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Star in the constellation Camelopardalis
20 Camelopardalis (20 Cam) is a solitary star in the
circumpolar constellation
Camelopardalis . It has an apparent magnitude of 7.45, making it readily visible in binoculars but not to the
naked eye . Located about 880
light years away, it is approaching the
Solar System with a
radial velocity of −50.3
km/s . Due to its faintness, 20 Cam is one of the 220
Flamsteed stars without
Bright Star Catalog designations.
[10]
20 Cam is a
red clump
[3]
giant star with a
spectral classification of G8 II-III.
[4] It has a measured
angular diameter of 0.44
mas ,
[11] with an actual radius of 13
R ☉ at its estimated distance. It has 1.83 times the
mass of the Sun and shines at 142 times the
luminosity of the Sun from its enlarged
photosphere at an
effective temperature of 5,064
K , giving it a yellow glow. 20 Cam's
metallicity – elements heavier than
helium – is around solar level.
[9]
References
^
a
b
c
d
Brown, A. G. A. ; et al. (Gaia collaboration) (2021).
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arXiv :
2012.01533 .
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doi :
10.1051/0004-6361/202039657 .
S2CID
227254300 . (Erratum:
doi :
10.1051/0004-6361/202039657e ) .
Gaia EDR3 record for this source at
VizieR .
^
a
b
c Oja, T. (August 1991). "UBV photometry of stars whose positions are accurately known. VI". Astronomy and Astrophysics Supplement Series . 89 : 415.
Bibcode :
1991A&AS...89..415O .
ISSN
0365-0138 .
^
a
b Rybka, S. P. (2007). "A catalogue of candidate Red Clump stars in the Tycho-2". Kinematika I Fizika Nebesnykh Tel . 23 : 102.
Bibcode :
2007KFNT...23..102R .
ISSN
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^
a
b Yoss, Kenneth M. (November 1961).
"Spectral and Luminosity Classifications and Measurements of the Strength of Cyanogen Absorption for Late-Type Stars from Objective-Prism Spectra" . The Astrophysical Journal . 134 : 809.
Bibcode :
1961ApJ...134..809Y .
doi :
10.1086/147209 .
ISSN
0004-637X .
^
a
b
Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018).
"Gaia Data Release 2: Summary of the contents and survey properties" .
Astronomy & Astrophysics . 616 . A1.
arXiv :
1804.09365 .
Bibcode :
2018A&A...616A...1G .
doi :
10.1051/0004-6361/201833051 .
Gaia DR2 record for this source at
VizieR .
^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331–346.
arXiv :
1108.4971 .
Bibcode :
2012AstL...38..331A .
doi :
10.1134/S1063773712050015 .
ISSN
1063-7737 .
S2CID
119257644 .
^ Anders, F.; et al. (February 2022).
"Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5" . Astronomy & Astrophysics . 658 : A91.
arXiv :
2111.01860 .
Bibcode :
2022A&A...658A..91A .
doi :
10.1051/0004-6361/202142369 .
ISSN
0004-6361 .
^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics . 657 : A7.
arXiv :
2109.10912 .
Bibcode :
2022A&A...657A...7K .
doi :
10.1051/0004-6361/202142146 .
S2CID
237605138 .
^
a
b
c
d Ting, Yuan-Sen; Hawkins, Keith; Rix, Hans-Walter (3 May 2018).
"A Large and Pristine Sample of Standard Candles across the Milky Way: ~100,000 Red Clump Stars with 3% Contamination" . The Astrophysical Journal . 858 (1): L7.
arXiv :
1803.06650 .
Bibcode :
2018ApJ...858L...7T .
doi :
10.3847/2041-8213/aabf8e .
ISSN
0004-637X .
^ Bidelman, W. P. (1990). "Flamsteed stars not contained in the Yale "Catalogue of Bright Stars" ". Bulletin d'Information du Centre de Données Stellaires . 38 : 13.
Bibcode :
1990BICDS..38...13B .
^ Bourgés, L.; Lafrasse, S.; Mella, G.; Chesneau, O.; Bouquin, J. L.; Duvert, G.; Chelli, A.; Delfosse, X. (May 2014). "The JMMC Stellar Diameters Catalog v2 (JSDC): A New Release Based on SearchCal Improvements". Astronomical Data Analysis Software and Systems Xxiii . 485 : 223.
Bibcode :
2014ASPC..485..223B .