61 Cygni: Perbedaan antara revisi

Konten dihapus Konten ditambahkan
Tjmoel (bicara | kontrib)
k +kat
k →‎Pranala luar: clean up
 
(30 revisi perantara oleh 19 pengguna tidak ditampilkan)
Baris 3:
}}
{{Starbox image
| image=[[ImageBerkas:61 cygni map.png|250px]]
| caption=Expanded view of the star field around 61 Cygni. This system is located at the end of the arrow above.
}}
Baris 11:
| constell = [[Cygnus (constellation)|Cygnus]]
| component1 = 61 Cygni A
| ra1 = {{RA|21|06|53.9434}}
| ra1 = {{RA|21|06|53.9434}}<ref name="simbadA">{{cite web |url=http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+201091 |title=SIMBAD Query Result: V* V1803 Cyg -- Variable of BY Dra type |work=SIMBAD |publisher=Centre de Données astronomiques de Strasbourg |accessdate=2007-07-15 }} (61 Cygni A)</ref>
| dec1 = {{DEC|+38|44|57.898}}
| appmag_v1 = 5.21
Baris 20:
}}
{{Starbox character
| class=K5V<ref name="simbadA" /> / K7V
| b-v=+1.139 / +1.320<ref name="aass36">{{cite journal
| author=Blanco, C.; Marilli, E.; Catalano, S.
Baris 29:
| accessdate=2007-02-04 }}</ref>
| u-b=+1.155 / +1.242<ref name="aass36" />
| variable=A:&nbsp;[[BY Draconis variable|BY Draconis]]<ref name="simbadA" /><{{br />}}B:&nbsp;[[Flare star]]<ref name="simbadB" /> }}
{{Starbox astrometry
| radial_v=-64.3<ref name="simbadA" />/-63.5<ref name="simbadB" />
| prop_mo_ra=4156.93<ref name="simbadA" />/<{{br />}}&nbsp;4109.17
| prop_mo_dec=3259.39<ref name="simbadA" />/<{{br />}}&nbsp;3144.17
| parallax=287.18
| p_error=1.51
Baris 58:
| title=Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars
| journal=The Astrophysical Journal | volume=694 | issue=2
| pages=1085&ndash;10981085–1098 | year=2009
| doi=10.1088/0004-637X/694/2/1085 }}</ref>
| metal = [Fe/H] = -0.20<ref name="apj129">{{cite journal | author=Luck, R. Earle; Heiter, Ulrike | title=Stars within 15 Parsecs: Abundances for a Northern Sample | journal=The Astronomical Journal | year=2005 | volume=129 | issue=2 | pages=1063–1083 | url=http://adsabs.harvard.edu/abs/2005AJ....129.1063L | accessdate=2007-07-17 | doi = 10.1086/427250}}</ref>
Baris 65:
| title=Chromospheric Activity in G and K Main-Sequence Stars, and What It Tells Us about Stellar Dynamos
| journal=The Astrophysical Journal | volume=657 | issue=1
| pages=486&ndash;493486–493 | month=March | year=2007
| doi=10.1086/510482 }}</ref>
| age = <!-- See below -->
Baris 89:
| title=Sixth Catalog of Orbits of Visual Binary Stars
| publisher=U.S. Naval Observatory
| accessdate=2008-07-12}}</ref>
| archive-date=2009-04-12
| archive-url=https://web.archive.org/web/20090412084731/http://ad.usno.navy.mil/wds/orb6.html
| url-status=dead
}}</ref>
| name=61 Cygni B
| period=678&nbsp;&plusmn;±&nbsp;34
| axis=24.272&nbsp;&plusmn;±&nbsp;0.592
| eccentricity=0.49&nbsp;&plusmn;±&nbsp;0.03
| inclination=51&nbsp;&plusmn;±&nbsp;2
| node=178&nbsp;&plusmn;±&nbsp;2
| periastron=1709&nbsp;&plusmn;±&nbsp;16
| periarg=149&nbsp;&plusmn;±&nbsp;6
}}
{{Starbox catalog
Baris 115 ⟶ 119:
[[Harvard Revised catalogue|HR 8085]],
[[Bonner Durchmusterung|BD+38°4343]],
[[Luyten Half-Second catalogue|LHS 62]]
<ref name="simbadA" />
 
;61 Cyg B
Baris 123 ⟶ 126:
[[Harvard Revised catalogue|HR 8086]],
[[Bonner Durchmusterung|BD+38°4344]],
[[Luyten Half-Second catalogue|LHS 63]]
<ref name="simbadB" />
 
}}
{{Starbox end}}
'''61 Cygni''' merupakan [[bintang ganda]] di rasi [[Cygnus]]. Bintang ini terdiri dari dua [[bintang katai]] tipe K (''K-type dwarf'') yang saling mengorbit. 61 Cygni adalah salah satu bintang yang menarik untuk diteliti oleh para astronom. Pada tahun 1838, [[Friedrich Wilhelm Bessel]] mengukur jarak antara keberadaanya dengan [[Bumi]], dan menghasil angka sekitar 10.4&nbsp;[[tahun cahaya]], lebih dekat daripada hasil yang diperoleh pada pengujian terakhir (11.4 [[tahun cahaya]]).<ref name="Bessel">{{cite web
 
'''61 Cygni''' merupakan [[bintang ganda]] di rasi [[Cygnus]]. Bintang ini terdiri dari dua [[bintang katai]] tipe K (''K-type dwarf'') yang saling mengorbit.
 
