Gliese 649

Gliese 649
	estrella y near-IR source (en)
Datos d'observación
Ascensión reuta (α)	254,53687337795 °
Declinación (δ)	25,744159459126 °
Distancia a la Tierra	10,3914 pc
Magnitú aparente (V)	9,655 (banda V)
Constelación	Hércules (es)
Velocidá de rotación	2,27 km/s
Velocidá radial	4,337 km/s
Parallax	96,2333 mas
Carauterístiques físiques
Diámetru	857 000 km
Masa	0,54 M☉
Gravedá superficial	62 000 cm/s²
Tipu espectral	M1.0
Otros nomes
	Ver llista HIP 83043 (Catálogu Hipparcos); IRAS 16560+2549 (IRAS (es) ); 2MASS J16580884+2544392 (2MASS (es) ); GJ 649 (Catálogu Gliese); BD+25 3173 (Bonner Durchmusterung); ASCC 694128 (All-sky Compiled Catalogue (en) ); GCRV 9782 (General Catalogue of Stellar Radial Velocities (es) ); HIC 83043 (Hipparcos Input Catalogue (en) ); LFT 1313 (Luyten Five-Tenths catalogue (en) ); TIC 236743275 (TESS Input Catalog (en) ); LSPM J1658+2544 (LSPM-NORTH catalog (en) ); LTT 15016 (Luyten Two-Tenths catalogue (en) ); NLTT 43922 (New Luyten Two-Tenths catalogue (en) ); PLX 3857 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); PLX 3857.00 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); TYC 2063-479-1 (Tycho Catalogue (en) ); UBV 14365 (UBV Photoelectric Photometry Catalogue (en) ); UCAC4 579-054393 (Fourth USNO CCD Astrograph Catalog (en) ); Zkh 239 (Catálogo Zakhozhaj (es) ); NSV 20873 (New Catalogue of Suspected Variable Stars (es) ); UCAC2 40870437 (Second USNO CCD Astrograph Catalog (en) ); Ci 20 1014 (Catalogue of proper motion stars (en) ); PM 16561+2550 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ); Gaia DR2 4572835535272064768 (Gaia DR2 (es) ); PM J16581+2544 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ); Gaia DR1 4572835737133711744 (Gaia DR1 (es) ); WEB 14039 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); Karmn J16581+257 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) ); LHS 3257 (Luyten Half-Second catalogue (en) ); Gaia DR3 4572835535272627712 (Gaia DR3 (es) ); UBV M 1485 (UBV Photoelectric Photometry Catalogue (en) );

Gliese 649 (GJ 649 / HIP 83043 / LHS 3257)^[9] ye una estrella de magnitú aparente +9,62. Alcuéntrase na constelación d'Hércules a 25 minutos d'arcu de 57 Herculis. Dende 2009 conozse la esistencia d'un planeta estrasolar n'órbita alredor d'esta estrella.^[10]

Coordenaes: 16^h 58^m 8.85^s, 25^° 44^′ 38.974^″

Gliese 649 ye una nana colorada de tipu espectral M1.5V asitiada a 33,7 años lluz del Sistema Solar y a 4,4 años lluz de ζ Herculis.^[11] Tien una temperatura efectivo de 3700 ± 60 K^[10] —anque otra fonte da una cifra menor de 3560 K—^[12] y una masa envalorada de 0,54 ± 0,05 mases solares. Con un radiu aproximao igual al 46% del radiu solar,^[13] la so velocidá de rotación proyeutada ye igual o inferior a 1,9 km/s.^[12] La so metalicidá —bayura relativa d'elementos más pesaos que'l heliu— ye comparable a la del Sol ([Fe/H] = 0,08 ± 0,06). Considerar una estrella cromosféricamente activa.^[10]

Sistema planetariu

En 2009 anuncióse'l descubrimientu d'un planeta en redol a Gliese 649, denomináu Gliese 649 b, con una masa similar a la de Saturnu. La separación media cola estrella ye de 1,15 UA, siendo la órbita notablemente escéntrica (ε = 0,3). La zona habitable ta alcontrada a 0,21 UA, polo qu'esti planeta tendría de ser fríu —l'equivalente a tar a 5,5 UA nel nuesu Sistema Solar—. Considerando que nel periastru y nel apoastru la separación ye de 0,8 y 1,49 UA respeutivamente, el planeta podría amosar cambeos de temperatures estacionales.

