Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Wannan babban tauraro ne tare da rarrabawar tauraron K4 III. Ya fi hasken rana haske sau 130. Kochab ya kai wani matsayi a cikin juyin halittarsa inda murfin waje ya faɗaɗa zuwa sau 42 na kewayon Rana. Wannan yanayin da aka faɗaɗa yana haskaka haske sau 390 fiye da na Rana daga yanayin ta na waje a zafin jiki mai tasiri na 4,030 K. Wannan zafin yana ba tauraron haske mai launin ruwan hoda na tauraron K-type. Ta hanyar tsara wannan tauraron bisa ga hanyoyin juyin halitta, za a iya kimanta yawan wannan tauraron a matsayin 2.2 ± 0.3 na Rana. Kimanin taro ta amfani da radius na wannan tauraron da aka auna ta hanyar tsaka-tsakin da kuma nauyinta na farfajiyar da aka ƙayyade ta hanyar hasken rana ya ba da nauyin hasken rana 2.5 ± 0.9. An san cewa tauraron yana fuskantar sauye-sauye na lokaci-lokaci a cikin haske a cikin kimanin kwanaki 4.6, tare da mitar astroseismic dangane da mahimmancin tauraron. Daga wannan, an sami ƙididdigar ƙananan ƙididdigar 1.3 ± 0.3 na hasken rana.  Tambaya: Menene rarrabuwa ta taurari na taurari mai girma?
K4 na uku