Lihat sumber Alpha Doradus

{{Starbox 2
|name = Alpha Doradus
|image = <div style="position: relative">[[Berkas:Dorado IAU.svg|250px]]
     <div style="position: absolute; left: 56.6%; top: 31.5%;">[[Berkas:Cercle rouge 100%.svg|12px]]</div>
     </div>
|caption = Lokasi α Doradus (lingkaran)
|epoch = [[J2000.0]]
|equinox = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
|constell = [[Dorado]]
|component_a = A
|component_b = B
|ra_a_h = 04
|ra_a_m = 33
|ra_a_s = 59.778
|dec_a_d = −55
|dec_a_m = 02
|dec_a_s = 41.91
|radec_a_footnote = <ref name=viziera/>
|ra_b_h = 04
|ra_b_m = 33
|ra_b_s = 59.782
|dec_b_d = −55
|dec_b_m = 02
|dec_b_s = 42.39
|radec_b_footnote = <ref name=vizierb/>
|appmag_v_a=3.8<ref name=bsc2 />
|appmag_v_b=4.3<ref name=bsc2 />
|class_a = A0IIIp<ref name=bsc2 />
|class_b = B9IV<ref name=bsc2 />
|u-b_system = −0.35<ref name=bsc2/>
|b-v_system = −0.10<ref name=bsc2 />
|r-i_system = −0.09<ref name=bsc2 />
|variable_a = [[Alpha² Canum Venaticorum variable|ACV]]<ref name=gcvs1 />
|radial_v_a = {{nowrap|25.6 ± 0.9}}<ref name=sb0 />
|prop_mo_ra_a = 58.06<ref name=viziera />
|prop_mo_dec_a = 12.73<ref name=viziera />
|prop_mo_ra_b = 42.83<ref name=vizierb />
|prop_mo_dec_b = 12.94<ref name=vizierb />
|parallax = 19.34
|p_error = 0.31
|parallax_footnote = <ref name=aaa474_2_653/>
|absmag_v=–0.38 <small>(dikombinasikan)</small><ref>Dari magnitudo semu dan paralaks.</ref>
|mass_a={{nowrap|3.33 ± 0.10}}<ref name=aaa334_181/>
|mass_b=2.7<ref name=kaler />
|luminosity_bolometric_a=195<ref name=aaa334_181/>
|luminosity_bolometric_b=70<ref name=kaler />
|gravity_a={{nowrap|4.02 ± 0.07}}<ref name=aaa334_181/>
|radius_a={{nowrap|3.5 ± 0.3}}<ref name=aaa334_181/>
|radius_b=1.9<ref name=kaler />
|temperature_a=11,588<ref name=aaa334_181/>
|temperature_b=12,200<ref name=kaler />
|rotation_a=2.94&nbsp;days<ref name=aaa334_181/>
|orbit_footnote=<ref name=orb/>
|period_unitless=12.1&nbsp;y
|axis_unitless=0.18[[arcsecond|″]]
|periastron=[[Epoch (astronomy)|B]]1986
|inclination=31
|node=140
|eccentricity=0.80
|periarg=193
|names=α&nbsp;Dor, Alpha&nbsp;Doradus, Alpha&nbsp;Dor, [[Double star designation|B 2092]], [[Catalog of Components of Double and Multiple Stars|CCDM]]&nbsp;J04340-5503AB, [[Durchmusterung|CD]]−55&nbsp;916, [[Durchmusterung|CPD]]−55&nbsp;663, [[Fifth Fundamental Catalogue|FK5]]&nbsp;171, [[Boss General Catalogue|GC]]&nbsp;5600, [[Henry Draper Catalogue|HD]]&nbsp;29305, [[Hipparcos Catalogue|HIP]]&nbsp;21281, [[Bright Star Catalogue|HR]]&nbsp;1465, [[Index Catalogue of Visual Double Stars|IDS]]&nbsp;04318-5515&nbsp;AB, [[PPM Star Catalogue|PPM]]&nbsp;333592, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]]&nbsp;233564, [[Washington Double Star Catalog|WDS]]&nbsp;04340-5503AB.<ref name=sb0 />
|simbad_system=alp+dor}}

