NN Большой Медведицы

NN Большой Медведицы
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 12ч 26м 20,20с[1]
Склонение +54° 35′ 19,23″[1]
Расстояние 410,2732 ± 4,1408 пк[1]
Видимая звёздная величина (V) 7,53 ± 0,01[2]
Созвездие Большая Медведица
Астрометрия
Лучевая скорость (Rv) 16,84 ± 0,14 км/с[1]
Собственное движение
 • прямое восхождение −30,543 ± 0,038 mas/год[1]
 • склонение 1,153 ± 0,035 mas/год[1]
Параллакс (π) 2,4374 ± 0,0246 mas[1]
Спектральные характеристики
Спектральный класс K2[3]
Показатель цвета
 • B−V 1,57
Коды в каталогах

AG+54 863, AGKR 11136, BD+55 1531, DO 34058, GC 16956, GSC 03834-00598, HD 108316, HIC 60693, HIP 60693, IRAS 12239+5451, PMC 90-93 3563, PPM 33559, SAO 28386, SKY# 23274, TYC 3834-598-1, YZ 54 7167, 2MASS J12262020+5435191, Gaia DR1 1572574478402450688, Gaia DR2 1572574482698856448 и NN UMa

Информация в базах данных
SIMBAD V* NN UMa
Логотип Викиданных Информация в Викиданных ?

NN Большой Медведицы (лат. NN Ursae Majoris), HD 108316 — одиночная переменная звезда в созвездии Большой Медведицы на расстоянии приблизительно 1338 световых лет (около 410 парсеков) от Солнца. Видимая звёздная величина звезды — от +7,56m до +7,53m[4].

Характеристики

NN Большой Медведицы — оранжевая вращающаяся переменная звезда типа BY Дракона (BY:) спектрального класса K2[4][3].

Примечания

  1. ↑ 1 2 3 4 5 6 7 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 Cannon A. J., Pickering E. C. VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925) (англ.) // Annals of the Astronomical Observatory of Harvard College — 1918. — Vol. 91-100.
  4. ↑ 1 2 NN UMa, 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 2020-08-14.

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