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Cor Caroli information


α Canum Venaticorum
The location of α Canum Venaticorum (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canes Venatici
α2 CVn
Right ascension 12h 56m 01.66622s[1]
Declination +38° 19′ 06.1541″[1]
Apparent magnitude (V) 2.84 to 2.98[2]
α1 CVn
Right ascension 12h 56m 00.43258s[1]
Declination +38° 18′ 53.3768″[1]
Apparent magnitude (V) 5.60[3]
Characteristics
α2 CVn
Spectral type A0pSiEuHg[4]
U−B color index −0.32[5]
B−V color index −0.12[5]
Variable type α2 CVn
α1 CVn
Spectral type F2V[6]
U−B color index −0.03[7]
B−V color index +0.34[7]
Astrometry
α2 CVn
Radial velocity (Rv)−4.1±0.2[8] km/s
Proper motion (μ) RA: −235.08[1] mas/yr
Dec.: 53.54[1] mas/yr
Parallax (π)32.7227 ± 0.5844 mas[9]
Distance100 ± 2 ly
(30.6 ± 0.5 pc)
Absolute magnitude (MV)0.16±0.08[10]
α1 CVn
Radial velocity (Rv)−0.60 ± 0.9[11] km/s
Proper motion (μ) RA: −232.86[1] mas/yr
Dec.: 55.69[1] mas/yr
Parallax (π)30.6121 ± 0.0666 mas[12]
Distance106.5 ± 0.2 ly
(32.67 ± 0.07 pc)
Details
α2 CVn
Mass2.97±0.07[10] M
Radius2.49±0.26[10] R
Luminosity101±12[10] L
Surface gravity (log g)3.9±0.1[10] cgs
Temperature11,600±500[10] K
Rotation5.46939 d[10]
Rotational velocity (v sin i)18.4±0.5[10] km/s
Age165+60
−70
[10] Myr
α1 CVn
Mass1.47±0.15[13] M
Radius1.5[13] R
Surface gravity (log g)4.25±0.22[13] cgs
Temperature7,080[13] K
Rotational velocity (v sin i)18[14] km/s
Other designations
α CVn, Alpha CVn, 12 CVn, BD+39° 2580, ADS 8706 AB, CCDM J12560+3819B[15]
α2 CVn: α CVn A, 12 CVn A, FK5 485, GC 17557, HD 112413, HIP 63125, HR 4915, SAO 63257[15]
α1 CVn: α CVn B, 12 CVn B, GC 17556, HD 112412, HIP 63121, HR 4914, SAO 63256[16]
Database references
SIMBADα2 CVn
α1 CVn

Cor Caroli /ˌkɔːr ˈkærəl/ is a binary star designated Alpha Canum Venaticorum or α Canum Venaticorum. The International Astronomical Union uses the name "Cor Caroli" specifically for the brighter star of the binary.[17] Alpha Canum Venaticorum is the brightest point of light in the northern constellation of Canes Venatici.

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Cor Caroli

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Cor Caroli /ˌkɔːr ˈkærəlaɪ/ is a binary star designated Alpha Canum Venaticorum or α Canum Venaticorum. The International Astronomical Union uses the name...

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USS Cor Caroli

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USS Cor Caroli (AK-91) was a Crater-class cargo ship commissioned by the US Navy for service in World War II and manned by a US Coast Guard crew. She was...

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Canes Venatici

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representing the dogs of Boötes the Herdsman, a neighboring constellation. Cor Caroli is the constellation's brightest star, with an apparent magnitude of 2...

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Caroli

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Borås in Sweden USS Cor Caroli (AK-91), American cargo ship This disambiguation page lists articles associated with the title Caroli. If an internal link...

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Messier 3

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halfway along the north-west line that would join Arcturus (α Boötis) to Cor Caroli (α Canum Venaticorum). Using a telescope with a 25 cm (9.8 in) aperture...

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Spica

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by extension, is also part of the Great Diamond together with the star Cor Caroli. In 2016, the International Astronomical Union organized a Working Group...

