Gliese 686: Difference between revisions

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	'''Gliese 686''' (GJ 686 / HIP 86287 / LHS 452) <ref name="SIMBAD1"> (])</ref> is a ] in the ] of ] +9.62. Although it is close to the ] - at 26.5 ] - it is not the closest known star in its constellation, since ] is 20.9 light years away.<ref name="closeststars">{{cite web\|url=http://www.closeststars.com/\|website=closeststars.com\|title=Closest stars\|accessdate=2019-03-31}}</ref> The closest system to this star is the bright ], at 4.5 light years. They are followed by ] and ], at 7.2 and 7.6 light years respectively.<ref name="ISDB">{{cite web\|url=http://www.stellar-database.com/Scripts/find_neighbors.exe?ID=122400&ly=15\|website=stellar-database.com\|title=Stars within 15 light-years of Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref>		'''Gliese 686''' (GJ 686 / HIP 86287 / LHS 452) <ref name="SIMBAD1"> (])</ref> is a ] in the ] of ] +9.62. Although it is close to the ] - at 26.5 ] - it is not the closest known star in its constellation, since ] is 20.9 light years away.<ref name="closeststars">{{cite web\|url=http://www.closeststars.com/\|website=closeststars.com\|title=Closest stars\|accessdate=2019-03-31}}</ref> The closest system to this star is the bright ], at 4.5 light years. They are followed by ] and ], at 7.2 and 7.6 light years respectively.<ref name="ISDB">{{cite web\|url=http://www.stellar-database.com/Scripts/find_neighbors.exe?ID=122400&ly=15\|website=stellar-database.com\|title=Stars within 15 light-years of Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref>

	Gliese 686 is one of the many ] in the Solar System neighborhood Of ] M1.0V,<ref name="SIMBAD1" /> it has an ] of 3484 ± 50 ]. Its ] in the ] is equal to 0.82% of that of the ],<ref name="ISDB2">{{cite web\|url=http://www.stellar-database.com/Scripts/search_star.exe?Catalog=HIC&CatNo=86287\|website=stellar-database.com\|title=Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref> while its total luminosity is equivalent to 2.7% that of the Sun,<ref name="Morales">{{cite journal\|author1=Morales, J. C.\|author2=Ribas, I.\|author3=Jordi, C.\|title=The effect of activity on stellar temperatures and radii\|year=2008\|journal=]\|volume=478\|issue=2\|id=pp. 507-512\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...478..507M&db_key=AST&nosetcookie=1}}</ref> since a significant amount of the radiation emitted by these stars is ]. Considering only this last parameter, Gliese 686 is considerably brighter than other known red dwarfs; thus, it is 6.5 times more luminous than ] and 15 times more than ], the closest star to the Solar System.		Gliese 686 is one of the many ] in the Solar System neighborhood Of ] M1.0V,<ref name="SIMBAD1" /> it has an ] of 3484 ± 50 ]. Its ] in the ] is equal to 0.82% of that of the ],<ref name="ISDB2">{{cite web\|url=http://www.stellar-database.com/Scripts/search_star.exe?Catalog=HIC&CatNo=86287\|website=stellar-database.com\|title=Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref> while its total luminosity is equivalent to 2.7% that of the Sun,<ref name="Morales">{{cite journal\|author1=Morales, J. C.\|author2=Ribas, I.\|author3=Jordi, C.\|title=The effect of activity on stellar temperatures and radii\|year=2008\|journal=]\|volume=478\|issue=2\|id=pp. 507-512\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...478..507M&db_key=AST&nosetcookie=1\|arxiv=0711.3523}}</ref> since a significant amount of the radiation emitted by these stars is ]. Considering only this last parameter, Gliese 686 is considerably brighter than other known red dwarfs; thus, it is 6.5 times more luminous than ] and 15 times more than ], the closest star to the Solar System.