61 Cygni adalah salah satu bintang yang menarik untuk diteliti oleh para astronom. Pada tahun 1838, [[Friedrich Wilhelm Bessel]] mengukur jarak antara keberadaanya dengan [[Bumi]], dan menghasil angka sekitar 10.4&nbsp;[[tahun cahaya]], lebih dekat daripada hasil yang diperoleh pada pengujian terakhir (11.4 [[tahun cahaya]])<ref name="Bessel">{{cite web
| author=Frommert, Hartmut; Kronberg, Christine
| title=Friedrich Wilhelm Bessel | publisher=Students for the Exploration and Development of Space
| url=http://www.seds.org/MESSIER/xtra/Bios/bessel.html
| accessdate=2009-04-03 }}</ref>. Setelah berbagai pengujian pada abad keduabelas, beberapa pelanet dilaporkan mengelilingi bintang ini, namuntetapi sejauh ini pernyataan tersebut belum teruji<ref name="Walker1995">{{cite journal
| author=Walker, G. A. H.; Walker, A. R.; Irwin, A. W.; Larson, A. M.; Yang, S. L. S.; Richardson, D. C
| year=1995 | title=A search for Jupiter-mass companions to nearby stars | journal=Icarus | volume=116 | issue=2
| pages=359&ndash;375359–375 | doi=10.1006/icar.1995.1130 }}</ref><ref name="Cumming1999">{{cite journal
| author=Cumming, A.; Marcy, G. W.; Butler, R. P.
| year=1999 | title=The Lick planet search: detectability and mass thresholds | doi=10.1086/308020
| journal=Astrophysical Journal | volume=526
| pages=890&ndash;915890–915
}}</ref><ref name="Wittenmyer2006">{{cite journal
| author=Wittenmyer, R. A.; Endl, M.; Cochran, W.D.; Hatzes , A.; Walker, G. A. H.; Yang, S. L. S.; Paulson, D. B.
| year=2006 | title=Detection limits from the McDonald Observatory planet search program
| journal=Astronomical Journal | volume=132
| pages=177&ndash;188177–188 | doi=10.1086/504942 }}</ref> To date, no planets have been confirmed in this system and all of the past claims are now considered spurious.
 
== Etimologi ==
 
Bintang ini disebut juga '''Bintang Bessel (Bessel's Star)'''<ref>{{cite book
| first=Anton | last=Pannekoek | year=1989
| title=A History of Astronomy
| url=https://archive.org/details/historyastronomy00pann|publisher=Courier Dover Publications | pages=[https://archive.org/details/historyastronomy00pann/page/343 343]
| isbn=0486659941 }}</ref> atau '''Piazzi's Flying Star''',<ref name=hirshfeld>{{cite book
| first=Alan | last=Hirshfeld | year=2001
| title=Parallax: The Race to Measure the Cosmos
| publisher=Macmillan | isbn=0716737116 }}</ref>
 
Selain [[rasi]] [[Cygnus]], bintang ini juga merupakan anggota dari kelompok berikut :
 
{| class="wikitable"
Baris 175 ⟶ 174:
| year=1959 | volume=79 | pages=135–39
| url=http://adsabs.harvard.edu/abs/1959Obs....79..135E
| accessdate=2007-07-17 }} – Gives space velocity components of U=+94, V=-53 and W=-7 for HD 201091/2.</ref>|| || ||(antara lain) : [[31 Aquilae|31 Aql]], [[HD 131111]], [[HD 3443]], [[Beta Columbae|β Col]], [[Pi Mensae|π Men]], [[HD 142]], [[HD 55526]], [[14 Tauri|14 Tau]], [[HD 150275]], [[68 Virginis|68 Vir]], [[HD 53501]]
|}
 
== Referensi ==
{{reflist|2}}
 
== Pranala luar ==
* {{cite web
| title=61 Cygni 2
Baris 187 ⟶ 186:
| publisher = SolStation
| accessdate = 2007-07-16 }}
* {{cite web | last = Kaler | first = James B. | title = 61 Cygni | url = http://www.astro.uiuc.edu/~kaler/sow/61cyg.html | publisher = [[University of Illinois at Urbana-Champaign]] | accessdate = 2007-07-16 | archive-date = 2007-07-07 | archive-url = https://web.archive.org/web/20070707012512/http://www.astro.uiuc.edu/~kaler/sow/61cyg.html | dead-url = yes }}
* {{cite web
 
| last = Kaler | first = James B. | title=61 Cygni
{{Commonscat}}
| url = http://www.astro.uiuc.edu/~kaler/sow/61cyg.html
| publisher =[[University of Illinois at Urbana-Champaign]]
| accessdate = 2007-07-16 }}
 
[[Kategori:Rasi bintang Cygnus]]
 
 
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