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Baris 1:
{{short description|Star in the constellation Virgo}}
{{kembangkan}}
{{Starbox begin
{{refimprove}}
{{Planetbox begin
| name = 70 Virginis
}}
{{PlanetboxStarbox image
| image = [[Berkas:70 virginis.jpg|250px]]
| caption = 70 Virginis
}}
{{Starbox observe
{{Planetbox star
| epoch = J2000.0
| constell = [[Virgo (constellation)|Virgo]]
| ra = {{RA|13|28|25.80819}}<ref name=GaiaDR2>{{citation|url=http://vizier.u-strasbg.fr/viz-bin/VizieR-S?Gaia%20DR2%203740176925743650688 | title= Gaia DR2 record for this source}}</ref>
| RA = {{RA|13|28|25.8}}
| DECdec = {{DEC|+13|46|43.56430}}<ref name=GaiaDR2/>
| appmag_v = +4.97<ref name=Anderson2012/>
| app_mag = 5.00
| dist_ly = 59.1
| dist_pc = 18.1
| class = G2.5Va
| mass = 1.1
| radius = 1.858 ± 0.124
| temperature = 5770
| metallicity = −0.03
| age = 8.2
}}
{{Starbox character
{{Planetbox end}}
| class = G4&nbsp;V-IV<ref name="Strassmeier2017"/>
| r-i = 0.36
| v-r = 0.39
| b-v = {{Val|0.714|0.007}}<ref name=Anderson2012>{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | postscript=. }}</ref>
| u-b = 0.26
| variable = none
}}
{{Starbox astrometry
| radial_v = {{Val|4.44|0.13}}<ref name=Anderson2012/>
| prop_mo_ra = −235.562<ref name=GaiaDR2/>
| prop_mo_dec = −576.283<ref name=GaiaDR2/>
| parallax = 55.8347
| p_error = 0.1730
| parallax_footnote =<ref name="van Leeuwen2007"/>
| absmag_v = {{Val|+3.70|0.01}}<ref name="Holmberg">{{cite web | url=http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/130/gcs3&recno=9191 | title=HD 117176 | work=Geneva-Copenhagen Survey of Solar neighbourhood III | author=Holmberg | date=2009 | accessdate=2010-02-02|display-authors=etal}}</ref>
}}
{{Starbox detail
| age_gyr = 7.9<ref name="apj771_1_40"/>
| metal_fe = −0.06<ref name="apj771_1_40"/>
| mass = 1.12<ref name=apjss192_1_2/>
| radius = {{Val|1.9|0.1}}<ref name="Belle">{{cite journal | author=Gerard T. van Belle | author2=Kaspar von Braun | last-author-amp=yes | title=Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars | journal=The Astrophysical Journal | volume=694 | issue=2 | date=2009 | pages=1085–1098 | doi=10.1088/0004-637X/694/2/1085 | bibcode=2009ApJ...694.1085V|arxiv = 0901.1206 }} ([https://arxiv.org/abs/0901.1206 web Preprint])</ref>
| gravity = 3.58
| luminosity = {{Val|2.92|0.03}}<ref name="apj771_1_40"/>
| temperature = {{Val|5406|64|fmt=commas}}<ref name="apj771_1_40"/>
| rotational_velocity = 4.83<ref name=MartínezArnáiz2010>{{citation | display-authors=1 | last1=Martínez-Arnáiz | first1=R. | last2=Maldonado | first2=J. | last3=Montes | first3=D. | last4=Eiroa | first4=C. | last5=Montesinos | first5=B. | title=Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter | journal=Astronomy and Astrophysics | volume=520 | page=A79 | date=September 2010 | doi=10.1051/0004-6361/200913725 | postscript=. | bibcode=2010A&A...520A..79M | arxiv=1002.4391 }}</ref>
}}
{{Starbox catalog
|names = {{odlist | F=70 Vir | BD=+14°2621 | GJ=512.1 | HD=117176 | HIP=65721 | HR=5072 | SAO=100582 | WDS=13284+1347A }}
}}
{{Starbox reference
| Simbad = 70+Vir
| NSTED = 70+Vir
| ARICNS = 01056
| EPE = 70+Vir
}}
{{Starbox end}}
 
'''70 Virginis''' (disingkat70disingkat '''70 Vir''') adalah bintang kerdilkatai kuning yang berjarak sekitar 59 [[tahun cahaya]]<ref name="van Leeuwen2007"/> di [[Virgo|konstelasi Virgo]]. Bintang ini memiliki cahaya luar biasa cerah untuk jenis [[spektral]] dan mungkin baru mulai berkembang ke fase [[Raksasaraksasa merah]].
 
Pada tahun 1996, 70 Virginis diketahui memiliki planet yang beranama [[70 virginis beksoplanet]] yang mengorbit mengelilinginya.<ref name="Marcy1996"/> Ada juga piringan debu dengan suhu maksimum 153 [[Kelvin|K]] terletak pada jarak 3,4 [[Satuan astronomi|AU]] dari bintang.<ref name="Trilling2008"/>
 
== Sistem planet ==
Penemuan planet di sekeliling 70 Virginis diumumkan pada 17 Januari 1996 pada pertemuan [[American Astronomical Society]] di San Antonio, Texas. Planet itu terdeteksi menggunakan pengukuran [[kecepatan radial]] yang diambil dengan [[teleskop C. Donald Shane]] di [[Observatorium Lick]].<ref name="Marcy1996"/><ref name="berkeley"/>
{{OrbitboxPlanet begin
| table_ref = <ref name="Kane2015"/>
}}
{{OrbitboxPlanet
| exoplanet = [[70 Virginis b|b]]
| mass = {{val|7.40|0.02|p=>}}
| period = {{val|116.6926|0.0014}}
| semimajor = {{val|0.481|0.003}}
| eccentricity = {{val|0.399|0.002}}
}}
{{OrbitboxPlanet disk
| disk = Debu disc
| periapsis = >3.4
}}
{{Orbitbox end}}
 
