| 词条 | 3 Centauri |
| 释义 |
| name = 3 Centauri }}{{Starbox observe | epoch = J2000.0 | constell = Centaurus | ra = {{RA|13|51|49.60}} | dec = {{DEC|−32|59|38.7}} | appmag_v = +4.56/+6.06 }}{{Starbox character | class = B5IIIp/B8V | b-v = −0.13 | u-b = −0.60 | variable = eclipsing binary? }}{{Starbox astrometry | radial_v = +10 | prop_mo_ra = -34.54 ± 0.78 | prop_mo_dec = -28.21 ± 0.62 | parallax = 9.49 | p_error = 0.89 | parallax_footnote = | absmag_v = −0.23/+1.27 }}{{Starbox catalog | names = k Centauri, V983 Centauri, HR 5210/5211, HD 120709/120710, CD−32°9676, HIP 67669, SAO 204916/204917, GC 18724/18725, CCDM J13518-3300}}{{Starbox reference | Simbad = HD+120709 }}{{Starbox end}} 3 Centauri is a binary star in the constellation Centaurus. It is approximately 340 light years from Earth. The primary component, 3 Centauri A, is a blue-white B-type giant with a mean apparent magnitude of +4.56. It is a variable star, and its brightness varies from magnitude +4.27 to +4.32 It is suspected the variations in luminosity are a result of the primary being an eclipsing binary, which would mean the system would consist of at least three objects. Its more distant companion, 3 Centauri B, is located 7.9 arcseconds away. It is a blue-white B-type main sequence dwarf and has an apparent magnitude of +6.06. ReferencesVizier catalog entry}}{{Stars of Centaurus}}{{Var-star-stub}}{{Multi-star-stub}} 11 : Triple star systems|B-type main-sequence stars|B-type giants|Centaurus (constellation)|Eclipsing binaries|Bayer objects|Flamsteed objects|HR objects|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects |
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