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K-type star in the constellation Delphinus
10 Delphini (10 Del) is a solitary
star in the equatorial
constellation
Delphinus. It has an
apparent magnitude of 6.00, allowing it to be faintly seen with the
naked eye.
Parallax measurements put the object at a distance of 493
light years but is drifting closer with a heliocentric
radial velocity of −32
km/s.
10 Delphini has a
stellar classification of K4 III
[3] or K2 III,
[11] both indicating that it is a
red giant. However, there is some uncertainty behind the first classification. It has twice the
mass of the Sun
[8] but at an age of 794
million years
[8] — expanded to 18 times the
radius of the Sun.
[9] It shines at 125
L☉
[9] from its enlarged
photosphere at an
effective temperature of 4,378
K,
[10] giving it an orange glow. 10 Del has a solar
metallicity.
[10]
10 Del has been suspected to be a variable star, although it hasn't been catalogued as such in the GCVS.
[12]
References
- ^
a
b
c
d
Brown, A. G. A.; et al. (Gaia collaboration) (2021).
"Gaia Early Data Release 3: Summary of the contents and survey properties".
Astronomy & Astrophysics. 649: A1.
arXiv:
2012.01533.
Bibcode:
2021A&A...649A...1G.
doi:
10.1051/0004-6361/202039657.
S2CID
227254300. (Erratum:
doi:
10.1051/0004-6361/202039657e).
Gaia EDR3 record for this source at
VizieR.
-
^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30.
Bibcode:
2000A&A...355L..27H.
ISSN
0004-6361.
- ^
a
b Adams, Walter S.; Joy, Alfred H.; Humason, Milton L.; Brayton, Ada Margaret (April 1935).
"The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars". The Astrophysical Journal. 81: 187.
Bibcode:
1935ApJ....81..187A.
doi:
10.1086/143628.
ISSN
0004-637X.
-
^ Paunzen, E. (May 2022).
"Catalogue of stars measured in the Geneva seven-colour photometric system". Astronomy & Astrophysics. 661: A89.
arXiv:
2111.04810.
Bibcode:
2022A&A...661A..89P.
doi:
10.1051/0004-6361/202142355.
eISSN
1432-0746.
ISSN
0004-6361.
-
^ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)". Private Communication.
Bibcode:
1970Priv.........0H.
-
^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165.
arXiv:
astro-ph/0409579.
Bibcode:
2005A&A...430..165F.
doi:
10.1051/0004-6361:20041272.
S2CID
17804304.
-
^ 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
255204555.
- ^
a
b
c
d Feuillet, Diane K.; Bovy, Jo; Holtzman, Jon; Girardi, Léo; MacDonald, Nick; Majewski, Steven R.; Nidever, David L. (20 January 2016).
"Determining Ages of Apogee Giants with Known Distances". The Astrophysical Journal. 817 (1): 40.
arXiv:
1511.04088.
Bibcode:
2016ApJ...817...40F.
doi:
10.3847/0004-637X/817/1/40.
eISSN
1538-4357.
- ^
a
b
c
d
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.
- ^
a
b
c
d
e Forsberg, R.; Jönsson, H.; Ryde, N.; Matteucci, F. (November 2019).
"Abundances of disk and bulge giants from high-resolution optical spectra". Astronomy & Astrophysics. 631: A113.
arXiv:
1909.10535.
Bibcode:
2019A&A...631A.113F.
doi:
10.1051/0004-6361/201936343.
eISSN
1432-0746.
ISSN
0004-6361.
-
^ Bartkevicius, A.; Lazauskaite, R. (1 January 1997).
"Classification of Population II Stars in the Vilnius Photometric System. II. Results". Open Astronomy. 6 (4): 499.
Bibcode:
1997BaltA...6..499B.
doi:
10.1515/astro-1997-0402.
eISSN
2543-6376.
-
^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88.
Bibcode:
2017ARep...61...80S.
doi:
10.1134/S1063772917010085.
ISSN
1063-7729.
S2CID
255195566.