39 Aquarii
{{short description|Star in the constellation Aquarius}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000
| dec = {{DEC|-14|11|38.3009}}
| constell = Aquarius
}}
{{Starbox character
| variable =
}}
{{Starbox astrometry
| parallax = 22.5378
| p_error = 0.1723
}}
{{Starbox detail
| radius = {{Val|1.79|0.04|0.10}}
| luminosity = {{Val|6.109|0.054}}
| rotational_velocity =
}}
{{Starbox catalog
| names = {{odlist | F=39 Aqr | BD=-14°6229| HD=210705 | HIP=109624 | HR=8462 | SAO=164923 }}
}}
{{Starbox reference
|Simbad=39+Aqr
}}
{{Starbox end}}
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. Based upon an annual parallax shift of 23.78 measured with a 3% margin of error, this star is at a distance of around {{Convert|137|ly|pc|abbr=off|lk=on}} 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°.
The stellar classification of this star is F0 V; 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 billion years old with 1.35 times the mass of the Sun and 1.79 times the Sun's radius. The star is radiating 6.1 times the luminosity of the Sun from its photosphere at an effective temperature of 6,806 K.
References
{{reflist|refs=
{{cite DR2|2600144755430782592}}
| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.
| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets
| journal=The Astrophysical Journal
| volume=804 | issue=2 | pages=146 | year=2015
| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}
{{citation | last=Wilson | first=Ralph Elmer | year=1953 | title=General catalogue of stellar radial velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=Carnegie Institution of Washington | bibcode=1953GCRV..C......0W | postscript=. }}
{{citation | display-authors=1 | last1=Cenarro | first1=A. J. | last2=Peletier | first2=R. F. | last3=Sánchez-Blázquez | first3=P. | last4=Selam | first4=S. O. | last5=Toloba | first5=E. | last6=Cardiel | first6=N. | last7=Falcón-Barroso | first7=J. | first8=Gorgas | last8=J. | last9=Jiménez-Vicente | first9=J. | title=Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters | journal=Monthly Notices of the Royal Astronomical Society | volume=374 | issue=2 | pages=664–690 | doi=10.1111/j.1365-2966.2006.11196.x | bibcode=2007MNRAS.374..664C | arxiv=astro-ph/0611618 | postscript=. |date=January 2007| doi-access=free | s2cid=119428437 }}
{{cite simbad | title=* 39 Aqr | access-date=2012-07-16 }}
}}
External links
- [http://aladin.u-strasbg.fr/AladinPreview?-c=22+12+25.7574-14+11+38.245&ident=SV*+ZI++2075&submit=Aladin+previewer Image 39 Aquarii]
{{Stars of Aquarius}}
{{DEFAULTSORT:39 Aquarii}}
Category:F-type main-sequence stars