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Arktur - Povijest promjena
2026-07-15T22:08:22Z
Povijest promjena ove stranice na wikiju
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WikiSysop: bnz
2022-05-07T13:18:13Z
<p>bnz</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">←Starija inačica</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Inačica od 7. svibanj 2022. u 13:18</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><!--'''Arktur'''--></del>{{Starbox begin |</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{Starbox begin |</div></td></tr>
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WikiSysop
https://enciklopedija.cc/index.php?title=Arktur&diff=18593&oldid=prev
WikiSysop: Bot: Automatski unos stranica
2021-07-28T22:27:34Z
<p>Bot: Automatski unos stranica</p>
<p><b>Nova stranica</b></p><div><!--'''Arktur'''-->{{Starbox begin |<br />
name=Arktur }}<br />
{{Starbox image |<br />
image=[[Datoteka:Bootes constellation map.png|250px]] |<br />
caption=Arktur u zviježđu [[Volar]] }}<br />
{{Starbox observe |<br />
epoch=J2000 |<br />
constell=[[Volar]] |<br />
ra=14h 15m 39.7s |<br />
dec=+19° 10' 56" |<br />
appmag_v=&minus;0.05 }}<br />
{{Starbox character |<br />
class=K1.5 IIIpe |<br />
b-v=1.22 |<br />
u-b=1.27 |<br />
variable=''Suspected'' }}<br />
{{Starbox astrometry |<br />
radial_v=&minus;5.3 |<br />
prop_mo_ra=&minus;1093.45 |<br />
prop_mo_dec=&minus;1999.40 |<br />
parallax=88.78 |<br />
p_error=0.68 |<br />
dist_ly=36.7 |<br />
dist_pc=11.26 |<br />
absmag_v=&minus;0.38 }}<br />
{{Starbox detail|<br />
age=> 4.6 × 10<sup>9</sup> |<br />
metal=17&ndash;32% Sun |<br />
mass=1&ndash;1.5 |<br />
radius=24.5 |<br />
rotation= |<br />
luminosity=> 110 |<br />
temperature=4,300 }}<br />
{{Starbox catalog |<br />
names=Alramech, Abramech, α Boötis, 16 Boötes, [[Henry Draper catalogue|HD]] 124897, [[Harvard Revised catalogue|HR]] 5340, [[Bonner Durchmusterung|BD]]+19°2777, [[General Catalogue of Trigonometric Parallaxes|GCTP]] 3242.00, [[Gliese-Jahreiss catalogue|GJ]] 541, [[Luyten Half-Second catalogue|LHS]] 48 i [[Hipparcos Catalogue|HIP]] 69673. }}<br />
{{Starbox end}}<br />
'''Arktur''' ili '''Arcturus''' (&alpha; Bootes) je najsjajnija [[zvijezda]] sjevernog neba u zviježđu [[Volar]]. Uočljiva u proljeće. [[Prividni sjaj]] Arktura je - 0,04. <br />
<br />
Nebeske koordinate su: R/A: 14h 15´ 39,7˝ &nbsp; &nbsp; DEC.: 19° 10´ 57˝.<br>Apsolutne veličine -0,33 sjajniji je od [[Sunce|Sunca]] 115 puta, i udaljen 36 [[svjetlosna godina|svjetlosnih godina]] od nas. Narančasta zvijezda površinske temperature 4300°K. Div spektralnog tipa K2, mase 1,5 puta veće od Sunca i promjera 24,5 puta većeg od Sunca.<br />
<br />
<!-- ???:<br />
Tri sjajne zvijezde: [[Vega]], Arctur i [[Capella]] djele sjeverni dio neba na trećine.<br />
--><br />
U njegovoj jezgri je prestala fuzija [[vodik]]a. Pretpostavlja se da je već počela [[fuzija]] [[helij]]a u [[ugljik]].<br />
<br />
== Vanjska poveznice ==<br />
* [http://epsilon-lyrae.de/Spektroskopie/Sternspektren/Arcturus.html Spektar zvijezde Arktur]<br />
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[[Kategorija: Zvijezde]]<br />
[[Kategorija:Volar]]</div>
WikiSysop