Lalande 21185

Lalande 21185
estrella variable eruptiva (es) [1], estrella doble (es) [1] y near-IR source (en) [1]
Descubridor	Joseph Lalande (es)
Data de descubrimientu	1801
Datos d'observación
Ascensión reuta (α)	165,83414508164 °[2]
Declinación (δ)	35,969882272794 °[2]
Distancia a la Tierra	2,5461 pc
Magnitú aparente (V)	7,52 (banda V)
Magnitú absoluta	10,46
Constelación	Sietestrellu
Velocidá de rotación	0 km/s[4]
Velocidá radial	−84,835 km/s[5]
Parallax	392,7529 mas[2]
Carauterístiques físiques
Radiu	0,393 Radius solars [6]
Diámetru	611 000 km [7]
Masa	0,46 M☉[6]
Gravedá superficial	65 000 cm/s²[8]
Tipu espectral	M[4]
Otros nomes
Ver llista HD 95735 (Catálogu Henry Draper) 2MASS J11032027+3558203 (2MASS (es) ) 2MASS J11032023+3558117 (2MASS (es) ) GSC 02521-02279 (Guide Star Catalog (es) ) HIP 54035 (Catálogu Hipparcos) IRAS 11005+3615 (IRAS (es) ) SAO 62377 (Catálogu SAO) GJ 411 (Catálogu Gliese) BD+36 2147 (Bonner Durchmusterung) ASCC 492123 (All-sky Compiled Catalogue (en) ) CCDM J11033+3558A (Catalog of Components of Double and Multiple Stars (en) ) GC 15183 (Boss General Catalogue (es) ) GCRV 6818 (General Catalogue of Stellar Radial Velocities (es) ) HIC 54035 (Hipparcos Input Catalogue (en) ) JP11 2024 (JP11 (en) ) LFT 756 (Luyten Five-Tenths catalogue (en) ) LHS 37 (Luyten Half-Second catalogue (en) ) LSPM J1103+3558 (LSPM-NORTH catalog (en) ) LTT 12960 (Luyten Two-Tenths catalogue (en) ) NLTT 26105 (New Luyten Two-Tenths catalogue (en) ) PLX 2576 (General Catalogue of Trigonometric Stellar Parallaxes (es) ) PLX 2576.00 (General Catalogue of Trigonometric Stellar Parallaxes (es) ) PPM 75640 (Catálogo de estrellas PPM (es) ) RAFGL 411 (The Revised AFGL (RAFGL) catalogue (en) ) ROT 1651 (Catalogue of rotational velocities of the stars (en) ) TYC 2521-2279-1 (Tycho Catalogue (en) ) UBV 10094 (UBV Photoelectric Photometry Catalogue (en) ) UCAC4 630-046224 (Fourth USNO CCD Astrograph Catalog (en) ) uvby98 100095735 (uvbyβ Photoelectric Photometric Catalogue (en) ) Zkh 149 (Catálogo Zakhozhaj (es) ) DO 14335 (Dearborn Observatory Catalogue (en) ) Karmn J11033+359 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) ) AC2000 1340883 (The AC 2000: the astrographic catalogue on the system defined by the Hipparcos catalogue (en) ) Ci 20 604 (Catalogue of proper motion stars (en) ) LAL 21185 (A catalogue of those stars in the "Histoire Celeste Francaise" of J. De Lalande for which tables of reduction to the epoch 1800 have been published by Professor Schumacher (en) ) PM 11006+3617 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ) [GKL99] 233 (Catalogue and bibliography of the UV Cet-type flare stars and related objects in the solar vicinity (en) ) PM J11033+3558 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ) WEB 9772 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ) TIC 166646191 (TESS Input Catalog (en) ) TIC 353969903 (TESS Input Catalog (en) ) Gaia DR3 762815470562110464 (Gaia DR3 (es) ) AG+36 1043 (AGK3U (en) ) UBV M 16736 (UBV Photoelectric Photometry Catalogue (en) )

Coordenaes: 11^h 3^m 20.195^s, 35^° 58^′ 11.576^″

Lalande 21185 (GJ 411)^[9] ye'l nome de la quinta estrella más cercana al nuesu Sol dempués d'Alfa Centauri, la Estrella de Barnard, Luhman 16 y Wolf 359. A pesar de la so cercanía, namái tien magnitú aparente +7,47 y nun ye visible a simple vista, anque sí con cualesquier telescopiu pequeñu. Alcuéntrase nel rincón sureste de la constelación del sietestrellu, al noroeste d'Alula Borealis (ν Ursae Majoris) y al nordeste de Praecipua (46 Leonis Minoris). Afayóse por Joseph-Jérôme Lefrançais de Lalande, quien fora direutor del Observatoriu de París.

1. ↑ ^{1,0 1,1 1,2} Afirmao en: SIMBAD.
2. ↑ ^{2,0 2,1 2,2 2,3} Afirmao en: Gaia EDR3. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 3 avientu 2020.
3. ↑ «Photoelectric photometry of stars near the North Galactic Pole. II». Astronomy and Astrophysics:  páxs. 331–339. 1985. 
4. ↑ ^{4,0 4,1} Bárbara Rojas-Ayala (mayu 2021). «Determination of spectroscopic parameters for 313 M dwarf stars from their APOGEE Data Release 16 H-band spectra». Astronomy and Astrophysics:  páxs. A147. doi:10.1051/0004-6361/202039703. 
5. ↑ M. Lampón (abril 2018). «The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars» (n'inglés). Astronomy and Astrophysics:  páxs. 49–49. doi:10.1051/0004-6361/201732054. 
6. ↑ ^{6,0 6,1} R. Paul Butler (12 abril 2017). «The LCES HIRES/Keck Precision Radial Velocity Exoplanet Survey» (n'inglés). The Astronomical Journal (5):  páxs. 208. doi:10.3847/1538-3881/AA66CA. 
7. ↑ «Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars★» (n'inglés). Monthly Notices of the Royal Astronomical Society (3):  páxs. 1657–1673. 25 agostu 2010. doi:10.1111/J.1365-2966.2010.16827.X. 
8. ↑ Ignasi Ribas (febreru 2022). «Metallicities in M dwarfs: Investigating different determination techniques». Astronomy and Astrophysics. doi:10.1051/0004-6361/202141920. 
9. ↑ HD 95735 -- Flare Star (SIMBAD)