IL Близнецов

IL Близнецов
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 6ч 39м 40,93с[1]
Склонение +20° 32′ 33,14″[1]
Созвездие Близнецы
Астрометрия
Собственное движение
 • прямое восхождение 0,173 ± 0,06 mas/год[1]
 • склонение −0,531 ± 0,052 mas/год[1]
Параллакс (π) 0,1032 ± 0,0368 mas[1]
Спектральные характеристики
Переменность RR Лиры с асимметричной кривой блеска[вд][1][2][…]
Коды в каталогах
[SHM2017] J099.92054+20.54254, 2MASS J06394093+2032330, SV* SON 7947, Gaia DR2 3372063933161568768, IL Gem и TIC 194943182
Информация в базах данных
SIMBAD V* IL Gem
Логотип Викиданных Информация в Викиданных ?

IL Близнецов (лат. IL Geminorum) — одиночная переменная звезда[3] в созвездии Близнецов на расстоянии (вычисленном из значения параллакса) приблизительно 31 604 световых лет (около 9 690 парсек) от Солнца. Видимая звёздная величина звезды — от +15,8m до +14,5m[4].

Характеристики

IL Близнецов — жёлтая пульсирующая переменная звезда типа RR Лиры (RRAB)[4][5][6][7] спектрального класса G. Эффективная температура — около 5443 К[1].

Примечания

  1. ↑ 1 2 3 4 5 6 7 Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  2. ↑ Sesar B., Hernitschek N., Mitrović S., Ivezić Ž., Cohen J. G., Rix H., Bernard E. J., Grebel E. K., Martin N. F., Schlafly E. F. et al. Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample (англ.) // The Astronomical Journal / J. G. III, E. Vishniac — New York City: IOP Publishing, AAS, University of Chicago Press, AIP, 2017. — Vol. 153, Iss. 5. — P. 204—219. — 16 p. — ISSN 0004-6256; 1538-3881 — doi:10.3847/1538-3881/AA661B — arXiv:1611.08596
  3. ↑ Skiff B. A. Coordinates and identifications for Sonneberg variables. - II (англ.) // Information Bulletin on Variable Stars — Konkoly Observatory, 1999. — Vol. 4720. — P. 1–8. — ISSN 0374-0676; 1587-2440; 1587-6578
  4. ↑ 1 2 IL Gem Архивная копия от 8 июля 2020 на Wayback Machine, 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 6 августа 2012 на Wayback Machine Accessed online 2022-04-19.
  5. ↑ N. N. Samus’, Kazarovets E. V., Durlevich O. V., Kireeva N. N., Pastukhova E. N. General catalogue of variable stars: Version GCVS 5.1 (англ.) // Astronomy Reports / D. Bisikalo — MAIK Nauka/Interperiodica, Springer Science+Business Media, 2017. — Vol. 61, Iss. 1. — P. 80–88. — ISSN 1063-7729; 1562-6881; 0004-6299 — doi:10.1134/S1063772917010085
  6. ↑ Hernitschek N., Sesar B., Rix H., Belokurov V., Martinez-Delgado D., Martin N. F., Kaiser N., Hodapp K., Chambers K. C., Wainscoat R. et al. The Geometry of the Sagittarius Stream from Pan-STARRS1 3π RR Lyrae (англ.) // The Astrophysical Journal / E. Vishniac — IOP Publishing, 2017. — Vol. 850, Iss. 1. — P. 96—112. — 17 p. — ISSN 0004-637X; 1538-4357 — doi:10.3847/1538-4357/AA960C — arXiv:1710.09436
  7. ↑ Gavrilchenko T., Klein C. R., Bloom J. S., Richards J. W. A mid-infrared study of RR Lyrae stars with the Wide-field Infrared Survey Explorer all-sky data release (англ.) // Monthly Notices of the Royal Astronomical Society / D. Flower — OUP, 2014. — Vol. 441, Iss. 1. — P. 715–725. — ISSN 0035-8711; 1365-2966 — doi:10.1093/MNRAS/STU606 — arXiv:1312.4643

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