	Gliese 686 has a radius approximately equal to half the ]. Its projected ] is 2.5 km / s, its ] being equal to or less than 10.3 days.<ref name="Houdebine" /> It has a metallic content lower than that of the Sun; various studies estimate its index ] between -0.25 and -0.44.<ref name="Houdebine">{{cite journal\|author=Houdebine, E. R.\|title=Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars\|year=2010\|journal=]\|volume=407\|issue=3\|id=pp. 1657–1673\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010MNRAS.407.1657H&db_key=AST&nosetcookie=1}}</ref><ref name="Jenkins">{{cite journal\|author1=Jenkins, J. S.\|author2=Ramsey, L. W.\|author3=Jones, H. R. A.\|author4=Pavlenko, Y.\|author5=Gallardo, J.\|author6=Barnes, J. R.\|author7=Pinfield, D. J.\|title=Rotational Velocities for M Dwarfs\|year=2009\|journal=]\|volume=704\|issue=2\|id=pp. 975-988\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1}}</ref> It has an approximate mass between 45% and 49% of the solar mass <ref name="Bonfils">{{cite journal\|author1=Bonfils, X.\|author2=Delfosse, X.\|author3=Udry, S.\|author4=Santos, N. C.\|author5=Forveille, T.\|author6=Ségransan, D.\|title=Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence\|year=2005\|journal=]\|volume=442\|issue=2\|id=pp. 635-642\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1}}</ref> and is a star with characteristics comparable to that of ].		Gliese 686 has a radius approximately equal to half the ]. Its projected ] is 2.5 km / s, its ] being equal to or less than 10.3 days.<ref name="Houdebine" /> It has a metallic content lower than that of the Sun; various studies estimate its index ] between -0.25 and -0.44.<ref name="Houdebine">{{cite journal\|author=Houdebine, E. R.\|title=Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars\|year=2010\|journal=]\|volume=407\|issue=3\|id=pp. 1657–1673\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010MNRAS.407.1657H&db_key=AST&nosetcookie=1}}</ref><ref name="Jenkins">{{cite journal\|author1=Jenkins, J. S.\|author2=Ramsey, L. W.\|author3=Jones, H. R. A.\|author4=Pavlenko, Y.\|author5=Gallardo, J.\|author6=Barnes, J. R.\|author7=Pinfield, D. J.\|title=Rotational Velocities for M Dwarfs\|year=2009\|journal=]\|volume=704\|issue=2\|id=pp. 975-988\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1}}</ref> It has an approximate mass between 45% and 49% of the solar mass <ref name="Bonfils">{{cite journal\|author1=Bonfils, X.\|author2=Delfosse, X.\|author3=Udry, S.\|author4=Santos, N. C.\|author5=Forveille, T.\|author6=Ségransan, D.\|title=Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence\|year=2005\|journal=]\|volume=442\|issue=2\|id=pp. 635-642\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1}}</ref> and is a star with characteristics comparable to that of ].

Revision as of 14:24, 25 July 2019

Star in the Hercules constellation

**Gliese 686**

Constellation	Hercules
Right ascension α	17h 37min 53,35s
Declination δ	+18º 35’ 30,2’’
Distance	26.5 light years
Apparent Magnitude	+9.62
Absolute Magnitude	+10.17
Luminosity	0.027 solar
Temperature	3484 ± 50 K
Mass	0.47 solar
Radius	0.51 solar
Spectral type	M1.0V

Gliese 686 (GJ 686 / HIP 86287 / LHS 452) is a star in the Hercules constellation of apparent magnitude +9.62. Although it is close to the Solar System - at 26.5 light years - it is not the closest known star in its constellation, since Gliese 661 is 20.9 light years away. The closest system to this star is the bright μ Herculis, at 4.5 light years. They are followed by GJ 1230 and Gliese 673, at 7.2 and 7.6 light years respectively.

