GJ 1005

{{Short description|Star system in the constellation Cetus}}

{{Sky|00|15|28.11090|−|16|08|01.6303|19.58}}

{{Starbox begin|name=GJ 1005}}

{{Starbox observe

|epoch=J2000

|constell=Cetus

|ra={{RA|00|15|28.11090}}{{cite journal|title=Validation of the new Hipparcos reduction|url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357|s2cid = 18759600}}

|dec={{DEC|-16|08|01.6303}}

|appmag_v=11.483{{cite journal|title=UBV(RI)_C JHK observations of Hipparcos-selected nearby stars|author1=Koen, C.|author2=Kilkenny, D.|author3=van Wyk, F.|author4=Marang, F.|journal=Monthly Notices of the Royal Astronomical Society|volume=403|issue=4|pages=1949–1968|date=2010|bibcode=2010MNRAS.403.1949K|doi=10.1111/j.1365-2966.2009.16182.x|doi-access=free}}

}}

{{Starbox character

|class=M3.5V

}}

{{Starbox astrometry

|radial_v=-26.43 ± 0.1{{cite journal|author=Nidever, David L.|display-authors=etal|date=2013|title=Radial Velocities for 889 Late-Type Stars|journal=The Astrophysical Journal Supplement Series|volume=141|issue=2|pages=503–522|bibcode=2002ApJS..141..503N|doi=10.1086/340570|arxiv=astro-ph/0112477|s2cid=51814894}}

|prop_mo_ra=731.83

|prop_mo_dec=-607.73

|parallax=166.6

|p_error=0.3

|parallax_footnote=

|absmag_v=12.70 ± 0.01 / 15.12 ± 0.09

}}

{{Starbox orbit

|reference=

|period_unitless=4.55726{{±|0.00075|0.00074}} y.{{citation|arxiv=1811.06938|year=2019|title=How to Constrain Your M Dwarf. II. The Mass–Luminosity–Metallicity Relation from 0.075 to 0.70 Solar Masses|doi=10.3847/1538-4357/aaf3bc|last1=Mann|first1=Andrew W.|last2=Dupuy|first2=Trent|last3=Kraus|first3=Adam L.|last4=Gaidos|first4=Eric|last5=Ansdell|first5=Megan|last6=Ireland|first6=Michael|last7=Rizzuto|first7=Aaron C.|last8=Hung|first8=Chao-Ling|last9=Dittmann|first9=Jason|last10=Factor|first10=Samuel|last11=Feiden|first11=Gregory|last12=Martinez|first12=Raquel A.|last13=Ruíz-Rodríguez|first13=Dary|last14=Chia Thao|first14=Pa|journal=The Astrophysical Journal|volume=871|issue=1 |page=63|bibcode=2019ApJ...871...63M |s2cid=119372932 |doi-access=free }}

|axis=0.3037 ± 0.0005

|inclination=143.93{{±|0.25|0.24}}

|node=62.8 ± 0.4

|periastron=JD 2449850.4 ± 0.8

|eccentricity=0.36136{{±|0.00097|0.00098}}

|periarg=166.6 ± 0.5

}}

{{Starbox detail

|source={{cite journal|bibcode=2016AJ....152..141B|doi=10.3847/0004-6256/152/5/141|arxiv=1608.04775|title=The Solar Neighborhood. XXXVII. The Mass–Luminosity Relation for Main-Sequence M Dwarfs|journal=The Astronomical Journal|volume=152|issue=5|pages=141|year=2016|last1=Benedict|first1=G. F.|last2=Henry|first2=T. J.|last3=Franz|first3=O. G.|last4=McArthur|first4=B. E.|last5=Wasserman|first5=L. H.|last6=Jao|first6=Wei-Chun|last7=Cargile|first7=P. A.|last8=Dieterich|first8=S. B.|last9=Bradley|first9=A. J.|last10=Nelan|first10=E. P.|last11=Whipple|first11=A. L.|s2cid=54029447 |doi-access=free }}

|component1=GJ 1005 A

|mass=0.179 ± 0.002

|temperature=3341{{±|224}}{{citation|arxiv=2110.01658|year=2021|title=M dwarf spectral indices at moderate resolution: Accurate Teff and [Fe/H] for 178 southern stars|doi=10.1093/mnras/stab2831 |last1=Costa-Almeida |first1=Ellen |last2=De Mello |first2=Gustavo F Porto |last3=Giribaldi |first3=Riano E. |last4=Lorenzo-Oliveira |first4=Diego |last5=Ubaldo-Melo |first5=Maria L. |journal=Monthly Notices of the Royal Astronomical Society |volume=508 |issue=4 |pages=5148–5162 |doi-access=free }}

|metal_fe=-0.41

|component2=GJ 1005 B

|mass2=0.112 ± 0.001

}}

{{Starbox catalog

|names={{odlist|G=158-50|G2=266-76|HIP=1242|LHS=1047|LP=764-87|LTT=114|2MASS=J00152799-1608008|Gaia DR2=2368293487260807040}}

}}

{{Starbox reference

|Simbad=G+158-50

|ARICNS=01957|an=A

|ARICNS2=01958|an2=B

}}

{{Starbox image

|image={{Location map|100x100|AlternativeMap=Cetus_constellation_map.svg

|alt=GJ 1005 is located in the constellation Cetus.

|caption=Location of GJ 1005 in the constellation Cetus|border=infobox|mark=Red_pog.png|width=300

|label=GJ 1005

|position=top

|lat=27.3

|long=88.5

}}|caption=

}}

{{Starbox end}}

GJ 1005 is a system of two red dwarfs, located in constellation Cetus at 19.6 light-years from Earth.{{r|Hershey}} The primary star is a M4V class star while the secondary is a class M7V.{{cn|date=May 2017}}

The system was observed with the Hubble Space Telescope in the 1990s with its Fine Guidance Sensor.{{Cite journal|last1=Hershey|first1=John L.|last2=Taff|first2=L. G.|date=1998-01-01|title=Hubble Space Telescope Fine Guidance Sensor Astrometry of the Low-Mass Binary L722-22|url=http://stacks.iop.org/1538-3881/116/i=3/a=1440|journal=The Astronomical Journal|language=en|volume=116|issue=3|pages=1440|doi=10.1086/300516|issn=1538-3881|bibcode = 1998AJ....116.1440H |doi-access=free}} This data helped determine the mass of each of the components of L722-22/ LHS 1047 / GJ 1005.