View source for Astronomy:GJ 3323

{{Short description|Star in the constellation Eridanus}}
{{Sky|05|01|57.42611|-|06|56|46.3718|17.531}}
{{Starbox begin}}
{{Starbox image
|image={{Location map|100x100|AlternativeMap=Eridanus_constellation_map.svg
|alt=GJ 3323 is located in the constellation Eridanus
|caption=Location of GJ 3323 in the constellation [[Astronomy:Eridanus (constellation)|Eridanus]]|border=infobox|mark=Red_pog.png|width=285
|label=<br/>GJ 3323
|lat=83.1
|long=15.3
}}|caption=
}}
{{Starbox observe
 | epoch       = J2000
 | ra          = {{RA|05|01|57.42613}}<ref name="GaiaDR3"/>
 | dec         = {{DEC|−06|56|46.3763}}<ref name="GaiaDR3"/>
 | appmag_v    = 12.20<ref name=Soubiran2018/>
 | constell    = [[Astronomy:Eridanus (constellation)|Eridanus]]
}}
{{Starbox character
 | type        = 
 | class       = M4.0Ve<ref name=Davison_et_al_2015/>
 | b-v         = +1.72<ref name=Soubiran2018/>
 | variable    = 
}}
{{Starbox astrometry 
 | radial_v    = {{val|42.309|0.0809}}<ref name=Soubiran2018/>
 | prop_mo_ra  = {{val|−551.746}}
 | prop_mo_dec = {{val|−533.648}}
 | pm_footnote = <ref name="GaiaDR3"/>
 | parallax    = 186.0466
 | p_error     = 0.0277
 | parallax_footnote = <ref name="GaiaDR3"/>
 | absmag_v    = 13.57<ref name=Davison_et_al_2015/>
}}
{{Starbox detail
 | source      = <ref name=Schweitzer_et_al_2019/>
 | mass        = {{val|0.1705|0.0044}}
 | radius      = {{val|0.1862|0.0059}}
 | luminosity  = {{val|0.003654|0.000052|fmt=commas}}
 | gravity     = {{val|5.07|0.07}}
 | temperature = {{val|3288|51|fmt=commas}}
 | metal_fe    = {{val|+0.01|0.16}}
 | rotation    = {{val|88.50|u=days}}<ref name=Wright_et_al_2018/>
 | rotational_velocity = {{val|1.0|0.8}}<ref name=Davison_et_al_2015/>
 | age_gyr     = 
}}
{{Starbox catalog
 | names = {{odlist | LHS=1723 | GJ=3323 | NLTT=14393 | 2MASS=J05015746-0656459 | 1RXS=J050157.6-065641 }}<ref name=SIMBAD/>
}}
{{Starbox reference
 | Simbad = LHS+1723
}}
{{Starbox end}}

'''GJ 3323''' (also known as LHS 1723) is a nearby single<ref name="Astudillo-Defru2017"/> [[Astronomy:Star|star]] located in the [[Celestial equator|equatorial]] [[Astronomy:Constellation|constellation]] [[Astronomy:Eridanus (constellation)|Eridanus]], about 0.4° to the northwest of the naked eye star [[Astronomy:Psi Eridani|Psi Eridani]].<ref name=Sinnott1997/> It is invisible to the naked eye with an [[Astronomy:Apparent visual magnitude|apparent visual magnitude]] 12.20.<ref name=Soubiran2018/> [[Astronomy:Stellar parallax|Parallax]] measurements give a distance estimate of {{convert|17.5|ly|pc|lk=on|abbr=off}} from the [[Astronomy:Sun|Sun]].<ref name="GaiaDR3"/> It is drifting further away with a [[Astronomy:Radial velocity|radial velocity]] of +42.3&nbsp;km/s.<ref name=Soubiran2018/> Roughly 104,000&nbsp;years ago, the star is believed to have come to within {{convert|2.25|±|0.05|pc|ly|disp=out|abbr=off}} of the [[Astronomy:Solar System|Solar System]].<ref name=Bobylev2010/>

The [[Astronomy:Stellar classification|stellar classification]] of GJ 3323 is M4.0Ve,<ref name=Davison_et_al_2015/> indicating that it is a red dwarf, with emission lines appearing in its spectrum.<ref name=Soubiran2018/> It is fully convective and a source of [[Astronomy:X-ray astronomy|X-ray emission]].<ref name=Wright_et_al_2018/> The star has 17% of the Sun's mass, 19% of the radius of the Sun, and just 0.4% of the Sun's luminosity.<ref name=Schweitzer_et_al_2019/>

==History of observations==
The discovery name of this star is LP 656-38,{{r|Kirkpatrick2012}} which indicates that its discovery was published between 1963 and 1981 in [[Organization:University of Minnesota|University of Minnesota]], Minneapolis.<ref name="LP">Dictionary of Nomenclature of Celestial Objects. [http://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?LP LP entry]. ''[[Astronomy:SIMBAD|SIMBAD]]''. Centre de Données astronomiques de Strasbourg.</ref> "LP" means "Luyten, [[Organization:Palomar Observatory|Palomar]]".

