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{{Short description|Star in the constellation Eridanus}}
<!-- Please do not remove or change this AfD message until the issue is settled -->
{{Starbox begin}}
{{AfDM|page=GJ 1062 (2nd nomination)|year=2013|month=August|day=24|substed=yes|origtag=afdx|help=off}}
{{Starbox observe
<!-- End of AfD message, feel free to edit beyond this point -->
| epoch = [[J2000.0]]
{{no footnotes|date=August 2012}}
| constell = [[Eridanus (constellation)|Eridanus]]
'''GJ 1062''' is a [[red dwarf|M2]] [[Stellar classification|class]] [[star]] located at [[Right ascension]] 03<sup>h</sup> 38<sup>m</sup> 15<sup>s</sup> and [[declination]] -11° 29” 2 in the [[constellation]] of [[Eridanus (constellation)|Eridanus]]. The star has a total [[proper motion]] of 3.033 [[Minute of arc#Astronomy|"]]/[[year|yr]], making it the 25th fastest-moving star in terms of angular position as seen from Earth, and its [[radial velocity]] is -18 [[kilometres per second|km/s]]. At a [[Distance measures (cosmology)|distance]] of 16.03 [[parsec]]s and with an [[absolute magnitude]] of 13.1, this [[star]] has an [[apparent magnitude]] of 14.6 when [[Astronomical observation|viewed]] from [[Earth]].
| ra = {{RA|03|38|15.69799}}<ref name=GaiaDR3/>
| dec = {{DEC|−11|29|13.5050}}<ref name=GaiaDR3/>
| appmag_v = +13.010<ref name=Houdebine2010/>
}}
{{Starbox character
| type =
| class = M2.5VI<ref name=Gizis1977/>
| b-v = +1.605<ref name=UBV/>
| u-b = +1.385<ref name=UBV />
| r-i = 1.184<ref name=Houdebine2010/>
| variable =
}}
{{Starbox astrometry
| radial_v = {{val|−84.88|0.56}}<ref name=GaiaDR3/>
| prop_mo_ra = {{val|1458.201|fmt=commas}}
| prop_mo_dec = {{val|−2696.545|fmt=commas}}
| pm_footnote = <ref name=GaiaDR3/>
| parallax = 61.8861
| p_error = 0.0220
| parallax_footnote = <ref name=GaiaDR3/>
| absmag_v = 10.608<ref name=Houdebine_et_al_2016/>
}}
{{Starbox detail
| mass = 0.255<ref name=Winters_et_al_2019/>
| radius = {{val|0.411|0.051|u=solar radius}}<ref name=Houdebine2010/><br>{{val|0.372|0.076|u=solar radius}}<ref name=Houdebine_et_al_2016/><br>{{val|0.202|0.012}}<ref name=Kesseli_et_al_2019/>
| luminosity = 0.0055<ref name=Houdebine2010/>
| temperature = {{val|3488|50|fmt=commas}}<ref name=Houdebine2010/>
| gravity =
| metal_fe = {{val|−0.28|0.15}}<ref name=Kesseli_et_al_2019/>
| rotational_velocity = 9.80<ref name=Houdebine2010/>
| age_gyr =
}}
{{Starbox catalog
| names = {{odlist | GJ=1062 | LHS=20 | LTT=1717 | Ross=578 | 2MASS=J03381558-1129102 }}<ref name="SIMBAD"/>
}}
{{Starbox reference
| Simbad = GJ+1062
| ARICNS = 02025
}}
{{Starbox end}}


'''GJ 1062''' is a single<ref name=Winters_et_al_2019/> [[red dwarf]] [[star]] in the [[constellation]] [[Eridanus (constellation)|Eridanus]], positioned about two degrees to the SSE of [[Epsilon Eridani]].<ref name=Sinnott_Perryman_1997/> It is also known as [[Luyten Half-Second catalogue|LHS]] 20 and [[Frank Elmore Ross|Ross]] 578. The star is invisible to the naked eye with an [[apparent visual magnitude]] of +13.0,<ref name=Houdebine2010/> requiring a telescope with at least a {{convert|25|cm|in|0|abbr=on}} [[aperture]] to view.<ref name=ICQ/> It is located at a distance of 52.7&nbsp;[[light year]]s from the [[Sun]] based on [[stellar parallax|parallax]], but is drifting closer with a [[radial velocity]] of −85&nbsp;km/s.<ref name=GaiaDR3/> The star has a high [[proper motion]], traversing the sky at the rate of {{val|3.033|ul=arcseconds}} per year.<ref name=Luyten1995/>
The star is also known as [[Luyten Half-Second catalogue|LHS]]20, YPC 757.00 and [[Frank Elmore Ross|Ross]] 578.

