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The Sun is the brightest star as viewed from Earth, at −26.78 mag. The second brightest is Sirius at −1.46 mag. For comparison, the brightest non-stellar objects in the Solar System have maximum brightnesses of: the Moon −12.7 mag [1] Venus −4.92 mag; Jupiter −2.94 mag; Mars −2.94 mag; Mercury −2.48 mag; Saturn −0.55 mag [2]
Three of these stars are in Crux making it the most densely populated as to those stars (this being 3.26% of these 92 stars, and in turn being 19.2 times more than the expected 0.17% that would result on a homogenous distribution of all bright stars and a randomised drawing of all 88 constellations, given its area, 0.17% of the sky).
Betelgeuse is the brightest near-infrared source in the sky with a J band magnitude of −2.99; [94] only about 13% of the star's radiant energy is emitted as visible light. If human eyes were sensitive to radiation at all wavelengths, Betelgeuse would appear as the brightest star in the night sky. [33] Betelgeuse seen close-up
Alpha Leporis is the star's Bayer designation.The traditional name Arneb comes from the Arabic أرنب ’arnab 'hare' [14] ('Lepus' is Latin for hare).In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) [15] to catalog and standardize proper names for stars.
Acrux is the brightest star in the southern constellation of Crux. It has the Bayer designation α Crucis , which is Latinised to Alpha Crucis and abbreviated Alpha Cru or α Cru . With a combined visual magnitude of +0.76, it is the 13th-brightest star in the night sky .
The layout of the brighter stars of Tucana has been likened to a kite. [12] Within the constellation's boundaries are around 80 stars brighter than an apparent magnitude of 7. [13] At an apparent magnitude of 2.86, [14] Alpha Tucanae is the brightest star in the constellation and marks the toucan's head. [9]
Regulus is the brightest object in the constellation Leo and one of the brightest stars in the night sky. It has the Bayer designation designated α Leonis, which is Latinized to Alpha Leonis, and abbreviated Alpha Leo or α Leo. Regulus appears singular, but is actually a quadruple star system composed of four stars that are organized into two ...
UY Scuti (BD-12°5055) is a red supergiant star, located 5,900 light-years away in the constellation Scutum.It is also a pulsating variable star, with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56, which is too dim for naked-eye visibility.