70 Virginis

Starbox begin
name = 70 Virginis Starbox image


caption = 70 Virginis system as rendered in CelestiaStarbox observe
epoch = J2000.0
constell = Virgo
ra = RA|13|28|25.8
dec = DEC|+13|46|43.5
appmag_v = +5.00Starbox character
class = G2.5Va
r-i = 0.36
v-r = 0.39
b-v = 0.71
u-b = 0.26
variable = noneStarbox astrometry
radial_v = 5
prop_mo_ra = −234.81
prop_mo_dec = −576.19
parallax = 56.11
p_error = 0.24
parallax_footnote = [cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=65500|title=HIP 65721|work=Hipparcos, the New Reduction|author=van Leeuwen, F.|year=2007|accessdate=2008-08-17]
absmag_v = +3.75Starbox detail
age = 8,200 million
metal = −0.03 [Fe/H]
mass = 1.1
radius = 1.76
density = 284
gravity = 3.58
luminosity = 3.06
temperature = 5770
rotation = unknown Starbox catalog
names = HD 117176, HR 5072, BD+14°2621, Gl 512.1, WDS 13284+1347A, and SAO 100582.Starbox reference
Simbad = HD+117176

70 Virginis is a yellow dwarf star approximately 58 light-years away in the constellation Virgo. It is rather unusually bright for its spectral type and may be just starting to evolve into the subgiant phase.

In 1996, 70 Virginis was discovered to have an extrasolar planet in orbit around it. [cite journal | url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1996ApJ...464L.147M&db_key=AST&nosetcookie=1 | author=Marcy, Geoffrey W.; Butler, R. Paul| title=A Planetary Companion to 70 Virginis | journal=The Astrophysical Journal Letters | volume=464 |year=1996 | pages=L147 – L151| doi=10.1086/310096 ] There is also a dust disc at a temperature of 156 K located about 3.4 AU from the star. [cite journal|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008ApJ...674.1086T&db_key=AST&nosetcookie=1|author=Trilling, D. E.; Bryden, G.; Beichman, C. A.; Rieke, G. H.; Su, K. Y. L.; Stansberry, J. A.; Blaylock, M.; Stapelfeldt, K. R.; Beeman, J. W.; Haller, E. E.|title=Debris Disks around Sun-like Stars|journal=The Astrophysical Journal|volume=674|issue=2|pages=1086 – 1105|year=2008|doi=10.1086/525514]

Planetary system

PlanetboxOrbit
exoplanet = b
mass = >7.49 ± 0.61
period = 116.6884 ± 0.0044
semimajor = 0.484 ± 0.028
eccentricity = 0.4007 ± 0.0035PlanetboxOrbit disk
disk = Dust disc
periapsis = 3.4

References

External links

* [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=70+Virginis&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2006&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0 SIMBAD: HD 117176 -- High proper-motion Star]
* [http://www.solstation.com/stars2/70virgin.htm SolStation: 70 Virginis]
* [http://exoplanet.eu/star.php?st=70+Vir Extrasolar Planets Encyclopaedia: 70 Virginis]
* [http://www.extrasolar.net/startour.asp?StarCatId=normal&StarId=10 Extrasolar Visions: 70 Virginis]