GJ 1062
{{Short description|Star in the constellation Eridanus}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000.0
| constell = Eridanus
| dec = {{DEC|−11|29|13.5050}}
}}
{{Starbox character
| type =
| variable =
}}
{{Starbox astrometry
| radial_v = {{val|−84.88|0.56}}
| prop_mo_ra = {{val|1458.201|fmt=commas}}
| prop_mo_dec = {{val|−2696.545|fmt=commas}}
| parallax = 61.8861
| p_error = 0.0220
}}
{{Starbox detail
| radius = {{val|0.411|0.051|u=solar radius}}
{{val|0.372|0.076|u=solar radius}}
{{val|0.202|0.012}}
| temperature = {{val|3488|50|fmt=commas}}
| gravity =
| metal_fe = {{val|−0.28|0.15}}
| age_gyr =
}}
{{Starbox catalog
| names = {{odlist | GJ=1062 | LHS=20 | LTT=1717 | Ross=578 | 2MASS=J03381558-1129102 }}
}}
{{Starbox reference
| Simbad = GJ+1062
| ARICNS = 02025
}}
{{Starbox end}}
GJ 1062 is a single red dwarf star in the constellation Eridanus, positioned about two degrees to the SSE of Epsilon Eridani. It is also known as LHS 20 and Ross 578. The star is invisible to the naked eye with an apparent visual magnitude of +13.0, requiring a telescope with at least a {{convert|25|cm|in|0|abbr=on}} aperture to view. It is located at a distance of 52.7 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −85 km/s. The star has a high proper motion, traversing the sky at the rate of {{val|3.033|ul=arcseconds}} per year.
This is an M-type subdwarf star with a stellar classification of M2.5VI. It was one of the first three subdwarfs to be definitively identified by G. Kuiper in 1940, the other two being Kapteyn's Star and Wolf 1106. GJ 1062 is considered a likely member of the halo population, and thus is a MACHO.
References
{{reflist|refs=
{{Cite Gaia DR3|5115463180914712448}}
{{cite simbad | title=GJ 1062 | access-date=4 December 2016}}
| title=Rotation-Activity Correlations in K and M Dwarfs. I. Stellar Parameters and Compilations of v sin I and P/sin I for a Large Sample of Late-K and M Dwarfs
| last1=Houdebine | first1=E. R. | last2=Mullan | first2=D. J.
| last3=Paletou | first3=F. | last4=Gebran | first4=M.
| display-authors=1 | journal=The Astrophysical Journal
| volume=822 | issue=2 | id=97 | pages=38 | date=May 2016
| arxiv=1604.07920 | bibcode=2016ApJ...822...97H
| doi=10.3847/0004-637X/822/2/97 | s2cid=119118088 | doi-access=free }}
| journal=VizieR Online Data Catalog
| title=NLTT Catalogue | date=June 1995
| last=Luyten | first=W. J.
| bibcode=1995yCat.1098....0L }}
| first1=Roger W. | last1=Sinnott
| first2=Michael A. C. | last2=Perryman
| title=Millennium Star Atlas | page=308
| volume=1 | year=1997 | isbn=0-933346-84-0
| publisher=Sky Publishing Corporation and the European Space Agency }}
| title=The astronomical magnitude scale
| work=International Comet Quarterly
| url=http://www.icq.eps.harvard.edu/MagScale.html
| access-date=2020-12-31 }}
| title=Halo stars in the immediate solar neighbourhood
| last1=Fuchs | first1=B. | last2=Jahreiß | first2=H.
| journal=Astronomy and Astrophysics | volume=329 | page=81 | date=January 1998
| arxiv=astro-ph/9708209 | bibcode=1998A&A...329...81F }}
| title=The Solar Neighborhood. XLV. The Stellar Multiplicity Rate of M Dwarfs Within 25 pc
| display-authors=1 | last1=Winters | first1=Jennifer G.
| last2=Henry | first2=Todd J. | last3=Jao | first3=Wei-Chun
| last4=Subasavage | first4=John P. | last5=Chatelain | first5=Joseph P.
| last6=Slatten | first6=Ken | last7=Riedel | first7=Adric R.
| last8=Silverstein | first8=Michele L. | last9=Payne | first9=Matthew J.
| journal=The Astronomical Journal
| volume=157 | issue=6 | id=216 | pages=32 | date=June 2019
| arxiv=1901.06364 | bibcode=2019AJ....157..216W
| doi=10.3847/1538-3881/ab05dc | s2cid=86859146 | doi-access=free }}
| last=Gizis | first=John E.
| title=M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale
| journal=Astronomical Journal
| volume=113 | pages=806–822 | date=1997
| doi=10.1086/118302 | arxiv=astro-ph/9611222
| bibcode=1997AJ....113..806G | s2cid=16863021 }}
| last=Mermilliod | first=J.-C.
| title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)
| journal=Catalogue of Eggen's UBV Data
| date=1986 | bibcode= 1986EgUBV........0M
| url = http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1 }}
| last=Houdebine | first=E. R.
| title=Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars
| journal=Monthly Notices of the Royal Astronomical Society
| volume=407 | issue=3 | page=1657 | date=2010
| doi=10.1111/j.1365-2966.2010.16827.x | doi-access=free
| bibcode=2010MNRAS.407.1657H }}
| title=Radii of 88 M Subdwarfs and Updated Radius Relations for Low-metallicity M-dwarf Stars
| last1=Kesseli | first1=Aurora Y. | last2=Kirkpatrick | first2=J. Davy
| last3=Fajardo-Acosta | first3=Sergio B. | last4=Penny | first4=Matthew T.
| last5=Gaudi | first5=B. Scott | last6=Veyette | first6=Mark
| last7=Boeshaar | first7=Patricia C. | last8=Henderson | first8=Calen B.
| last9=Cushing | first9=Michael C. | last10=Calchi-Novati | first10=Sebastiano
| last11=Shvartzvald | first11=Y. | last12=Muirhead | first12=Philip S.
| display-authors=1 | journal=The Astronomical Journal
| volume=157 | issue=2 | id=63 | pages=17 | date=February 2019
| arxiv=1810.07702 | bibcode=2019AJ....157...63K
| doi=10.3847/1538-3881/aae982 | s2cid=119325209 | doi-access=free }}
| title=A study of Kapteyn's star
| display-authors=1 | last1=Kotoneva | first1=E.
| last2=Innanen | first2=K. | last3=Dawson | first3=P. C.
| last4=Wood | first4=P. R. | last5=De Robertis | first5=M. M.
| journal=Astronomy and Astrophysics
| volume=438 | issue=3 | date=August 2005 | pages=957–962
| doi=10.1051/0004-6361:20042287 | bibcode=2005A&A...438..957K | doi-access=free }}
}}
{{Stars of Eridanus}}