Gliese 686 is one of the many red dwarfs in the Solar System neighborhood Of spectral type M1.0V, it has an effective temperature of 3484 ± 50 K. Its brightness in the visible spectrum is equal to 0.82% of that of the Sun, while its total luminosity is equivalent to 2.7% that of the Sun, since a significant amount of the radiation emitted by these stars is infrared invisible light. Considering only this last parameter, Gliese 686 is considerably brighter than other known red dwarfs; thus, it is 6.5 times more luminous than Ross 154 and 15 times more than Proxima Centauri, the closest star to the Solar System.

Gliese 686 has a radius approximately equal to half the solar radius. Its projected rotation speed is 2.5 km / s, its rotation period being equal to or less than 10.3 days. It has a metallic content lower than that of the Sun; various studies estimate its index metallicity between -0.25 and -0.44. It has an approximate mass between 45% and 49% of the solar mass and is a star with characteristics comparable to that of Lacaille 9352.

Planetary System

Gliese 686 has one known Super Earth planet detected by radial velocity.

The Gliese 686 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	7.1±0.9 M_🜨	0.091±0.004	15.53209+0.00166−0.00167	—	—	—

References

^ LHS 452 - High proper-motion Star (SIMBAD)
"Closest stars". closeststars.com. Retrieved 2019-03-31.
"Stars within 15 light-years of Bonner Durchmusterung +18°3421 (The Internet Stellar Database)". stellar-database.com. Retrieved 2019-03-31.
"Bonner Durchmusterung +18°3421 (The Internet Stellar Database)". stellar-database.com. Retrieved 2019-03-31.
Morales, J. C.; Ribas, I.; Jordi, C. (2008). "The effect of activity on stellar temperatures and radii". Astronomy and Astrophysics. 478 (2). arXiv:0711.3523. pp. 507-512.
^ Houdebine, E. R. (2010). "Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars". Monthly Notices of the Royal Astronomical Society. 407 (3). pp. 1657–1673.
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.
Bonfils, X.; Delfosse, X.; Udry, S.; Santos, N. C.; Forveille, T.; Ségransan, D. (2005). "Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence". Astronomy and Astrophysics. 442 (2). pp. 635-642.
Affer, L.; Damasso, M.; Micela, G.; Poretti, E.; Scandariato, G.; Maldonado, J.; Lanza, A. F.; Covino, E.; Rubio, A. Garrido (31 January 2019). "HADES RV program with HARPS-N at TNG. IX. A super-Earth around the M dwarf Gl686". Astronomy & Astrophysics. 622: A193. arXiv:1901.05338. doi:10.1051/0004-6361/201834868. ISSN 0004-6361.

Constellation of Hercules

Stars

Bayer	α (Rasalgethi) β (Kornephoros) γ δ (Sarin) ε ζ η θ ι κ (Marsic) λ (Maasym) μ ν ξ ο π ρ σ τ υ φ χ ψ ψ ω (Cujam)
Flamsteed	14 29 (h) 30 (g) 42 45 (l) 52 60 68 (u) 69 (e) 72 (w) 89 93 98 99 (b) 102 104 (A) 106 109 110 111 112 32 Oph
Variable	X AC AM BL DI DQ V446 V533 V772 V777 V838 V1674
HR	6669 6697 6806
HD	146389 (Irena) 147506 (Hunor) 149026 (Ogma) 152843 154345 155358 156668 159062 164595 164922
Other	BD +17° 3248 Furuhjelm 46 GD 362 Gliese 623 Gliese 638 Gliese 649 Gliese 686 GJ 3991 HAT-P-14 (Franz) HAT-P-18 HAT-P-67 Hercules X-1 GSC 02620-00648 Ross 640 TOI-2119 TrES-3 (Pipoltr) TYC 1031-1262-1 WASP-103 WISE 1738+2732 WISE 1741+2553

Exoplanets	14 Herculis b c HAT-P-14b (Sissi) HD 149026 b (Smertrios) HD 164922 b c WASP-103b

