HD 223229

HD 223229
Données d'observation
(époque J2000.0)
Ascension droite 23h 47m 33,04919s[1]
Déclinaison +46° 49′ 57,2217″[1]
Constellation Andromède
Magnitude apparente 6,07[2]

Localisation dans la constellation : Andromède

(Voir situation dans la constellation : Andromède)
Caractéristiques
Type spectral B3IV[3]
Indice U-B −0,66[2]
Indice B-V −0,14[2]
Variabilité Suspectée
Astrométrie
Vitesse radiale −9,3 ± 2,2 km/s[4]
Mouvement propre μα = 0,708 ± 0,059 mas/a[1]
μδ = −5,845 ± 0,050 mas/a[1]
Parallaxe 1,969 8 ± 0,076 1 mas[1]
Distance 1 660 ± 60 al
(510 ± 20 pc)
Caractéristiques physiques
Masse 6,31 ± 0,49 M☉[5]
Luminosité 1 762 L☉[5]
Température 17 900 K[5]
Rotation 30 km/s[6]
Âge 36,8 ± 3,0 Ma[7]

Désignations

BD+46°416, HD 223229, HIP 117340, HR 9011, SAO 53374

modifier

HD 223229 est une étoile variable (suspectée) de la constellation d'Andromède. Il s'agit d'une étoile double composée d'une étoile primaire de magnitude 6,11 et d'une étoile compagne de magnitude 8,73. La paire a une séparation angulaire de 0,80" le long d'un angle de position de 250°, à partir de 2009[8]. La principale est une étoile sous-géante de type B avec un type spectral de type B3IV[3]. Sa masse est estimée à 6,3 fois celle du Soleil, avec une température effective de 17 900 K[3].

Références

  1. ↑ a b c d et e Gaia Collaboration, A. G. A. Brown, A. Vallenari et T. Prusti, « Gaia Early Data Release 3. Summary of the contents and survey properties », Astronomy and Astrophysics, vol. 649,‎ , A1 (ISSN 0004-6361, DOI 10.1051/0004-6361/202039657, lire en ligne, consulté le )
  2. ↑ a b et c B. Nicolet, « Catalogue of homogeneous data in the UBV photoelectric photometric system. », Astronomy and Astrophysics Supplement Series, vol. 34,‎ , p. 1–49 (ISSN 0365-0138, lire en ligne, consulté le )
  3. ↑ a b et c Janet Rountree Lesh, « The Kinematics of the Gould Belt: an Expanding Group? », The Astrophysical Journal Supplement Series, vol. 17,‎ , p. 371 (ISSN 0067-0049, DOI 10.1086/190179, lire en ligne, consulté le )
  4. ↑ G. A. Gontcharov, « Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system », Astronomy Letters, vol. 32,‎ , p. 759–771 (ISSN 1063-7737, DOI 10.1134/S1063773706110065, lire en ligne, consulté le )
  5. ↑ a b et c M. M. Hohle, R. Neuhäuser et B. F. Schutz, « Masses and luminosities of O- and B-type stars and red supergiants », Astronomische Nachrichten, vol. 331,‎ , p. 349 (ISSN 0004-6337, DOI 10.1002/asna.200911355, lire en ligne, consulté le )
  6. ↑ Helmut A. Abt, Hugo Levato et Monica Grosso, « Rotational Velocities of B Stars », The Astrophysical Journal, vol. 573,‎ , p. 359–365 (ISSN 0004-637X, DOI 10.1086/340590, lire en ligne, consulté le )
  7. ↑ N. Tetzlaff, R. Neuhäuser et M. M. Hohle, « A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun », Monthly Notices of the Royal Astronomical Society, vol. 410,‎ , p. 190–200 (ISSN 0035-8711, DOI 10.1111/j.1365-2966.2010.17434.x, lire en ligne, consulté le )
  8. ↑ Brian D. Mason, Gary L. Wycoff, William I. Hartkopf et Geoffrey G. Douglass, « The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog », The Astronomical Journal, vol. 122,‎ , p. 3466–3471 (ISSN 0004-6256, DOI 10.1086/323920, lire en ligne, consulté le )

Liens externes

  • Ressource relative à l'astronomieVoir et modifier les données sur Wikidata :
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