Eta Cassiopeiae: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
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k →Pranala luar: pembersihan kosmetika dasar |
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{{Starbox begin
'''Eta Cassiopeiae (η Cas / η Cassiopeiae)'' merupakan [[bintang ganda]] yang berada di [[rasi]] [[Cassiopeia]]. [[Bintang]] utama pada sistem η Cassiopeiae adalah [[bintang katai]] kuning (''yellow dwarf main sequence'') dengan tipe G0V, hampir sama dengan tipe dari [[Matahari]]. [[Bintang]] ini memiliki [[magnitudo]] 3.46. Komponen lainnya adalah [[bintang]] dengan [[magnitudo]] 7.51 adalah jenis [[bintang katai]] berwarna jingga dengan tipe K7V. ▼
| name=Eta Cassiopeiae A/B }}
{{Starbox observe
| epoch=J2000
| constell=[[Cassiopeia (constellation)|Cassiopeia]]
| ra={{RA|00|49|06.2912}}<ref name=SIMBAD>{{cite web
| url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=V*+eta+Cas
| title=SIMBAD query result: V* eta Cas -- Spectroscopic binary
| publisher=Centre de Données astronomiques de Strasbourg
| accessdate=2008-04-10 }}</ref>
| dec={{DEC|+57|48|54.674}}<ref name=SIMBAD/>
| appmag_v=3.45/7.51<ref name=aaa338>{{cite journal
| last=Fernandes | first=J.
| coauthors=Lebreton, Y., Baglin, A., Morel, P.
| title=Fundamental stellar parameters for nearby visual binary stars: eta Cas, XI Boo, 70 OPH and 85 Peg
| journal=Astronomy and Astrophysics
| year=1998 | volume=338 | pages=455–464
| url=http://adsabs.harvard.edu/abs/1998A&A...338..455F
| accessdate=2008-04-10 }}</ref> }}
{{Starbox character
| class=G0V/K7V<ref name=aaa338/>
| b-v=0.57/1.39
| u-b=0.02/1.03
| variable=[[RS Canum Venaticorum variable|RS CVn]] }}
{{Starbox astrometry
| radial_v=+10.0±0.1<ref name=SIMBAD/>
| prop_mo_ra=1087.07<ref name=SIMBAD/>
| prop_mo_dec=−559.73<ref name=SIMBAD/>
| parallax=167.99
| p_error=0.62
| parallax_footnote=<ref name=SIMBAD/>
| absmag_v=4.59/8.64 }}
{{Starbox visbin
| reference=<ref>{{cite journal
| last=Strand | first=K. A.
| title=The orbit of Eta Cassiopeiae
| journal=Astronomical Journal
| year=1969 | volume=74 | pages=760–763
| url=http://adsabs.harvard.edu/abs/1969AJ.....74..760S
| accessdate=2008-04-10
| doi=10.1086/110853 }}</ref>
| name=η Cas B
| period=480
| axis=11.9939
| eccentricity=0.497
| inclination=34.76
| node=98.42
| periarg=88.59
| periastron=1889.6 }}
{{Starbox detail
| age=
| metal=[Fe/H] = −0.031<ref name=aaa338/>
| mass=0.95/0.62<ref name=aaa338/>
| radius=1.01/0.66<ref>{{cite journal
| last=Johnson | first=H. M. | coauthors=Wright, C. D.
| title=Predicted infrared brightness of stars within 25 parsecs of the sun
| journal=Astrophysical Journal Supplement Series
| year=1983 | volume=53 | pages=643–711
| url=http://adsabs.harvard.edu/abs/1983ApJS...53..643J
| accessdate=2008-04-16
| doi=10.1086/190905 }}—see p. 647.</ref>
| rotation=6 km/s<ref name=aaa338/>
| luminosity=1.29/0.06<ref name=aaa338/>
| temperature=6,087/4,036<ref name=aaa338/> }}
{{Starbox catalog
| names=Achird, [[Bayer designation|η Cas]] 24 Cassiopeiae, [[Gliese-Jahreiss catalogue|GJ]] 34, [[Harvard Revised catalogue|HR]] 219, [[Bonner Durchmusterung|BD]]+57°150, [[Henry Draper catalogue|HD]] 4614, [[General Catalogue of Trigonometric Parallaxes|GCTP]] 155, [[Luyten Half-Second catalogue|LHS]] 123/122, [[Luyten Five-Tenths catalogue|LFT]] 74, [[Luyten Two-Tenths catalogue|LTT]] 10287, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 21732, Wolf 24, Struve 60, [[Hipparcos catalogue|HIP]] 3821, GC 962, [[Star catalogue#ADS|ADS]] 671, CCDM J00491+5749<ref name=SIMBAD/> }}
{{Starbox end}}
▲'''Eta Cassiopeiae (η Cas / η Cassiopeiae)''' merupakan [[bintang ganda]] yang berada di [[rasi]] [[Cassiopeia]]. [[Bintang]] utama pada sistem η Cassiopeiae adalah [[bintang katai]] kuning (''yellow dwarf main sequence'') dengan tipe G0V, hampir sama dengan tipe dari [[Matahari]]. [[Bintang]] ini memiliki [[magnitudo]] 3.46.
== Etimologi ==
Kadang-kadang, bintang ini disebut dengan nama tradisionalnya, yaitu '''Achird'''. Nama ini berasal dari
{| class="wikitable"
Baris 11 ⟶ 78:
! arti
|-
| 王良三|| [[China]] || [[bintang]] ketiga pada [[rasi]] [[Daftar asterisme di Kaki#Wang Liang
|-
| Borealior ipsa et est in cingulo (Almagest)|| [[Bahasa Latin|Latin]] || yang berada di utara ikat pinggang (sang ratu)<ref>http://www.atlascoelestis.com/alsufi%2010.htm</ref>
|}
== Referensi ==
{{reflist}}
== Pranala luar ==
* {{cite web
| title=Eta Cassiopeiae 2 | work=SolStation
| url=http://www.solstation.com/stars/eta-cass.htm |
| accessdate=2005-11-03 }}
* {{cite web | last=Kaler | first=Jim | title=Achird | url=http://www.astro.uiuc.edu/~kaler/sow/achird.html | publisher=University of Illinois at Urbana-Champaign | accessdate=2008-04-10 | archive-date=2008-05-17 | archive-url=https://web.archive.org/web/20080517082912/http://www.astro.uiuc.edu/%7Ekaler/sow/achird.html | dead-url=yes }}
[[Kategori:Rasi bintang Cassiopeia]]
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