Star clusters	Messier 13 Messier 92 NGC 6229 Palomar 14

Nebulae	Abell 39 NGC 6210

Galaxies

NGC	6028 6039 6040 6041 6042 6043 6044 6045 6046 6047 6052 6053 6054 6055 6056 6057 6061 6078 6158 6166 6181 6207 6212 6239 6261 6263 6308 6452 6560
Other	1ES 1741+196 2MASX J16270254+4328340 3C 345 3C 346 A2261-BCG Arp 272 (NGC 6050 and IC 1179) AT2018cow IC 1182 IC 1189 Hercules Dwarf Hercules A IC 1192 IC 4617 Markarian 501 MCG+07-33-027 PGC 2046648 QSR J1819+3845 RX J1633.3+4718 UGC 11105

Galaxy clusters	Abell 2152 Abell 2199 Hercules Cluster Hercules Superclusters Zwicky's Triplet

Astronomical events	LBG-2377

Revision as of 10:06, 24 April 2019 editExoplanetcool (talk \| contribs)106 editsmNo edit summaryTag: Visual edit ← Previous edit		Revision as of 14:24, 25 July 2019 edit undoOAbot (talk \| contribs)Bots442,414 editsm Open access bot: add arxiv identifier to citation with #oabot.Next edit →
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	'''Gliese 686''' (GJ 686 / HIP 86287 / LHS 452) <ref name="SIMBAD1"> (])</ref> is a ] in the ] of ] +9.62. Although it is close to the ] - at 26.5 ] - it is not the closest known star in its constellation, since ] is 20.9 light years away.<ref name="closeststars">{{cite web\|url=http://www.closeststars.com/\|website=closeststars.com\|title=Closest stars\|accessdate=2019-03-31}}</ref> The closest system to this star is the bright ], at 4.5 light years. They are followed by ] and ], at 7.2 and 7.6 light years respectively.<ref name="ISDB">{{cite web\|url=http://www.stellar-database.com/Scripts/find_neighbors.exe?ID=122400&ly=15\|website=stellar-database.com\|title=Stars within 15 light-years of Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref>		'''Gliese 686''' (GJ 686 / HIP 86287 / LHS 452) <ref name="SIMBAD1"> (])</ref> is a ] in the ] of ] +9.62. Although it is close to the ] - at 26.5 ] - it is not the closest known star in its constellation, since ] is 20.9 light years away.<ref name="closeststars">{{cite web\|url=http://www.closeststars.com/\|website=closeststars.com\|title=Closest stars\|accessdate=2019-03-31}}</ref> The closest system to this star is the bright ], at 4.5 light years. They are followed by ] and ], at 7.2 and 7.6 light years respectively.<ref name="ISDB">{{cite web\|url=http://www.stellar-database.com/Scripts/find_neighbors.exe?ID=122400&ly=15\|website=stellar-database.com\|title=Stars within 15 light-years of Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref>

	Gliese 686 is one of the many ] in the Solar System neighborhood Of ] M1.0V,<ref name="SIMBAD1" /> it has an ] of 3484 ± 50 ]. Its ] in the ] is equal to 0.82% of that of the ],<ref name="ISDB2">{{cite web\|url=http://www.stellar-database.com/Scripts/search_star.exe?Catalog=HIC&CatNo=86287\|website=stellar-database.com\|title=Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref> while its total luminosity is equivalent to 2.7% that of the Sun,<ref name="Morales">{{cite journal\|author1=Morales, J. C.\|author2=Ribas, I.\|author3=Jordi, C.\|title=The effect of activity on stellar temperatures and radii\|year=2008\|journal=]\|volume=478\|issue=2\|id=pp. 507-512\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...478..507M&db_key=AST&nosetcookie=1}}</ref> since a significant amount of the radiation emitted by these stars is ]. Considering only this last parameter, Gliese 686 is considerably brighter than other known red dwarfs; thus, it is 6.5 times more luminous than ] and 15 times more than ], the closest star to the Solar System.		Gliese 686 is one of the many ] in the Solar System neighborhood Of ] M1.0V,<ref name="SIMBAD1" /> it has an ] of 3484 ± 50 ]. Its ] in the ] is equal to 0.82% of that of the ],<ref name="ISDB2">{{cite web\|url=http://www.stellar-database.com/Scripts/search_star.exe?Catalog=HIC&CatNo=86287\|website=stellar-database.com\|title=Bonner Durchmusterung +18°3421 (The Internet Stellar Database)\|accessdate=2019-03-31}}</ref> while its total luminosity is equivalent to 2.7% that of the Sun,<ref name="Morales">{{cite journal\|author1=Morales, J. C.\|author2=Ribas, I.\|author3=Jordi, C.\|title=The effect of activity on stellar temperatures and radii\|year=2008\|journal=]\|volume=478\|issue=2\|id=pp. 507-512\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...478..507M&db_key=AST&nosetcookie=1\|arxiv=0711.3523}}</ref> since a significant amount of the radiation emitted by these stars is ]. Considering only this last parameter, Gliese 686 is considerably brighter than other known red dwarfs; thus, it is 6.5 times more luminous than ] and 15 times more than ], the closest star to the Solar System.

