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Altayras

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Altayras
Altayras
Epocha J2000
Spektrinė klasė A7 IV-V
Rektascensija 19 h 50 min 47.0 s
Deklinacija +08° 52' 06"
Atstumas 16.72 šm
Regimasis ryškis (V) 0.77
Fizikinės charakteristikos
Masė 1.7 MS
Spindulys 1.8 RS
Spalva (B-V) 0.22
Spalva (U-B) 0.08
Absoliutinis ryškis (V) 2.22
Šviesis (V) 10.7 LS
Paviršiaus temperatūra 7550 K
Altayras žvaigždyne

Altayras (α Aql, Alpha Aquilae) – balta 8-a pagal ryškumą naktinio dangaus žvaigždė Erelio žvaigždyne. Lietuvoje matomas vasarą, kartu su Denebu bei Vega sudaro „Vasaros trikampį“. Viena artimiausių Saulei žvaigždžių.

Apsisukimo aplink ašį periodas: 6,5-10,4 valandų. Dėl greito sukimosi žvaigždė suplota: pusiaujo skersmuo 14 procentų didesnis už poliarinį skersmenį.

Arabų kalboje „an-nasr aţ-ţāir“ – „skrendantis erelis“.

Kinų mitologijoje – Niu Lang.

Kituose kataloguose – 53 Aquila, HD 187642, HR 7557, BD+08°4236, GCTP 4665.00, GJ 768, LHS 3490, HIP 97649.

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Altayras
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