Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: BY Draconis tsarin taurari ne da yawa a cikin tauraron Draco, wanda ya ƙunshi aƙalla abubuwa uku. Abubuwa A da B sune manyan taurari masu jerin gwano, kuma suna samar da tsarin tauraron dan adam mai kusa tare da ɗan gajeren lokacin zagaye na kwanaki 5.98 kawai. Rukunin su na mutum shine dK5e da dK7e. Suna samar da samfurin aji na taurari masu canji da aka sani da BY Draconis masu canji. Kashi na uku (C) shine, ta hanyar kwatantawa, an raba shi da yawa daga nau'in A-B ta hanyar tazarar tazarar 17 arcseconds, wanda ya dace da 260 AU a kimanin nesa na wannan tsarin tauraron <unk> inda AU shine matsakaicin nisa daga Duniya zuwa Sun. Sashe na C shine tauraron dan tsirara mai launin ja M5. Wataƙila akwai kashi na huɗu ga tsarin, yana kewayawa tare da lokacin ≤1000-day, wanda ke da alhakin eccentricity na 5.98-day orbit, amma wannan ba a tabbatar da gani ba. Canjin BY Draconis ya haifar da aiki a cikin tauraron tauraron da ake kira starspots, waɗanda suke kwatankwacin sunspots a kan Sun, a haɗe tare da saurin juyawa wanda ke canza kusurwar kallon aikin dangane da mai kallo. Wannan canjin yana da matsakaicin lokaci na kwanaki 3.8285, amma hasken kuma yana canzawa a cikin shekaru da yawa<unk> dangane da matakin aikin farfajiyar. Yawancin masu sa ido sun yi imanin cewa tauraron farko (A) yana da alhakin canjin canji yayin da na biyu ke samar da kashi ɗaya bisa uku na jimlar haske daga tsarin. Duk da haka, spots na iya faruwa a kan taurari biyu. Ba kamar Rana ba, waɗannan tabo na iya faruwa a yankunan polar na taurari.  Tambaya: Yaya tsawon lokacin da taurari ke da yawa a cikin BY Draconis?
5.98 kwanaki