| 词条 | 34 Boötis |
| 释义 |
epoch=J2000 | ra=14h 43m 25.3632s | dec= +26° 31′ 40.261″ | appmag_v=4.827 | constell=Boötes }}{{Starbox character | class=M3III | r-i = 1.22 | v-r = | b-v = 1.66 | u-b = 1.94 | variable=Semi-regular }}{{Starbox astrometry | radial_v=5.6 | prop_mo_ra=-13.29 | prop_mo_dec=-16.68 | parallax=3.67 | p_error=0.94 | absmag_v=-2.5}}{{Starbox detail| source={{cn|date=September 2017}} | mass=4.4 | radius=110 | luminosity=830 | temperature=3300 | metal= | gravity= | rotation= | age= }}{{Starbox catalog |{{Starbox reference|Simbad=HD+129712 }}{{Starbox end}} 34 Boötis or W Boötis is a star in the constellation Boötes. 34 Boötis is a M-type red giant with a mean apparent magnitude of +4.80. It is approximately 890 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +4.73 to +5.4 with a period of 450 days.[1] References1. ^{{cite web |title=34 Bootis, HD129712, HIP71995, HR5490 - Universe Guide |url=https://www.universeguide.com/star/34bootis |website=universeguide.com |accessdate=28 October 2018}}
External links
9 : Henry Draper Catalogue objects|Hipparcos objects|Flamsteed objects|Boötes|M-type giants|Semiregular variable stars|HR objects|Durchmusterung objects|Objects with variable star designations |
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