This is an [[M-type star|M-type]] [[subdwarf]] star with a [[stellar classification]] of M2.5VI.<ref name=Gizis1977/> It was one of the first three subdwarfs to be definitively identified by [[Gerard Kuiper|G. Kuiper]] in 1940, the other two being [[Kapteyn's Star]] and [[Wolf 1106]].<ref name=Kotoneva_et_al_2005/> GJ 1062 is considered a likely member of the [[galactic halo|halo]] population, and thus is a [[MACHO]].<ref name=Fuchs_Jahreiß_1998/>


== References ==
== References ==
{{reflist|refs=
*{{Cite web
| author = University of Heidelberg
| title = ARICNS ARI Data Base for Nearby Stars
| url= http://www.ari.uni-heidelberg.de/datenbanken/aricns/cnspages/4c02025.htm
| accessdate = 31 July 2012}}


<ref name=GaiaDR3>{{Cite Gaia DR3|5115463180914712448}}</ref>
*{{Cite book
| first= Michael E.|last= Bakich
| title = The Cambridge Guide to the Constellations Cambridge University Press | page=95
| url= http://books.google.com.au/books?id=tLMXiFhTnRYC&pg=PA95&lpg=PA95&dq=Ross+578++++star&source=bl&ots=GRgjGCKVcV&sig=V3YOK1fGBet6vxyIg4vQe6xyEqI&hl=en&sa=X&ei=eJgXUOCdEciciQf68oCwCA&sqi=2&ved=0CEoQ6AEwAQ#v=onepage&q=Ross%20578%20%20%20%20star&f=false
| accessdate = 31 July 2012}}


<ref name="SIMBAD">{{cite simbad | title=GJ 1062 | access-date=4 December 2016}}</ref>
*{{Cite web
| author= University of Tennessee Department of Physics and Astronomy
| title = Table:Proper Motion: Stars with very large proper motion.
| url= http://csep10.phys.utk.edu/astr162/lect/motion/table.html
| accessdate = 31 July 2012}}


<ref name=Houdebine_et_al_2016>{{cite journal
*Martin V. Zombeck Handbook of Space Astronomy And Astrophysics Cambridge University Press. 2007 page 86.
| 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 }}</ref>


<ref name=Luyten1995>{{cite journal
{{Nearest star systems|11}}
| journal=VizieR Online Data Catalog
| title=NLTT Catalogue | date=June 1995
| last=Luyten | first=W. J.
| bibcode=1995yCat.1098....0L }}</ref>

<ref name=Sinnott_Perryman_1997>{{cite book
| 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 }}</ref>

<ref name=ICQ>{{cite web
| title=The astronomical magnitude scale
| work=International Comet Quarterly
| url=http://www.icq.eps.harvard.edu/MagScale.html
| access-date=2020-12-31 }}</ref>

<ref name=Fuchs_Jahreiß_1998>{{cite journal
| 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 }}</ref>

<ref name=Winters_et_al_2019>{{cite journal
| 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 }}</ref>

<ref name=Gizis1977>{{cite journal
| 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 }}</ref>

<ref name=UBV>{{cite journal
| 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 }}</ref>

<ref name=Houdebine2010>{{cite journal
| 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 }}</ref>

<ref name=Kesseli_et_al_2019>{{cite journal
| 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 }}</ref>

<ref name=Kotoneva_et_al_2005>{{cite journal
| 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 }}</ref>

}}


{{Stars of Eridanus}}
{{Stars of Eridanus}}


[[Category:M-type main-sequence stars]]
[[Category:M-type subdwarfs]]
[[Category:Eridanus (constellation)]]
[[Category:Eridanus (constellation)]]
[[Category:Gliese and GJ objects|1062]]
[[Category:Gliese and GJ objects|1062]]
[[Category:Ross objects|578]]

[[Category:2MASS objects|J03381558-1129102]]