GJ 3323 is known at least from 1979, when catalogues of high proper motion objects LHS and NLTT were published by Willem Jacob Luyten, and this object was included to these catalogues.<ref name="Luyten1979 LHS">{{cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=I/87B&LHS=1723|title=LHS 1723|website=LHS Catalogue, 2nd Edition|author=Luyten, Willem Jacob|year=1979}}</ref><ref name="Luyten1979 NLTT">{{cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=I/98A&recno=14393|title=NLTT 14393|website=NLTT Catalogue|author=Luyten, Willem Jacob|year=1979}}</ref>

===Distance measurement===
In 1982, Wilhelm Gliese published a photometric distance of GJ 3323 (161 mas),{{r|Gliese1982}} and in 1991 it was included in the 3rd preliminary version of catalogue of nearby stars by Gliese and Jahreiss as NN 3323 (also designated as GJ 3323) with photometric parallax {{val|163.0|26.0|ul=mas}}.<ref name="Gliese1991">{{cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=V/70A&Name=NN%203323|title=NN 3323|website=Preliminary Version of the Third Catalogue of Nearby Stars|author1=Gliese, W.  |author2=Jahreiß, H.|year=1991|access-date=2014-11-23}}</ref>

Its trigonometric parallax remained unknown until 2006, when it was published by the [[Organization:Research Consortium On Nearby Stars|RECONS]] team. The parallax was {{val|187.92|1.26|u=mas}}.{{r|Henry2006}}

==Planetary system==
On March 15, 2017, two planets orbiting GJ 3323 were detected by the [[Astronomy:High Accuracy Radial Velocity Planet Searcher|HARPS telescope]], although the discovery team considers GJ 3323 c a planet candidate.<ref name="Astudillo-Defru2017"/> The inner planet, GJ 3323b, may orbit within the [[Astronomy:Circumstellar habitable zone|circumstellar habitable zone]] of its star.<ref>{{Cite journal|last1=Méndez|first1=Abel|last2=Rivera-Valentín|first2=Edgard G.|date=2017-02-23|title=The Equilibrium Temperature of Planets in Elliptical Orbits|journal=The Astrophysical Journal|volume=837|issue=1|pages=L1|doi=10.3847/2041-8213/aa5f13|issn=2041-8213|arxiv = 1702.07314 |bibcode = 2017ApJ...837L...1M |s2cid=119193237 |doi-access=free }}</ref>{{failed verification|reason=Reference does not mention GJ 3323|date=December 2021}}

{{OrbitboxPlanet begin
 | name         = GJ 3323
}}
{{OrbitboxPlanet
 | exoplanet    = b
 | mass_earth   = ≥{{val|2.02|0.26|0.25}}
 | period       = {{val|5.3636|0.0007}}
 | semimajor    = {{val|0.03282|0.00054|0.00056}}
 | eccentricity = {{val|0.23|0.11}}
}}
{{OrbitboxPlanet
 | exoplanet    = c
 | mass_earth   = ≥{{val|2.31|0.50|0.49}}
 | period       = {{val|40.54|0.21|0.19}}
 | semimajor    = {{val|0.1264|0.0021|0.0022}}
 | eccentricity = {{val|0.17|0.21|0.12}}
}}
{{Orbitbox end}}

==References==
{{Reflist|refs=

<ref name="GaiaDR3">{{Cite Gaia DR3|3187115498866675456}}</ref>

<ref name=SIMBAD>{{cite simbad
 | title=LP 656-38 | access-date=2020-12-27 }}</ref>

<ref name=Wright_et_al_2018>{{cite journal
 | title=The stellar rotation-activity relationship in fully convective M dwarfs
 | display-authors=1 | last1=Wright | first1=Nicholas J.
 | last2=Newton | first2=Elisabeth R. | last3=Williams | first3=Peter K. G.
 | last4=Drake | first4=Jeremy J. | last5=Yadav | first5=Rakesh K.
 | journal=Monthly Notices of the Royal Astronomical Society
 | volume=479 | issue=2 | pages=2351–2360 | date=September 2018
 | arxiv=1807.03304 | bibcode=2018MNRAS.479.2351W 
 | doi=10.1093/mnras/sty1670 }}</ref>

