
21 vulpecula

21 valpekula valpekula key uttari nakshatr mein ack ekal, safed rung kaa taaraa haye. isaki doori kaa anuman vaarshik parlax shift seey lagaaya jaa sakata haye, jisase 313 prakaash varsh kaa prithakkaran hotaa haye. yeh taaraa raat mein nagna aankho seey dikhaai detaa haye, jiska drishya parimaan 5.19 haye. yeh lagbhag 7 kimmy/sekand key suryakendriya radial wegg key saath aage badh rhaa haye, joe lagbhag 4.2 laakh saal pahale aaya thaa.
iss taare key varg key baare mein kuchh asahamati haye. kauli aur anya. (1969) ney ise aeye7 ivon key taarakiya vargeekaran key saath ack prakaar key upa-daitya taare key roop mein soochibaddh kiya, jahaan 'aine' sanketan teji seey ghoornan key kaaran "aspasht" rekhaaon koo ingit kartaa haye. IV key luminocity varg seey pataa chalata haye kii taaraa apane mool mein hydrogen kii aapoorti samaapt curr chuka haye aur mukhya anukram seey door vikasit hoe rhaa haye. slatebuck (1982) ney ise ack aeye5-IV shale starr key roop mein vargeekrit kiya aur ise huck aind jaishek (2000) dwara maanaa gayaa, jabaki ebt aind morel (1995) ney ise aeye5 vn key varg key saath soochibaddh kiya, joe ack teji seey ghoomane vaale aeye-prakaar key mukhya-anukram starr kaa sanket detaa haye. yeh ack delta scooty prakaar kaa charr taaraa haye, jisamen 0.1881 dinon kii pramukh spandan avadhi aur parimaan mein 0.016 kaa ayam haye.
david aur hillenbrand (2015) ney iss taare key liye soorya key dravyamaan kaa 1.61 gunaa ausat dravyamaan paaya, jabaki zorek aur royer (2012) ney soorya key dravyamaan kaa bahut adhik dravyamaan anuman soochibaddh kiya. yeh lagbhag 35.6 karod varsh purana haye aur iska anumaanit ghoornan wegg 222 kimmy/sekand haye. yeh teji seey ghoornan taare koo ack bhoomadhyarekhiya ubhaar key saath ack oblet aakar dey rhaa haye joe dhruviya trijya seey anumaanit 16 pratishat badaa haye. 1997 key baad seey tippaniyon seey pataa chalata haye kii 21 wall mein gaisiya samagri kii ack parikrama karane vaali disk haye joe ise ack khol taaraa banaane key liye bhoomadhya rekha mein seemit haye. iss disk seey line kii taakat samay key saath cumm hoe rahee haye.

