Altair

Altair
	estrella, estrella doble (es) , near-IR source (en) y UV-emission source (en)
Parte de	Nube G (es) y Triángulu de branu
Datos d'observación
Ascensión reuta (α)	297,695827296 °
Declinación (δ)	8,868321196 °
Distancia a la Tierra	17 ly
Magnitú aparente (V)	0,76 (banda V)
Magnitú absoluta	2,22
Constelación	Aquila (es)
Velocidá de rotación	90,8 km/s
Velocidá radial	−26,6 km/s
Parallax	194,95 mas
Carauterístiques físiques
Radiu	1,7 Radius solars
Diámetru	2 530 000 km
Masa	1,7 M☉
Gravedá superficial	9000 cm/s²
Achatamientu	0,2
Tipu espectral	A7Vn
Otros nomes
	Ver llista SAO 125122 (Catálogu SAO); 2MASS J19504698+0852060 (2MASS (es) ); GSC 01058-03399 (Guide Star Catalog (es) ); HD 187642 (Catálogu Henry Draper); HIP 97649 (Catálogu Hipparcos); HR 7557 (Bright Star Catalogue); IRAS 19483+0844 (IRAS (es) ); GJ 768 (Catálogu Gliese); α Aql (Denominación de Bayer); ADS 13009 A (Aitken Double Star Catalogue (en) ); 1ES 1948+08.7 (Einstein Slew survey, Version No. 1 (en) ); 1RXS J195047.0+085159 (1RXS (en) ); ASCC 1075038 (All-sky Compiled Catalogue (en) ); BD+08 4236 (Bonner Durchmusterung); CCDM J19508+0852A (Catalog of Components of Double and Multiple Stars (en) ); FK5 745 (FK5 (en) ); GC 27470 (Boss General Catalogue (es) ); GCRV 12193 (General Catalogue of Stellar Radial Velocities (es) ); HIC 97649 (Hipparcos Input Catalogue (en) ); IDS 19459+0836 A (Index Catalogue of Visual Double Stars (en) ); IRC +10441 (Two-Micron Sky Survey (en) ); JP11 3142 (JP11 (en) ); LFT 1499 (Luyten Five-Tenths catalogue (en) ); LHS 3490 (Luyten Half-Second catalogue (en) ); LSPM J1950+0852 (LSPM-NORTH catalog (en) ); LTT 15795 (Luyten Two-Tenths catalogue (en) ); N30 4388 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) ); NLTT 48314 (New Luyten Two-Tenths catalogue (en) ); NSV 24910 (New Catalogue of Suspected Variable Stars (es) ); PLX 4665 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); PLX 4665.00 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); PMC 90-93 530 (Tokyo Photoelectric Meridian Circle Catalog (en) ); PPM 168779 (Catálogo de estrellas PPM (es) ); RAFGL 2463 (The Revised AFGL (RAFGL) catalogue (en) ); ROT 2857 (Catalogue of rotational velocities of the stars (en) ); TD1 25537 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) ); TYC 1058-3399-1 (Tycho Catalogue (en) ); UBV 16885 (UBV Photoelectric Photometry Catalogue (en) ); uvby98 100187642 (uvbyβ Photoelectric Photometric Catalogue (en) ); alf Aql (General Catalogue of Variable Stars); WDS J19508+0852A (Catálogo de Estrellas Dobles Washington (es) ); Zkh 297 (Catálogo Zakhozhaj (es) ); Ci 20 1169 (Catalogue of proper motion stars (en) ); PM 19484+0844 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ); WEB 17173 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); 53 Aql (Denominación de Flamsteed (es) ); TIC 70257116 (TESS Input Catalog (en) ); AG+08 2636 (AGK3U (en) ); UBV M 24205 (UBV Photoelectric Photometry Catalogue (en) );

Coordenaes: 19^h 50^m 46.999^s, 8^° 52^′ 5.956^″

Altair ye una estrella mui luminosa, de primer magnitú, que s'asitia na constelación del Aigla (Aquilae). Ta cerquina la Tierra, a unos 15,4 años-lluz, y eso ye lo que la fai tan resplandiente, porque realmente ye una estrella tirando a débil.

Referencies

↑ ^1,0 ^1,1 ^1,2 ^1,3 Afirmao en: SIMBAD.
↑ ^2,0 ^2,1 ^2,2 Floor van Leeuwen (2007). «Validation of the new Hipparcos reduction» (n'inglés). Astronomy and Astrophysics (2): páxs. 653–664. doi:10.1051/0004-6361:20078357.
↑ Afirmao en: Catalogue of Stellar Photometry in Johnson's 11-color system. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 2002.
↑ ^4,0 ^4,1 «Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants». The Astronomical Journal (1). 21 avientu 2016. doi:10.3847/1538-3881/153/1/21.
↑ «Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system» (n'inglés). Astronomy Letters (11): páxs. 759–771. payares 2006. doi:10.1134/S1063773706110065.
↑ Henrique Schmitt (20 avientu 2017). «Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer» (n'inglés). The Astronomical Journal (1): páxs. 30-45. doi:10.3847/1538-3881/AA9D8B.
↑ URL de la referencia: https://iopscience.iop.org/article/10.1086/322340.
↑ Christopher J. Corbally (ochobre 2003). «Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I» (n'inglés). The Astronomical Journal (4): páxs. 2048–2059. doi:10.1086/378365.

Enllaces esternos

[8ba559d5760a03bedaaacc3c347bbfe4981560bf-1] 1,0 ^1,1 ^1,2 ^1,3 Afirmao en: SIMBAD.

[8edd049ced48440d6882cc10b733308727e81acc-2] 2,0 ^2,1 ^2,2 Floor van Leeuwen (2007). «Validation of the new Hipparcos reduction» (n'inglés). Astronomy and Astrophysics (2): páxs. 653–664. doi:10.1051/0004-6361:20078357.

[a1b1b6b07c06876959d87fc2f8c07203d5b512f3-3] Afirmao en: Catalogue of Stellar Photometry in Johnson's 11-color system. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 2002.

[bd2a71104e373ac322e3d44720f2532f6e28db17-4] 4,0 ^4,1 «Abundances in the Local Region II: F, G, and K Dwarfs and Subgiants». The Astronomical Journal (1). 21 avientu 2016. doi:10.3847/1538-3881/153/1/21.

[e4ae596e5e49019b6148474aa8b1d0498039646f-5] «Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system» (n'inglés). Astronomy Letters (11): páxs. 759–771. payares 2006. doi:10.1134/S1063773706110065.

[7239f0761649ada51aa4bb9951c94ed01e30e0d4-6] Henrique Schmitt (20 avientu 2017). «Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer» (n'inglés). The Astronomical Journal (1): páxs. 30-45. doi:10.3847/1538-3881/AA9D8B.

[1ff17917e3f72025296e98f2a94b88e8f3e6aea1-7] URL de la referencia: https://iopscience.iop.org/article/10.1086/322340.

[99376777ed08f03277fd2305e1e490f7764e49c3-8] Christopher J. Corbally (ochobre 2003). «Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I» (n'inglés). The Astronomical Journal (4): páxs. 2048–2059. doi:10.1086/378365.

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