== Referensi ==
{{reflist|refs=
 
<ref name=apjss192_1_2>{{citation | last1=Shaya | first1=Ed J. | last2=Olling | first2=Rob P. | title=Very Wide Binaries and Other Comoving Stellar Companions: A Bayesian Analysis of the Hipparcos Catalogue | journal=The Astrophysical Journal Supplement | volume=192 | issue=1 | page=2 |date=January 2011 | doi=10.1088/0067-0049/192/1/2 | bibcode=2011ApJS..192....2S |arxiv = 1007.0425 }}</ref>
 
<ref name="Strassmeier2017">{{cite arxiv | title=PEPSI deep spectra. II. Gaia benchmark stars and other M-K standards | last1=Strassmeier | first1=K. G. | last2=Ilyin | first2=I. | last3=Weber | first3=M. | class=astro-ph.EP | year=2017 | eprint=1712.06967 }}</ref>
 
<ref name="van Leeuwen2007">{{cite journal | title=Validation of the new Hipparcos reduction | url=https://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=65500 Vizier catalog entry ]</ref>
 
<ref name="apj771_1_40">{{citation
| display-authors=1
| last1=Boyajian | first1=Tabetha S. | last2=von Braun | first2=Kaspar
| last3=van Belle | first3=Gerard | last4=Farrington | first4=Chris
| last5=Schaefer | first5=Gail | last6=Jones | first6=Jeremy
| last7=White | first7=Russel | last8=McAlister | first8=Harold A.
| last9=ten Brummelaar | first9=Theo A. | last10=Ridgway | first10=Stephen
| last11=Gies | first11=Douglas | last12=Sturmann | first12=Laszlo
| last13=Sturmann | first13=Judit | last14=Turner | first14=Nils H.
| last15=Goldfinger | first15=P. J. | last16=Vargas | first16=Norm
| title=Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations
| journal=The Astrophysical Journal | volume=771 | issue=1
| id=40 | pages=31 | date=July 2013
| arxiv=1306.2974 | doi=10.1088/0004-637X/771/1/40
| bibcode=2013ApJ...771...40B | postscript=.
}}</ref>
 
<ref name="Marcy1996">{{cite journal | title=A Planetary Companion to 70 Virginis | url=http://iopscience.iop.org/article/10.1086/310096/fulltext/ | last1=Marcy | first1=Geoffrey W. | last2=Butler | first2=R. Paul | journal=The Astrophysical Journal Letters | volume=464 | issue=1 | pages=L147–L151 | date=1996 | bibcode=1996ApJ...464L.147M | doi=10.1086/310096 }}</ref>
 
<ref name="Trilling2008">{{cite journal | title=Debris Disks around Sun-like Stars | url=http://iopscience.iop.org/article/10.1086/525514/fulltext/ | last1=Trilling | first1=D. E. | last2=Bryden | first2=G. | last3=Beichman | first3=C. A. | last4=Rieke | first4=G. H. | last5=Su | first5=K. Y. L. | last6=Stansberry | first6=J. A. | last7=Blaylock | first7=M. | last8=Stapelfeldt | first8=K. R. | last9=Beeman | first9=J. W. | display-authors=1 | journal=The Astrophysical Journal | volume=674 | issue=2 | pages=1086–1105 | date=2008 | arxiv=0710.5498 | bibcode=2008ApJ...674.1086T | doi=10.1086/525514 }}</ref>
 
<ref name="berkeley">{{cite press release | title=Discovery of two new planets -- the second and third within the last three months -- proves they aren't rare in our galaxy | last=Sanders | first=Robert | date=January 17, 1996 | publisher=University of California, Berkeley | url=http://www.berkeley.edu/news/media/releases/96legacy/releases.96/14301.html | accessdate=December 22, 2017 }}</ref>
 
<ref name="Kane2015">{{cite journal | title=A Comprehensive Characterization of the 70 Virginis Planetary System | url=http://iopscience.iop.org/article/10.1088/0004-637X/806/1/60/meta | last1=Kane | first1=Stephen R. | last2=Boyajian | first2=Tabetha S. | last3=Henry | first3=Gregory W. | last4=Feng | first4=Y. Katherina | last5=Hinkel | first5=Natalie R. | last6=Fischer | first6=Debra A. | last7=Braun | first7=Kaspar von | last8=Howard | first8=Andrew W. | last9=Wright | first9=Jason T. | display-authors=1 | journal=The Astrophysical Journal | volume=806 | at=60 | year=2015 | arxiv=1504.04066 | bibcode=2015ApJ...806...60K | doi=10.1088/0004-637X/806/1/60 }}</ref>
 
}}
 
== Sumber ==
* [http://www.solstation.com/stars2/70virgin.htm :bintang 70 virginis]{{Pranala mati|date=Januari 2021 |bot=InternetArchiveBot |fix-attempted=yes }}
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{{Commonscat}}
 
{{DEFAULTSORT:70 Virginis}}
[[Kategori:konstelasi Virgo]]
[[Kategori:Bintang]]
[[Kategori:Rasi bintang Virgo]]
 
 
{{bintang-stub}}
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