'''Alpha&nbsp;Doradus''' ('''Alpha&nbsp;Dor''', '''α&nbsp;Doradus''', '''α&nbsp;Dor''') adalah bintang paling terang yang ad di [[rasi bintang]] [[Dorado]]. Dengan menggunakan sistem [[paralaks]], jarak ke bintang ini dihitung sebesar {{Convert|169|ly|pc|abbr=off|lk=on}}.<ref name=aaa474_2_653/>

Bintang ini merupakan sistim [[bintang biner]]<ref name=kaler /> dengan [[magnitudo semu]] bervariasi dari 3.26 - 3.30,<ref name=gcvs1/> membuatnya menjadi bintang biner yang paling terang.<ref name=ob104_88/>

==Referensi==
{{Reflist|refs=

<ref name=viziera>[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/239/h_dm_com&recno=4251 HIP 21281, record for component 1], [[Hipparcos catalogue]]; [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?I/239 I/239].</ref>

<ref name=vizierb>[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/239/h_dm_com&recno=4252 HIP 21281, record for component 2], [[Hipparcos catalogue]]; [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?I/239 I/239].</ref>

<ref name=bsc2>[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=1465 HR 1465], database entry, The Bright Star Catalogue,  5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., [[Centre de Données astronomiques de Strasbourg|CDS]] ID [http://vizier.u-strasbg.fr/viz-bin/Cat?V/50 V/50].  Accessed on line September 3, 2008.</ref>

<ref name=aaa474_2_653>{{cite journal | title=Validation of the new Hipparcos reduction | last=van Leeuwen | first=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | month=November | year=2007 | pages=653–664 | doi=10.1051/0004-6361:20078357 | bibcode=2007A&A...474..653V |arxiv = 0708.1752 }}</ref>

<ref name=sb0>{{SIMBAD link|alp+dor|V* alf Dor -- Variable Star}}, database entry, [[SIMBAD]].  Accessed on line September 3, 2008.</ref>

<ref name=orb>{{citation | title=Entry 04340-5503 | url=http://ad.usno.navy.mil/wds/orb6/orb6orbits.txt | work=Sixth Catalog of Orbits of Visual Binary Stars | publisher=[[United States Naval Observatory]] | accessdate=2008-09-03 }}</ref>

<ref name=kaler>{{citation | url=http://stars.astro.illinois.edu/sow/alphador.html | title=Alpha Dor | first1=James B. | last1=Kaler | title=Stars'' | accessdate=2012-03-04 }}</ref> 

<ref name=gcvs1>alf Dor, database entry, [http://www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/iii.dat The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars], Sternberg Astronomical Institute, Moscow, Russia.  Accessed on line September 3, 2008.</ref>
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<ref name=wds>{{citation | title=Entry 04340-5503, discoverer code HJ3668, components AB-C | url=http://ad.usno.navy.mil/wds/wdsnewframe1.html | work=The Washington Double Star Catalog | publisher=[[United States Naval Observatory]] | accessdate=2008-09-03 }}</ref>
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<ref name=ob104_88>{{citation | last1=Heintz | first1=W. D. | title=Note on the orbit of alpha Doradus | journal=The Observatory | volume=104 | pages=88–89 | month=April | year=1984 | bibcode=1984Obs...104...88H }}</ref>

<ref name=aaa334_181>{{citation | last1=North | first1=P. | title=Do SI stars undergo any rotational braking? | journal=Astronomy and Astrophysics | volume=334 | pages=181–187 | month=June | year=1998 | bibcode=1998A&A...334..181N |arxiv = astro-ph/9802286 }}</ref>

}}


[[Kategori:Astronomi]]