}}{{Starbox reference
| Simbad = 6+CVn
}}{{Starbox end}}6 Canum Venaticorum is a single[21] star in the northern constellation Canes Venatici, located 246 light years from the Sun.[1] It is visible to the naked eye as a faint yellow-hued star with an apparent visual magnitude of +5.01.[3] The star is moving closer to the Earth with a heliocentric radial velocity of −4.2 km/s.[7]This is an evolved G-type giant star with a stellar classification of G9 III,[5] which means it has exhausted the hydrogen supply at its core and expanded. It is a red clump giant, indicating that it is on the horizontal branch and is generating energy through the helium fusion at its core.[4] Data from the Hipparcos mission provided evidence of microvariability with an amplitude of 0.0056 in magnitude and a frequency of 0.00636 per day, or one cycle every 157 days.[27]
6 Canum Venaticorum is about two[3] billion years old with double[3] the mass of the Sun. It has expanded to 9[7] times the Sun's radius and is radiating 68[3] times the Sun's luminosity from its photosphere at an effective temperature of 4,938 K.[3]
References
1. ^1 2 3 4 5 6 {{cite DR2|1532184644606148352}}
2. ^1 2 {{citation | last1=Alves | first1=David R. | title=K-Band Calibration of the Red Clump Luminosity | journal=The Astrophysical Journal | volume=539 | issue=2 | pages=732–741 | date=August 2000 | doi=10.1086/309278 | bibcode=2000ApJ...539..732A | postscript=. | arxiv=astro-ph/0003329 }}
3. ^1 {{citation | last1=Koen | first1=Chris | last2=Eyer | first2=Laurent | title=New periodic variables from the Hipparcos epoch photometry | journal=Monthly Notices of the Royal Astronomical Society | volume=331 | issue=1 | pages=45 | year=2002 | bibcode=2002MNRAS.331...45K | postscript=. }}
4. ^1 {{citation | title=A catalogue of multiplicity among bright stellar systems | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869 | date=2008 | doi=10.1111/j.1365-2966.2008.13596.x | postscript=. | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 }}
5. ^1 2 3 4 5 6 7 {{citation | display-authors=1 | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey | title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity | journal=The Astronomical Journal | postscript=. | volume=135 | issue=1 | pages=209–231 | date=January 2008 | doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M }}
6. ^1 2 3 4 5 6 7 8 9 10 11 {{citation | title=Abundances in the Local Region. I. G and K Giants | last1=Luck | first1=R. Earle | journal=Astronomical Journal | postscript=. | volume=150 | issue=3 | at=88 | year=2015 | arxiv=1507.01466 | bibcode=2015AJ....150...88L | doi=10.1088/0004-6256/150/3/88 }}
7. ^1 2 {{citation | title=The Perkins catalog of revised MK types for the cooler stars | author1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C. | journal=Astrophysical Journal Supplement Series | volume=71 | pages=245 | year=1989 | postscript=. | bibcode=1989ApJS...71..245K | doi=10.1086/191373 }}
8. ^1 {{citation | display-authors=1 | last1=Park | first1=Sunkyung | last2=Kang | first2=Wonseok | last3=Lee | first3=Jeong-Eun | last4=Lee | first4=Sang-Gak | title=Wilson-Bappu Effect: Extended to Surface Gravity | journal=The Astronomical Journal | volume=146 | issue=4 | pages=73 | year=2013 | doi=10.1088/0004-6256/146/4/73 | bibcode=2013AJ....146...73P | arxiv=1307.0592 | postscript=. }}