<ref name=Bobylev2010>{{cite journal
 | title=Stars outside the Hipparcos list closely encountering the Solar system
 | last=Bobylev | first=V. V.
 | journal=Astronomy Letters
 | volume=36 | issue=11 | pages=816–822 | date=November 2010
 | arxiv=1009.4856 | bibcode=2010AstL...36..816B 
 | doi=10.1134/S1063773710110071 | s2cid=118512652 }}</ref>

<ref name=Sinnott1997>{{cite book
 | first1=Roger W. | last1=Sinnott
 | first2=Michael A. C. | last2=Perryman
 | title=Millennium Star Atlas | page=279
 | volume=1 | year=1997 | isbn=0-933346-84-0
 | publisher=Sky Publishing Corporation and the European Space Agency }}</ref>

<ref name=Schweitzer_et_al_2019>{{cite journal
 | title=The CARMENES search for exoplanets around M dwarfs. Different roads to radii and masses of the target stars
 | display-authors=1 | last1=Schweitzer | first1=A.
 | last2=Passegger | first2=V. M. | last3=Cifuentes | first3=C.
 | last4=Béjar | first4=Victor J. S. | last5=Cortés-Contreras | first5=M.
 | last6=Caballero | first6=José A. | last7=del Burgo | first7=Carlos
 | last8=Czesla | first8=Stefan | last9=Kürster | first9=Martin
 | last10=Montes | first10=David | last11=Zapatero-Osorio | first11=María Rosa
 | last12=Ribas | first12=Ignasi | last13=Reiners | first13=Ansgar
 | last14=Quirrenbach | first14=Andreas | last15=Amado | first15=Pedro J.
 | last16=Aceituno | first16=J. | last17=Anglada-Escudé | first17=Guillem
 | last18=Bauer | first18=Florian F. | last19=Dreizler | first19=Stefan
 | last20=Jeffers | first20=Sandra V. | last21=Guenther | first21=E. W.
 | last22=Henning | first22=Thomas K. | last23=Kaminski | first23=Adrian
 | last24=Lafarga | first24=M. | last25=Marfil | first25=E.
 | last26=Morales | first26=Juan Carlos | last27=Schmitt | first27=Jürgen H. M. M.
 | last28=Seifert | first28=Walter | last29=Solano | first29=E.
 | last30=Tabernero | first30=H. M. | last31=Zechmeister | first31=Mathias
 | journal=Astronomy & Astrophysics
 | volume=625 | id=A68 | pages=16 | date=May 2019
 | arxiv=1904.03231 | bibcode=2019A&A...625A..68S
 | doi=10.1051/0004-6361/201834965 | s2cid=102351979 }}</ref>

<ref name=Davison_et_al_2015>{{cite journal
 | title=A 3D Search for Companions to 12 Nearby M-Dwarfs
 | last1=Davison | first1=Cassy L. | last2=White | first2=Russel J.
 | last3=Henry | first3=Todd J. | last4=Riedel | first4=Adric R.
 | last5=Jao | first5=Wei-Chun | last6=Bailey III | first6=John I.
 | last7=Quinn | first7=Samuel N. | last8=Justin R. | first8=Cantrell
 | last9=John P. | first9=Subasavage | last10=Jen G. | first10=Winters
 | display-authors=1 | journal=The Astronomical Journal
 | year=2015 | volume=149 | issue=3 | page=106
 | bibcode=2015AJ....149..106D | s2cid=9719725
 | arxiv=1501.05012 | doi=10.1088/0004-6256/149/3/106 }}</ref>

<ref name=Soubiran2018>{{cite journal
 | title=Gaia Data Release 2. The catalogue of radial velocity standard stars
 | last1=Soubiran | first1=C. | last2=Jasniewicz | first2=G.
 | last3=Chemin | first3=L. | last4=Zurbach | first4=C.
 | last5=Brouillet | first5=N. | last6=Panuzzo | first6=P.
 | last7=Sartoretti | first7=P. | last8=Katz | first8=D.
 | last9=Le Campion | first9=J. -F. | last10=Marchal | first10=O.
 | last11=Hestroffer | first11=D. | last12=Thévenin | first12=F.
 | last13=Crifo | first13=F. | last14=Udry | first14=S.
 | last15=Cropper | first15=M. | last16=Seabroke | first16=G.
 | last17=Viala | first17=Y. | last18=Benson | first18=K.
 | last19=Blomme | first19=R. | last20=Jean-Antoine | first20=A.
 | last21=Huckle | first21=H. | last22=Smith | first22=M.
 | last23=Baker | first23=S. G. | last24=Damerdji | first24=Y.
 | last25=Dolding | first25=C. | last26=Frémat | first26=Y.
 | last27=Gosset | first27=E. | last28=Guerrier | first28=A.
 | last29=Guy | first29=L. P. | last30=Haigron | first30=R.
 | display-authors=1 | journal=Astronomy and Astrophysics
 | volume=616 | pages=A7 | year=2018
 | bibcode=2018A&A...616A...7S | arxiv=1804.09370
 | doi=10.1051/0004-6361/201832795 | s2cid=52952408 }}</ref>