[[Category:TIC objects|38403917]]
{{star-stub}}

Latest revision as of 09:46, 25 September 2023

GJ 1062
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus
Right ascension 03h 38m 15.69799s[1]
Declination −11° 29′ 13.5050″[1]
Apparent magnitude (V) +13.010[2]
Characteristics
Spectral type M2.5VI[3]
U−B color index +1.385[4]
B−V color index +1.605[4]
R−I color index 1.184[2]
Astrometry
Radial velocity (Rv)−84.88±0.56[1] km/s
Proper motion (μ) RA: 1,458.201 mas/yr[1]
Dec.: −2,696.545 mas/yr[1]
Parallax (π)61.8861 ± 0.0220 mas[1]
Distance52.70 ± 0.02 ly
(16.159 ± 0.006 pc)
Absolute magnitude (MV)10.608[5]
Details
Mass0.255[6] M☉
Radius0.411±0.051 R☉[2]
0.372±0.076 R☉[5]
0.202±0.012[7] R☉
Luminosity0.0055[2] L☉
Temperature3,488±50[2] K
Metallicity [Fe/H]−0.28±0.15[7] dex
Rotational velocity (v sin i)9.80[2] km/s
Other designations
GJ 1062, LHS 20, LTT 1717, Ross 578, 2MASS J03381558-1129102[8]
Database references
SIMBADdata
ARICNSdata

GJ 1062 is a single[6] red dwarf star in the constellation Eridanus, positioned about two degrees to the SSE of Epsilon Eridani.[9] 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,[2] requiring a telescope with at least a 25 cm (10 in) aperture to view.[10] 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.[1] The star has a high proper motion, traversing the sky at the rate of 3.033 arcseconds per year.[11]

This is an M-type subdwarf star with a stellar classification of M2.5VI.[3] 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.[12] GJ 1062 is considered a likely member of the halo population, and thus is a MACHO.[13]

References

[edit]
  1. ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ a b c d e f g 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): 1657. Bibcode:2010MNRAS.407.1657H. doi:10.1111/j.1365-2966.2010.16827.x.
  3. ^ a b Gizis, John E. (1997). "M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale". Astronomical Journal. 113: 806–822. arXiv:astro-ph/9611222. Bibcode:1997AJ....113..806G. doi:10.1086/118302. S2CID 16863021.
  4. ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
  5. ^ a b Houdebine, E. R.; et al. (May 2016). "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". The Astrophysical Journal. 822 (2): 38. arXiv:1604.07920. Bibcode:2016ApJ...822...97H. doi:10.3847/0004-637X/822/2/97. S2CID 119118088. 97.
  6. ^ a b Winters, Jennifer G.; et al. (June 2019). "The Solar Neighborhood. XLV. The Stellar Multiplicity Rate of M Dwarfs Within 25 pc". The Astronomical Journal. 157 (6): 32. arXiv:1901.06364. Bibcode:2019AJ....157..216W. doi:10.3847/1538-3881/ab05dc. S2CID 86859146. 216.
  7. ^ a b Kesseli, Aurora Y.; et al. (February 2019). "Radii of 88 M Subdwarfs and Updated Radius Relations for Low-metallicity M-dwarf Stars". The Astronomical Journal. 157 (2): 17. arXiv:1810.07702. Bibcode:2019AJ....157...63K. doi:10.3847/1538-3881/aae982. S2CID 119325209. 63.
  8. ^ "GJ 1062". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 4 December 2016.
  9. ^ Sinnott, Roger W.; Perryman, Michael A. C. (1997). Millennium Star Atlas. Vol. 1. Sky Publishing Corporation and the European Space Agency. p. 308. ISBN 0-933346-84-0.
  10. ^ "The astronomical magnitude scale". International Comet Quarterly. Retrieved 2020-12-31.
  11. ^ Luyten, W. J. (June 1995). "NLTT Catalogue". VizieR Online Data Catalog. Bibcode:1995yCat.1098....0L.
  12. ^ Kotoneva, E.; et al. (August 2005). "A study of Kapteyn's star". Astronomy and Astrophysics. 438 (3): 957–962. Bibcode:2005A&A...438..957K. doi:10.1051/0004-6361:20042287.
  13. ^ Fuchs, B.; Jahreiß, H. (January 1998). "Halo stars in the immediate solar neighbourhood". Astronomy and Astrophysics. 329: 81. arXiv:astro-ph/9708209. Bibcode:1998A&A...329...81F.
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