List of stellar angular diameters - AbsoluteAstronomy.com

Star	Angular Diameter
R Doradus R Doradus R Doradus is the name of a red giant Mira variable star in the far-southern constellation Dorado, although visually it appears more closely associated with the constellation Reticulum. Its distance from Earth is 204 ± 9 light-years...	0.054" ± 0.005" (1250 nm) http://iapetus.phy.umist.ac.uk/rdor/rdor.html (855 nm)
Betelgeuse Betelgeuse Betelgeuse, also known by its Bayer designation Alpha Orionis , is the eighth brightest star in the night sky and second brightest star in the constellation of Orion, outshining its neighbour Rigel only rarely...	0.054" (720 nm) http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1992MNRAS.257..369W 0.265" ± 0.005" (400 nm) http://www.aas.org/publications/baas/v33n4/aas199/169.htm
Aldebaran Aldebaran Aldebaran is a red giant star located about 65 light years away in the zodiac constellation of Taurus. With an average apparent magnitude of 0.87 it is the brightest star in the constellation and is one of the brightest stars in the nighttime sky...	0.021"

Name	Type	dist.	diameter	Size
Alpha Arietis	K2III	65.9 ly	0.00699	14.8
Alpha Cassiopeiae Alpha Cassiopeiae Alpha Cassiopeiae is a second magnitude star in the constellation Cassiopeia, with the traditional name Schedar, sometimes spelt Shedir. Though listed as the alpha star by Johann Bayer, Schedar's visual brightness closely rivals the beta star in the constellation, Caph...	K0III	150.0	0.00569	27.4
Alpha Persei Alpha Persei Alpha Persei is the brightest star in the constellation of Perseus, just outshining the constellation's best known star Algol. It also bears the traditional names Mirfak and Algenib...	F5Ib	592	0.00313	59.3
Alpha Leporis Alpha Leporis Alpha Leporis is the brightest star in the constellation Lepus. It has the traditional name Arneb, from the Arabic أرنب ’arnab "hare"....	F0Ib	1280	0.00177	72.5
Betelgeuse Betelgeuse Betelgeuse, also known by its Bayer designation Alpha Orionis , is the eighth brightest star in the night sky and second brightest star in the constellation of Orion, outshining its neighbour Rigel only rarely...	M1Ib	640	0.054	734.4
Antares Antares Antares is a red supergiant star in the Milky Way galaxy and the sixteenth brightest star in the nighttime sky . Along with Aldebaran, Spica, and Regulus it is one of the four brightest stars near the ecliptic...	M1Ib	520	0.041	682.2
Proxima Centauri Proxima Centauri Proxima Centauri is a red dwarf star about 4.2 light-years distant in the constellation of Centaurus. It was discovered in 1915 by Robert Innes, the Director of the Union Observatory in South Africa, and is the nearest known star to the Sun, although it is too faint to be seen with the naked eye...	dM5	4.2	0.007	1.0
Polaris Polaris Polaris \|Alpha]] Ursae Minoris, commonly North Star or Pole Star, also Lodestar) is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star....	F7 Ib	430	0.00328	45.1

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