<ref name="Astudillo-Defru2017">{{cite journal | doi=10.1051/0004-6361/201630153 
 | last1=Astudillo-Defru | first1=Nicola | last2=Forveille | first2=Thierry
 | last3=Bonfils  | first3=Xavier        | last4=Ségransan  | first4=Damien
 | last5=Bouchy   | first5=François      | last6=Delfosse   | first6=Xavier
 | last7=Lovis    | first7=Christophe    | last8=Mayor      | first8=Michel
 | last9=Murgas   | first9=Felipe        | last10=Pepe      | first10=Francesco
 | last11=Santos  | first11=Nuno C.      | last12=Udry      | first12=Stéphane
 | last13=Wünsche | first13=Anaël | display-authors=6
 | year=2017
 | title=The HARPS search for southern extra-solar planets. XLI. A dozen planets around the M&nbsp;dwarfs GJ&nbsp;3138, GJ&nbsp;3323, GJ&nbsp;273, GJ&nbsp;628, and GJ&nbsp;3293
 | journal=Astronomy and Astrophysics
 | volume=602  | at=A88
 | arxiv=1703.05386  | bibcode=2017A&A...602A..88A | s2cid=119418595
 | url=https://www.aanda.org/articles/aa/full_html/2017/06/aa30153-16/aa30153-16.html
}}</ref>

<ref name="Gliese1982">{{cite journal
 | last=Gliese | first=W.
 | title=Photometric parallaxes of nearby main-sequence stars with annual proper motion of 0.7 arcsec or more derived from Eggen's B, V and R, I data
 | journal=Astronomy and Astrophysics Supplement Series
 | volume=47 | date=March 1982 | pages=471–480
 | bibcode=1982A&AS...47..471G }}</ref>

<ref name="Henry2006">{{cite journal
 | last1=Henry | first1=T. J. | last2=Jao | first2=Wei-Chun
 | last3=Subasavage, John P. | last4=Beaulieu | first4=Thomas D.
 | last5=Ianna | first5=Philip A. | last6=Costa | first6=Edgardo
 | last7=Méndez | first7=René A. | display-authors=1
 | title=The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the RECONS 10 Parsec Sample
 | journal=[[Astronomy:The Astronomical Journal|The Astronomical Journal]]
 | volume=132 | issue=6 | pages=2360–2371 | year=2006
 | arxiv=astro-ph/0608230 | bibcode=2006AJ....132.2360H
 | doi=10.1086/508233 | s2cid=15002841
 | url=http://repositorio.uchile.cl/bitstream/2250/126230/1/Henry_Todd.pdf }}</ref>

<ref name="Kirkpatrick2012">{{cite journal
 | last2=Gelino | first2=Christopher R. | last3=Cushing | first3=Michael C.
 | last4=Mace | first4=Gregory N. | last5=Griffith | first5=Roger L.
 | last6=Skrutskie | first6=Michael F. | last7=Marsh | first7=Kenneth A.
 | last8=Wright | first8=Edward L. | last9=Eisenhardt | first9=Peter R.
 | last10=McLean | first10=Ian S. | last11=Mainzer | first11=Amy K.
 | last12=Burgasser | first12=Adam J. | last13=Tinney | first13=Chris G.
 | last14=Parker | first14=Stephen | last15=Salter | first15=Graeme
 | title=Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function | year=2012
 | display-authors=1 | journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]]
 | volume=753 | issue=2 | pages=156
 | arxiv=1205.2122 | doi=10.1088/0004-637X/753/2/156
 | bibcode=2012ApJ...753..156K| s2cid=119279752 }}</ref>

}}

{{Nearest star systems|4}}
{{Stars of Eridanus}}

{{DEFAULTSORT:LHS 1723}}
[[Category:M-type main-sequence stars]]
[[Category:Eridanus (constellation)]]
[[Category:2MASS objects|J05015746-0656459]]
[[Category:Gliese and GJ objects|3323]]

{{Sourceattribution|GJ 3323}}