
beeta urse majoris

beeta urse majoris (β urse majoris, sankshipt roop seey beeta umaa, β umaa), aupchaarik roop seey merak naam diyaa gayaa, ursa mejar key uttari nakshatr mein ack taaraa haye.
iss taare kaa drishya parimaan + 2.37 haye, jiska arth haye kii yeh nangi aankho seey aasaani seey dikhaai detaa haye. yeh uttari golardh key paryavekshakon key liye badey dipper mein "soochak sitaaron" mein seey ack key roop mein adhik parichit haye, yaa hull (yuke), joe saat sitaaron kaa ack pramukh tarankan haye joe badey nakshatr kaa hissa haye. iss taare seey paas key alfa urse majoris (dube) key madhyam seey ack kaalpanik seedhi rekha kaa vistaar dhruviya, uttari taare taka faila huaa haye.
varnakramiya vargeekaran.
1943 mein, β urse majoris koo a1 v key varg key liye ack varnakramiya maanak key roop mein soochibaddh kiya gayaa thaa. jaba behtar upkaranon ney praarambhik aeye-shreni key sitaaron key liye upa-vishaalata prakaash vargon kii pehchaan karna sambhav banaa diyaa, tou β ürsee majoris koo vaha varg a0 IV saunpa gayaa thaa. ise baad mein sanshodhit curr key aeye1 IV curr diyaa gayaa. ise ack halka aim taaraa maanaa jaataa haye, joe kuchh dhaatu tatvon kii asamanya roop seey majboot rekhaaon key saath ack prakaar kaa rasayanik roop seey vishisht taaraa haye.
sampattiyan.
paralax maap key aadhar parr, β urse majoris soorya seey kuchh doori parr sthit haye. yeh ack upa-grah haye, ack taaraa jisane apane mool mein hydrogen koo samaapt curr diyaa haye aur abb thandaa hoe rhaa haye kyonki yeh mool key baahar ack khol mein hydrogen key thermonuclear sanlayan key madhyam seey oorjaa utpann kartaa haye. baahari lifafe kaa prabhaavi tapman lagbhag 9,225 key haye, joe ise ack safed rung kii chamak detaa haye joe aeye-prakaar key sitaaron key liye vishisht haye. yeh soorya seey badaa haye, jiska dravyamaan lagbhag 2.7 gunaa aur saur trijya seey 2.84 gunaa haye. yadi unhein samaan doori seey dekhaa jaataa haye, tou beeta urse majoris soorya kii tulanaa mein bahut adhik chamkila dikhaai dega, kyonki yeh soorya kii chamak kaa 68 gunaa vikiran curr rhaa haye.
avarakt mein taare key avalokan seey ack atirikt utsarjan kaa pataa chalata haye joe parikrama karane vaali dhool kii ack paristhitijanya malabe kii disk kii upasthiti kaa sujhaav detaa haye, jaisa kii fomalhat aur vega key aspas paaya gayaa thaa. iss disk kaa ausat tapman 120 k haye, joe darshaata haye kii yeh mezban taare seey 47 aeu kii trijya parr kendrit haye. dhool kaa anumaanit dravyamaan prithvi key dravyamaan key lagbhag 0.27% haye.
beeta urse majoris badey dipper mein paanch sitaaron mein seey ack haye joe ack khule khule samooh kaa ack hissa haye jise ursa pramukh gatishil samooh kahaa jaataa haye, joe antariksh key ack hii kshetra koo saajha kartaa haye aur naa kii prithvi key drishtikon seey akash kaa ack hii patch. iss samooh kii anumaanit ayu lagbhag 500 (±100 million varsh) haye. choonki iss samooh key sadasya ack samaan utpatti aur antariksh key madhyam seey gati saajha karate hain, isaliye yeh beeta urse majoris kii ayu kaa anuman lagaata haye. dou taare apekshaakrit nikatata mein sthit honey key liye jaane jaate hainh 37 urse majoris aitt aur gaama urse majoris aitt; inn sitaaron kii tulanaa mein ack dusare key bahut karib prithvi key hain.
namkaran.
"β ürsee mégoris" (lattin mein "beeta ürsee mégoris") taare kaa bayer padnam haye.
iska paaramparik naam "merak" arabi shabd "all-marak" "cummer" "(bhalu kaa) seey liya gayaa haye. 2016 mein, antarrashtriya khagoliya sangh ney taaron key liye uchit naamon koo soochibaddh karane aur maankeekrit karane key liye taaron key naamon (doubleu. jee. aiss. aine.) parr ack kaary samooh kaa ayojan kiya. julaai 2016 key doubleu. jee. aiss. aine. key pahale bulletin mein doubleu. jee. aiss. aine. dwara anumodit naamon key pahale dou baichon kii ack talika shamil thee; jisamen iss taare key liye "merak" shamil thaa.
hinduon ney iss taare koo "pulaha" kahaa, joe saat rishiyon mein seey ack thaa.
cheeni mein, (), jiska arth haye "uttari dubki", badey dubki key barabar ack tarankan koo sandarbhit kartaa haye. natijatan, beeta urse majoris kaa cheeni naam (,) aur (,) haye.
sanskriti mein.
uss "merak" (1918) aur uss "merak" (af-21) donon sanyukt raajya america key nausena jahaaj hain.

