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・ Deltona massacre
・ Delta-Valerolactone
・ Delta-Viniferin
・ Delta-wye transformer
・ Delta/Delta Heritage Air Park
・ Delta/Greely School District
・ Delta1 Canis Minoris
・ Delta1 Chamaeleontis
・ Delta1 Gruis
・ Delta1 Lyrae
・ Delta1-piperideine-2-carboxylate reductase
・ Delta11-fatty-acid desaturase
・ Delta12-fatty acid dehydrogenase
・ Delta12-fatty-acid desaturase
・ Delta14-sterol reductase
Delta2 Canis Minoris
・ Delta2 Chamaeleontis
・ Delta2 Gruis
・ Delta2 Lyrae
・ Delta24(241)-sterol reductase
・ Delta24-sterol reductase
・ Delta3 Canis Minoris
・ Delta3-cis-Delta2-trans-enoyl-CoA isomerase
・ Delta3D
・ Delta6-protoilludene synthase
・ Delta8-fatty-acid desaturase
・ Deltabaculovirus
・ Deltabreen
・ Deltacephalaspis
・ Deltacephalus


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Delta2 Canis Minoris : ウィキペディア英語版
Delta2 Canis Minoris

:''For other star systems with this Bayer designation, see Delta Canis Minoris.''

Delta2 Canis Minoris (δ2 CMi, δ2 Canis Minoris) is a star in the constellation Canis Minor. It is one of three stars that share the Bayer designation Delta Canis Minoris in Johann Bayer's 1603 ''Uranometria'' atlas of bright stars. The Flamsteed designation for this star is 8 Canis Minoris, indicating it is the eighth star in the constellation Canis Minoris listed in John Flamsteed's 1712 star catalogue.
As of 2008, no companion has been discovered orbiting δ2 Canis Minoris; it appears to be a solitary star.〔〔 The apparent magnitude of 5.589 means this star is visible to the naked eye, although it is faint and requires a dark sky to view.〔 Based upon parallax measurements, this star is about 136 light years distant from the Earth.〔
This star is rotating rapidly; the projected rotational velocity is 117.6 km/s,〔 which means that the equator of this star is rotating at this velocity or greater. By comparison, the Sun is a slow rotator with an equatorial azimuthal velocity of 2 km/s.〔 δ2 Canis Minoris has a stellar classification of F2 V,〔 indicating that this is an F-type main-sequence star that is generating energy at its core through thermonuclear fusion of hydrogen. The effective temperature of the photosphere is about 7053 K,〔 giving it the yellow-white hue that is characteristic of F-type stars.〔 The radius of this star can be estimated indirectly based upon the measured brightness and color information, which suggests the star is about the same size as the Sun.〔
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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