Acompañante (N'orde dende la estrella)	Masa (M_J)	Periodu orbital (díes)	Semiexe mayor (UA)	Escentricidá
Gliese 649 b	> 0,328 ± 0,032	598,3 ± 4,2	1,135 ± 0,035	0,3 ± 0,08

Ver tamién

Llista de planetes estrasolares

Referencies

↑ ^1,0 ^1,1 Afirmao en: SIMBAD.
↑ ^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.
↑ «UBV(RI)C JHKobservations ofHipparcos-selected nearby stars» (n'inglés). Monthly Notices of the Royal Astronomical Society (4): páxs. 1949–1968. 21 abril 2010. doi:10.1111/J.1365-2966.2009.16182.X.
↑ ^4,0 ^4,1 «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.
↑ Caroline Soubiran (agostu 2018). «Gaia Data Release 2. The catalogue of radial velocity standard stars» (n'inglés). Astronomy and Astrophysics. doi:10.1051/0004-6361/201832795.
↑ John A. Johnson (26 xineru 2010). «The California Planet Survey. II. A Saturn-Mass Planet Orbiting the M Dwarf Gl 649» (n'inglés). Publications of the Astronomical Society of the Pacific (888): páxs. 149–155. doi:10.1086/651007.
↑ Ignasi Ribas (febreru 2022). «Metallicities in M dwarfs: Investigating different determination techniques». Astronomy and Astrophysics. doi:10.1051/0004-6361/202141920.
↑ J. Maldonado (avientu 2020). «HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets» (n'inglés). Astronomy and Astrophysics: páxs. 23. doi:10.1051/0004-6361/202039478.
↑ Gliese 649 (SIMBAD)
↑ ^10,0 ^10,1 ^10,2 Johnson, John Asher; Howard, Andrew W.; Marcy, Geoffrey W.; Bowler, Brendan P.; Henry, Gregory W.; Fischer, Debra A.; Apps, Kevin; Isaacson, Howard; Wright, Jason T. (2010). «The California Planet Survey. II. A Saturn-Mass Planet Orbiting the M Dwarf Gl 649». The Publications of the Astronomical Society of the Pacific 122 (888). pp. 149-155. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010PASP..122..149J&db_key=AST&nosetcookie=1.
↑ Stars within 10 light-years of Bonner Durchmusterung +25°3173 (The Internet Stellar Database)
↑ ^12,0 ^12,1 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). «Rotational Velocities for M Dwarfs». The Astrophysical Journal 704 (2). pp. 975-988. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1.
↑ Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007). «Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog». The Astrophysical Journal Supplement Series 168 (2). pp. 297-318. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJS..168..297T&db_key=AST&nosetcookie=1.

Coordenaes: 16^h 58^m 8.85^s, 25^° 44^′ 38.974^″

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

[88f46fab9cce60c7e274ff942763157775017282-2] 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.

[2689ae0347ecc8f2daa26956f02e559c5bb77868-3] «UBV(RI)C JHKobservations ofHipparcos-selected nearby stars» (n'inglés). Monthly Notices of the Royal Astronomical Society (4): páxs. 1949–1968. 21 abril 2010. doi:10.1111/J.1365-2966.2009.16182.X.

[c5187ef8554f2c98c58e5e88307ec301e34699ce-4] 4,0 ^4,1 «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.

[3bf3b74f599a0eb91eecfea10ab3e78fe4e80b5e-5] Caroline Soubiran (agostu 2018). «Gaia Data Release 2. The catalogue of radial velocity standard stars» (n'inglés). Astronomy and Astrophysics. doi:10.1051/0004-6361/201832795.

[ec87b657af0353286d4d3c8d039db0fc26e35f96-6] John A. Johnson (26 xineru 2010). «The California Planet Survey. II. A Saturn-Mass Planet Orbiting the M Dwarf Gl 649» (n'inglés). Publications of the Astronomical Society of the Pacific (888): páxs. 149–155. doi:10.1086/651007.

[a2da1eb175a89eecde1f930ab9ea60bf14ac23c5-7] Ignasi Ribas (febreru 2022). «Metallicities in M dwarfs: Investigating different determination techniques». Astronomy and Astrophysics. doi:10.1051/0004-6361/202141920.

