Сигма Водолея

Сигма Водолея
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 22ч 30м 38,82с[1]
Склонение −10° 40′ 40,51″[1]
Расстояние 63,192 ± 1,6556 пк[1]
Видимая звёздная величина (V) 4,81[2]
Созвездие Водолей
Астрометрия
Лучевая скорость (Rv) 11,7 ± 0,6 км/с[3]
Собственное движение
 • прямое восхождение −4,095 ± 0,598 mas/год[1]
 • склонение −38,019 ± 0,552 mas/год[1]
Параллакс (π) 15,8247 ± 0,4146 mas[1]
Спектральные характеристики
Спектральный класс A0IVs[4]
Показатель цвета
 • B−V −0,08
 • U−B −0,14
Физические характеристики
Масса 2,87 M☉
Радиус 2,87 R☉
Возраст 30 млн лет
Температура 10 700 К[5]
Светимость 105 L☉
Металличность 0,1[5]
Вращение 21 км/с[6][7]
Коды в каталогах

HD 213320, HIP 111123, HR 8573, 2MASS J22303882-1040404, SAO 165134, GSC 05814-01593, σ Aqr, PLX 5442, FK5 1591, GC 31440, GCRV 14146, HIC 111123, JP11 3501, N30 4958, PPM 240380, ROT 3274, SACS 490, TD1 29134, TYC 5814-1593-1, UBV 19230, uvby98 100213320, PLX 5442.00, YZC 11 7948, WEB 19892, Gaia DR2 2602755064754413312, 57 Aqr, Gaia DR3 2602755064754413312, TIC 250955857, UBV M 26439 и Renson 59130

Информация в базах данных
SIMBAD * sig Aqr
Логотип Викиданных Информация в Викиданных ?

Сигма Водолея (лат. σ Aquarii), 57 Водолея (лат. 57 Aquarii), HD 213320 — одиночная звезда в созвездии Водолея на расстоянии приблизительно 175 световых лет (около 54 парсеков) от Солнца. Видимая звёздная величина звезды — +4,81m[2]. Возраст звезды оценивается как около 30 млн лет[8].

Характеристики

Сигма Водолея — белый субгигант спектрального класса A0IVs[4]. Масса — около 2,87 солнечных, радиус — около 2,87 солнечных, светимость — около 105 солнечных. Эффективная температура — около 10116 К[9].

Примечания

  1. ↑ 1 2 3 4 5 6 Gaia Early Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2020.
  2. ↑ 1 2 Ducati J. R. Catalogue of Stellar Photometry in Johnson's 11-color system (англ.) — 2002. — Vol. 2237.
  3. ↑ Gontcharov G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system (англ.) // Astronomy Letters / R. Sunyaev — Nauka, Springer Science+Business Media, 2006. — Vol. 32, Iss. 11. — P. 759–771. — ISSN 1063-7737; 1562-6873; 0320-0108; 0360-0327 — doi:10.1134/S1063773706110065 — arXiv:1606.08053
  4. ↑ 1 2 Cowley A., Cowley C., Jaschek M., Jaschek C. A study of the bright A stars. I. A catalogue of spectral classifications, A study of the bright stars. I. A catalogue of spectral classifications (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 1969. — Vol. 74. — P. 375–406. — ISSN 0004-6256; 1538-3881 — doi:10.1086/110819
  5. ↑ 1 2 Gebran M., Farah W., Paletou F., Monier R., Watson V. A new method for the inversion of atmospheric parameters of A/Am stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2016. — Vol. 589. — 10 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201528052 — arXiv:1603.01146
  6. ↑ Royer F., Zorec J., Gómez A. E. Rotational velocities of A-type stars. III. Velocity distributions (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2007. — Vol. 463, Iss. 2. — P. 671–682. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:20065224 — arXiv:astro-ph/0610785
  7. ↑ Royer F., Grenier S., Baylac, M. -O., Gómez A. E., Zorec J. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2002. — Vol. 393, Iss. 3. — P. 897—911. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361:20020943 — arXiv:astro-ph/0205255
  8. ↑ Gerbaldi M., Faraggiana R., Burnage R., Delmas F., Gómez A. E., Grenier S. Search for reference A0 dwarf stars: Masses and luminosities revisited with Hipparcos parallaxes (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 1999. — Vol. 137, Iss. 2. — P. 273—292. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/AAS:1999248
  9. ↑ Zorec J., Royer F. Rotational velocities of A-type stars. IV. Evolution of rotational velocities (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2012. — Vol. 537. — 22 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201117691 — arXiv:1201.2052

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