SY Водолея

SY Водолея
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 21ч 50м 44,55с[1]
Склонение −5° 07′ 5,02″[1]
Видимая звёздная величина (V) 10,12 ± 0,05[2]
Созвездие Водолей
Астрометрия
Собственное движение
 • прямое восхождение −5,213 ± 0,242 mas/год[1]
 • склонение −14,94 ± 0,243 mas/год[1]
Параллакс (π) 1,2159 ± 0,2402 mas[1]
Спектральные характеристики
Спектральный класс M3III[3]
Показатель цвета
 • B−V 1,35
Переменность SRB полуправильная[4]
Коды в каталогах

AN 130.1908, BD-05 5649, GSC 05218-00675, HD 207677, IRAS 21481-0521, PPM 205672, SV* HV 3151, TYC 5218-675-1, 2MASS J21504455-0507049, AGASC 683939096, Gaia DR2 2669622654671781888 и SY Aqr

Информация в базах данных
SIMBAD V* SY Aqr
Логотип Викиданных Информация в Викиданных ?

SY Водолея (лат. SY Aquarii), HD 207677 — одиночная переменная звезда в созвездии Водолея на расстоянии (вычисленном из значения параллакса) приблизительно 2682 световых лет (около 822 парсеков) от Солнца. Видимая звёздная величина звезды — от +11,6m до +9,1m[5].

Характеристики

SY Водолея — красный гигант, пульсирующая полуправильная переменная звезда типа SRB (SRB) спектрального класса M5[5] или M3III[3]. Эффективная температура — около 3286 К[1].

Примечания

  1. ↑ 1 2 3 4 5 6 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. ↑ Høg E., Fabricius C., Makarov V. V., Urban S., Corbin T., Wycoff G., Bastian U., Schwekendiek P., Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2000. — Vol. 355. — P. L27—L30. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  3. ↑ 1 2 Houk N., Swift C. Michigan catalogue of two-dimensional spectral types for the HD Stars (англ.) — 1999. — Vol. 5.
  4. ↑ Samus N. N., Durlevich O. V., et a. General Catalogue of Variable Stars (Samus+ 2007-2011) — 2009. — Т. 1. — С. 2025.
  5. ↑ 1 2 SY Aqr, database entry, Combined General Catalog of Variable Stars (GCVS5.1, 2017 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Архивная копия от 1 июля 2015 на Wayback Machine Accessed online 2020-10-06.

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