constellation Orion and the twenty-second brightest star in the nighttime sky.
Tabit (π3 Orionis / π3 Ori / Pi3Orionis) or is the brightest star in the lions hide (or shield) that Orion is holding.
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