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Cor

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Look up Cor, cor, or cor- in Wiktionary, the free dictionary. Cor or COR may refer to: Cor people, an ethnic group of Vietnam Cor (given name), including...

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Spring Triangle

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this triangle is more nearly equilateral. These stars, together with Cor Caroli, form parts of a larger spring asterism called the Great Diamond. Arcturus...

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Alpha2 Canum Venaticorum variable

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is named after is α2 Canum Venaticorum, a star in the binary system of Cor Caroli, which is in the northern constellation of Canes Venatici. Its brightness...

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Great Diamond

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evenings in the Northern Hemisphere. It is composed of the following stars: Cor Caroli (α CVn), in Canes Venatici Denebola (β Leo), the tail of Leo Spica (α...

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Former constellations

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‍109 ‍Herculis eastern Hercules Cor Caroli Regis Martyris Cordis Caroli Charles's Heart 1673 Charles Scarborough Cor Caroli central Canes Venatici Corona...

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Chara

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or Southern dogs, a constellation including Beta Canum Venaticorum and Cor Caroli Chara (given name) Chara (singer), Japanese singer Chara (surname) Chara...

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IAU designated constellations

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/ˈkeɪnəm vɪnætɪˈkɒrəm/ 1690, Firmamentum Sobiescianum, Hevelius hunting dogs Cor Caroli Canis Major /ˈkeɪnɪs ˈmeɪdʒər/ CMa CMaj Canis Majoris /ˈkeɪnɪs məˈdʒɒrɪs/...

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Stellar designations and names

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juncture. The first such case (discounting characters from mythology) was Cor Caroli (α CVn), named in the 17th century for Charles I of England. The remaining...

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List of brightest natural objects in the sky

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Iota Orionis Quadruple star system 2.79 2.72 Beta Eridani Star 2.79 2.76 Cor Caroli Binary star system 2.79 2.78 Delta Crucis Star 2.79 Epsilon Virginis Star...

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List of proper names of stars

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astronomer Nicolaus Copernicus. // Canes Venatici α2 Canum Venaticorum Aa Cor Caroli Named after Charles I of England by Sir Charles Scarborough. /ˌkɔːr ˈkærəlaɪ/...

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Denebola

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asterism, and by extension, also of the Great Diamond together with the star Cor Caroli. Denebola is a relatively young star with an age estimated at less than...

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Beta Canum Venaticorum

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light-years (8.5 parsecs) distant from the Sun. Along with the brighter star Cor Caroli, the pair form the "southern dog" in this constellation that represents...

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Arcturus

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on the source), Arcturus is part of the Spring Triangle asterism. With Cor Caroli, these four stars form the Great Diamond asterism. Ptolemy described Arcturus...

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IAU Working Group on Star Names

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astronomer Nicolaus Copernicus). The WGSN approved the historical name Cor Caroli (Latin for 'heart of Charles') for the star α Canum Venaticorum, so named...

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Astronomical naming conventions

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Cancri A, respectively. In July 2016, the IAU WGSN approved the name Cor Caroli (Latin for 'heart of Charles') for the star Alpha Canum Venaticorum, so...

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Stars named after people

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 Barnard who discovered it has the highest known proper motion of any star. Cor Caroli (Latin for 'heart of Charles') for the star Alpha Canum Venaticorum, so...

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List of Chinese star names

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Com 26 Com 20 Com 5 Com 2 Com 常陳 (Cháng Chén, Imperial Guards) α CVn (Cor Caroli) 10 CVn 9 CVn β CVn (Chara) 6 CVn 2 CVn 67 UMa 上台 (Shàng Tái, Upper Step)...

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Microscopium

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magnetic spectrum variable stars with strong metallic lines, similar to Cor Caroli. They mark the constellation's specimen slide. Many notable objects are...

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List of astronomy acronyms

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stars with strong magnetic fields named after Alpha Canum Venaticorum (Cor Caroli), the archetype for the class ACYG – (celestial object) Alpha CYGni, a...

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