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Star in the constellation Aquarius
39 Aquarii is a
star in the
zodiac
constellation of
Aquarius . 39 Aquarii is its
Flamsteed designation . It is a faint naked eye star with an
apparent visual magnitude of 6.03.
[2] Based upon an annual
parallax shift of 23.78 measured with a 3%
margin of error ,
[6] this star is at a distance of around 137
light-years (42
parsecs ) from Earth. It is a
double star with a magnitude 9.3 companion at an
angular separation of 0.6
arcseconds along a
position angle of 257°.
[9]
The
stellar classification of this star is F0 V;
[3] hence it belongs to the category of
F-type main sequence stars that generate energy through
hydrogen fusion at the
core . It is 1.8
[7] billion years old with 1.35
[8] times the
mass of the Sun and 1.79
[1] times the
Sun's radius . The star is radiating 6.1
[1] times the
luminosity of the Sun from its
photosphere at an
effective temperature of 6,806 K.
[3]
References
^
a
b
c
d
e
f
g
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 Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa , 27 : 11,
Bibcode :
1968MNSSA..27...11C .
^
a
b
c
d
e
f Cenarro, A. J.; et al. (January 2007), "Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters",
Monthly Notices of the Royal Astronomical Society , 374 (2): 664–690,
arXiv :
astro-ph/0611618 ,
Bibcode :
2007MNRAS.374..664C ,
doi :
10.1111/j.1365-2966.2006.11196.x ,
S2CID
119428437 .
^
a
b
"* 39 Aqr" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2012-07-16 .
^ Wilson, Ralph Elmer (1953), "General catalogue of stellar radial velocities", Carnegie Institute Washington D.C. Publication ,
Carnegie Institution of Washington ,
Bibcode :
1953GCRV..C......0W .
^
a
b
c van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 474 (2): 653–664,
arXiv :
0708.1752 ,
Bibcode :
2007A&A...474..653V ,
doi :
10.1051/0004-6361:20078357 ,
S2CID
18759600 .
^
a
b
c Nordström, B.; et al. (May 2004), "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14 000 F and G dwarfs", Astronomy and Astrophysics , 418 (3): 989–1019,
arXiv :
astro-ph/0405198 ,
Bibcode :
2004A&A...418..989N ,
doi :
10.1051/0004-6361:20035959 ,
S2CID
11027621 .
^
a
b David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal , 804 (2): 146,
arXiv :
1501.03154 ,
Bibcode :
2015ApJ...804..146D ,
doi :
10.1088/0004-637X/804/2/146 ,
S2CID
33401607 .
^ Fabricius, C.; Makarov, V. V. (April 2000), "Two-colour photometry for 9473 components of close Hipparcos double and multiple stars", Astronomy and Astrophysics , 356 : 141–145,
Bibcode :
2000A&A...356..141F .
External links