	Gliese 686 has a radius approximately equal to half the ]. Its projected ] is 2.5 km / s, its ] being equal to or less than 10.3 days.<ref name="Houdebine" /> It has a metallic content lower than that of the Sun; various studies estimate its index ] between -0.25 and -0.44.<ref name="Houdebine">{{cite journal\|author=Houdebine, E. R.\|title=Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars\|year=2010\|journal=]\|volume=407\|issue=3\|id=pp. 1657–1673\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010MNRAS.407.1657H&db_key=AST&nosetcookie=1}}</ref><ref name="Jenkins">{{cite journal\|author1=Jenkins, J. S.\|author2=Ramsey, L. W.\|author3=Jones, H. R. A.\|author4=Pavlenko, Y.\|author5=Gallardo, J.\|author6=Barnes, J. R.\|author7=Pinfield, D. J.\|title=Rotational Velocities for M Dwarfs\|year=2009\|journal=]\|volume=704\|issue=2\|id=pp. 975-988\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1}}</ref> It has an approximate mass between 45% and 49% of the solar mass <ref name="Bonfils">{{cite journal\|author1=Bonfils, X.\|author2=Delfosse, X.\|author3=Udry, S.\|author4=Santos, N. C.\|author5=Forveille, T.\|author6=Ségransan, D.\|title=Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence\|year=2005\|journal=]\|volume=442\|issue=2\|id=pp. 635-642\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1}}</ref> and is a star with characteristics comparable to that of ].		Gliese 686 has a radius approximately equal to half the ]. Its projected ] is 2.5 km / s, its ] being equal to or less than 10.3 days.<ref name="Houdebine" /> It has a metallic content lower than that of the Sun; various studies estimate its index ] between -0.25 and -0.44.<ref name="Houdebine">{{cite journal\|author=Houdebine, E. R.\|title=Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars\|year=2010\|journal=]\|volume=407\|issue=3\|id=pp. 1657–1673\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010MNRAS.407.1657H&db_key=AST&nosetcookie=1}}</ref><ref name="Jenkins">{{cite journal\|author1=Jenkins, J. S.\|author2=Ramsey, L. W.\|author3=Jones, H. R. A.\|author4=Pavlenko, Y.\|author5=Gallardo, J.\|author6=Barnes, J. R.\|author7=Pinfield, D. J.\|title=Rotational Velocities for M Dwarfs\|year=2009\|journal=]\|volume=704\|issue=2\|id=pp. 975-988\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1}}</ref> It has an approximate mass between 45% and 49% of the solar mass <ref name="Bonfils">{{cite journal\|author1=Bonfils, X.\|author2=Delfosse, X.\|author3=Udry, S.\|author4=Santos, N. C.\|author5=Forveille, T.\|author6=Ségransan, D.\|title=Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence\|year=2005\|journal=]\|volume=442\|issue=2\|id=pp. 635-642\|url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1}}</ref> and is a star with characteristics comparable to that of ].