[aa3096a7b63d5ced9b46d26453fa5bc89db4cc20-8] J. Maldonado (avientu 2020). «HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets» (n'inglés). Astronomy and Astrophysics: páxs. 23. doi:10.1051/0004-6361/202039478.

[SIMBAD-9] Gliese 649 (SIMBAD)

[Johnson-10] 10,0 ^10,1 ^10,2 Johnson, John Asher; Howard, Andrew W.; Marcy, Geoffrey W.; Bowler, Brendan P.; Henry, Gregory W.; Fischer, Debra A.; Apps, Kevin; Isaacson, Howard; Wright, Jason T. (2010). «The California Planet Survey. II. A Saturn-Mass Planet Orbiting the M Dwarf Gl 649». The Publications of the Astronomical Society of the Pacific 122 (888). pp. 149-155. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010PASP..122..149J&db_key=AST&nosetcookie=1.

[11] Stars within 10 light-years of Bonner Durchmusterung +25°3173 (The Internet Stellar Database)

[Jenkins-12] 12,0 ^12,1 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). «Rotational Velocities for M Dwarfs». The Astrophysical Journal 704 (2). pp. 975-988. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1.

[TakedaFord-13] Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007). «Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog». The Astrophysical Journal Supplement Series 168 (2). pp. 297-318. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJS..168..297T&db_key=AST&nosetcookie=1.

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Gliese 649
estrella^[1] y near-IR source ^(en) ^[1]
Datos d'observación
Ascensión reuta (α)	254,53687337795 °^[2]
Declinación (δ)	25,744159459126 °^[2]
Distancia a la Tierra	10,3914 pc
Magnitú aparente (V)	9,655 (banda V)
Constelación	Hércules ^(es)
Velocidá de rotación	2,27 km/s^[4]
Velocidá radial	4,337 km/s^[5]
Parallax	96,2333 mas^[2]
Carauterístiques físiques
Diámetru	857 000 km ^[4]
Masa	0,54 M☉^[6]
Gravedá superficial	62 000 cm/s²^[7]
Tipu espectral	M1.0^[8]
Otros nomes
Ver llista HIP 83043 (Catálogu Hipparcos) IRAS 16560+2549 (IRAS ^(es) ) 2MASS J16580884+2544392 (2MASS ^(es) ) GJ 649 (Catálogu Gliese) BD+25 3173 (Bonner Durchmusterung) ASCC 694128 (All-sky Compiled Catalogue ^(en) ) GCRV 9782 (General Catalogue of Stellar Radial Velocities ^(es) ) HIC 83043 (Hipparcos Input Catalogue ^(en) ) LFT 1313 (Luyten Five-Tenths catalogue ^(en) ) TIC 236743275 (TESS Input Catalog ^(en) ) LSPM J1658+2544 (LSPM-NORTH catalog ^(en) ) LTT 15016 (Luyten Two-Tenths catalogue ^(en) ) NLTT 43922 (New Luyten Two-Tenths catalogue ^(en) ) PLX 3857 (General Catalogue of Trigonometric Stellar Parallaxes ^(es) ) PLX 3857.00 (General Catalogue of Trigonometric Stellar Parallaxes ^(es) ) TYC 2063-479-1 (Tycho Catalogue ^(en) ) UBV 14365 (UBV Photoelectric Photometry Catalogue ^(en) ) UCAC4 579-054393 (Fourth USNO CCD Astrograph Catalog ^(en) ) Zkh 239 (Catálogo Zakhozhaj ^(es) ) NSV 20873 (New Catalogue of Suspected Variable Stars ^(es) ) UCAC2 40870437 (Second USNO CCD Astrograph Catalog ^(en) ) Ci 20 1014 (Catalogue of proper motion stars ^(en) ) PM 16561+2550 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more ^(en) ) Gaia DR2 4572835535272064768 (Gaia DR2 ^(es) ) PM J16581+2544 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more ^(en) ) Gaia DR1 4572835737133711744 (Gaia DR1 ^(es) ) WEB 14039 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue ^(en) ) Karmn J16581+257 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS ^(en) ) LHS 3257 (Luyten Half-Second catalogue ^(en) ) Gaia DR3 4572835535272627712 (Gaia DR3 ^(es) ) UBV M 1485 (UBV Photoelectric Photometry Catalogue ^(en) )