HD 115954

HD 115954
Звезда
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Наблюдательные данные
(Эпоха J2000.0)
Прямое восхождение 13ч 19м 56,59с[1]
Склонение +38° 22′ 8,56″[1]
Расстояние 87,371 ± 0,1992 пк[1]
Видимая звёздная величина (V) 8,34 ± 0,02[2]
Созвездие Гончие Псы
Астрометрия
Лучевая скорость (Rv) −14,78 ± 0,0026 км/с[3]
Собственное движение
 • прямое восхождение −74,767 ± 0,016 mas/год[1]
 • склонение 21,485 ± 0,017 mas/год[1]
Параллакс (π) 11,4455 ± 0,0261 mas[1]
Спектральные характеристики
Спектральный класс G5V[2]
Показатель цвета
 • B−V 0,64
Физические характеристики
Масса 1,18 ± 0,06 M☉[4]
Радиус 1,213 ± 0,083 R☉[4]
Температура 5893 К[5]
Металличность 0,34 ± 0,02[4]
Коды в каталогах

AG+38 1258, BD+39 2631, GSC 03022-01720, HD 115954, HIC 65042, HIP 65042, PPM 77106, SAO 63482, uvby98 100115954, 2MASS J13195660+3822085, Gaia DR2 1476407794119745536, Gaia DR3 1476407794120339328, TIC 180655149, TYC 3022-1720-1, GEN# +1.00115954 и WISEA J131956.52+382208.8

Информация в базах данных
SIMBAD HD 115954
Логотип Викиданных Информация в Викиданных ?

HD 115954 — одиночная звезда в созвездии Гончих Псов на расстоянии около 280 световых лет (около 86,1 парсек) от Солнца. Визуальная звёздная величина звезды — +8,34m[6]. Возраст звезды определён как около 3,72 млрд лет[5].

Вокруг звезды обращается, как минимум, одна планета.

Характеристики

HD 115954 — жёлтый карлик спектрального класса G0V[7], или G5V[8][9], или G5[10][11]. Масса — около 1,18 солнечной, радиус — около 1,69 солнечного, светимость — около 3,039 солнечной[12]. Эффективная температура — около 5782 K[13].

Планетная система

В 2019 году учёными, анализирующими данные проектов Hipparcos и Gaia, у звезды обнаружена планета HIP 65042 c[14].

В 2021 году группой астрономов было объявлено об открытии планеты HD 115954 b[4].

Планета
 Масса
(MJ) 		Радиус
(RJ) 		Период обращения
(суток) 		Большая полуось
орбиты (а.е.) 		Эксцентриситет
орбиты
HIP 65042 c 3,94 - - 1,632 -
HD 115954 b 8,29 - 3700 5 0,487

Ссылки

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 Yoss K. M., Griffin R. F. Radial Velocities and DDO, BV Photometry of Henry Draper G5-M Stars Near the North Galactic Pole (англ.) // Journal of Astrophysics and Astronomy — Assoc for Development through Science and Education, Romania, Springer Science+Business Media, 1997. — Vol. 18, Iss. 2-3. — P. 161–227. — ISSN 0250-6335; 0973-7758 — doi:10.1007/BF02714877
  3. ↑ Soubiran C., Jasniewicz G., Chemin L., Zurbach C., Brouillet N., Panuzzo P., Sartoretti P., Katz D., Le Campion, J. -F., Marchal O. et al. Gaia Data Release 2. The catalogue of radial velocity standard stars (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2018. — Vol. 616. — 8 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201832795 — arXiv:1804.09370
  4. ↑ 1 2 3 4 Demangeon, O. D. S., Dalal S., Nsamba B., Kiefer F., Hébrard G., Camacho J. D., Arnold L., Sahlmann J., Astudillo-Defru N., Bourrier V. et al. The SOPHIE search for northern extrasolar planets. XVIII. Six new cold Jupiters, including one of the most eccentric exoplanet orbits (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2021. — Vol. 653. — 23 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/202141079 — arXiv:2107.05089
  5. ↑ 1 2 Aguilera-Gómez C., Ramírez I., Chanamé J. Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2018. — Vol. 614. — P. 55–55. — 15 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201732209 — arXiv:1803.05922
  6. ↑ Soubiran C., Brouillet N., Casamiquela L. Assessment of [Fe/H] determinations for FGK stars in spectroscopic surveys (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2022. — Vol. 663. — P. A4. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/202142409 — arXiv:2112.07545
  7. ↑ Philipot F., Lagrange, A. -M., Rubini P., Kiefer F., Chomez A. Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2023. — Vol. 670. — 16 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/202245396 — arXiv:2301.01263
  8. ↑ Xiao G., Liu Y., Teng H., Wang W., Brandt T. D., Zhao G., Zhao F., Zhai M., Gao Q. The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements (англ.) // Research in Astronomy and Astrophysics — IOP Publishing, Elsevier BV, 2023. — Vol. 23, Iss. 5. — 32 p. — ISSN 1674-4527; 0253-2379; 0275-1062; 1009-9271 — doi:10.1088/1674-4527/ACCB7E — arXiv:2303.12409
  9. ↑ Cruzalèbes P., Petrov R. G., Robbe-Dubois S., Varga J., Burtscher L., Allouche F., Berio P., Hofmann, K. -H., Hron J., Jaffe W. et al. A catalogue of stellar diameters and fluxes for mid-infrared interferometry (англ.) // Monthly Notices of the Royal Astronomical Society / D. Flower — OUP, 2019. — Vol. 490, Iss. 3. — P. 3158—3176. — ISSN 0035-8711; 1365-2966 — doi:10.1093/MNRAS/STZ2803 — arXiv:1910.00542
  10. ↑ 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.
  11. ↑ Roeser S., Bastian U. PPM (Positions and Proper Motions) North Star Catalogue (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 1988. — Vol. 74. — P. 449. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846
  12. ↑ Gaia Data Release 2 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2018.
  13. ↑ Gaia Data Release 3 (англ.) / Data Processing and Analysis Consortium, European Space Agency — 2022.
  14. ↑ Kervella P., Arenou F., Mignard F., Thévenin F. Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly (англ.) // Astronomy and Astrophysics / T. Forveille — EDP Sciences, 2019. — Vol. 623. — P. 72–72. — 23 p. — ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 — doi:10.1051/0004-6361/201834371 — arXiv:1811.08902

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