Star in the constellation Virgo
HD 126053 is theHenry Draper Catalogue designation for a star in the equatorialconstellation ofVirgo . It has anapparent magnitude of 6.25,[ 3] Bortle scale , it requires dark suburban or rural skies to view.Parallax measurements made by theHipparcos spacecraft provide an estimated distance of 57 light years to this star.[ 2] radial velocity of −19.2 km/s.[ 3]
This star is considered asolar analog —meaning that it isphotometrically analogous to the Sun.[ 7] metal poor .[ 13] magnetic activity cycle. It shares acommon proper motion through space with thespectroscopic binary star systemHD 122742 , and in the past the three may have formed a triple star system. In theBright Star Catalogue , it was noted as having aninfrared excess . This may have been accreted from the HD 122742 system when the three stars were closer to each other.[ 15]
In 2012, abrown dwarf was discovered orbiting this star at a distance of 2630AU . This brown dwarf has a low temperature and is a T dwarf, with an estimated spectral type of T8p in the discovery paper. Discrepancies in the Y andK bands , likely due to lowmetallicity .[ 13] subdwarfs , were revisited. This led to a re-classification of sdT7.5 and a metallicity of [M/H]= −0.35.[ 6]
^a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5): 331.arXiv :1108.4971 Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 . ^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 atVizieR .^a b c d e Soubiran, C.; et al. (April 2013), "The catalogue of radial velocity standard stars for Gaia. I. Pre-launch release",Astronomy & Astrophysics ,552 : 11,arXiv :1302.1905 Bibcode :2013A&A...552A..64S ,doi :10.1051/0004-6361/201220927 ,S2CID 56094559 , A64. ^a b Martínez-Arnáiz, R.; et al. (September 2010),"Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter" (PDF) ,Astronomy and Astrophysics ,520 : A79,arXiv :1002.4391 Bibcode :2010A&A...520A..79M ,doi :10.1051/0004-6361/200913725 ,S2CID 43455849 , archived fromthe original (PDF) on 2017-09-22, retrieved2018-11-04 . ^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)",Catalogue of Eggen's UBV Data ,SIMBAD ,Bibcode :1986EgUBV........0M . ^a b c Burgasser, Adam J.; Schneider, Adam C.; Meisner, Aaron M.; Caselden, Dan; Hsu, Chih-Chun; Gerasimov, Roman; Aganze, Christian; Softich, Emma; Karpoor, Preethi (2024-11-08)."New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs" .The Astrophysical Journal .982 (2): 79.arXiv :2411.01378 Bibcode :2025ApJ...982...79B .doi :10.3847/1538-4357/adb39f ^a b c Do Nascimento, J. D.; et al. (September 2010), "Rotation and lithium abundance of solar-analog stars. Theoretical analysis of observations",Astronomy and Astrophysics ,519 : 9,arXiv :1006.3861 Bibcode :2010A&A...519A.101D ,doi :10.1051/0004-6361/200811026 ,S2CID 56098215 , A101. ^ Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics",Astronomy & Astrophysics ,367 (2):521– 24,arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P ,doi :10.1051/0004-6361:20000451 ,S2CID 425754 . ^ Eiroa, C.; et al. (July 2013), "DUst around NEarby Stars. The survey observational results",Astronomy & Astrophysics ,555 : A11,arXiv :1305.0155 Bibcode :2013A&A...555A..11E ,doi :10.1051/0004-6361/201321050 ,S2CID 377244 . ^a b c Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample",The Astronomical Journal 132 (1):161– 170,arXiv :astro-ph/0603770 Bibcode :2006AJ....132..161G ,doi :10.1086/504637 ,S2CID 119476992 . ^ Baliunas, S.; Sokoloff, D.; Soon, W. (1996), "Magnetic Field and Rotation in Lower Main-Sequence Stars: an Empirical Time-dependent Magnetic Bode's Relation?",Astrophysical Journal Letters 457 (2): L99,Bibcode :1996ApJ...457L..99B ,doi :10.1086/309891 ^ Vican, Laura (June 2012), "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey",The Astronomical Journal ,143 (6): 135,arXiv :1203.1966 Bibcode :2012AJ....143..135V ,doi :10.1088/0004-6256/143/6/135 ,S2CID 118539505 . ^a b c d e Pinfield, D. J.; et al. (May 2012), "Discovery of the benchmark metal-poor T8 dwarf BD +01° 2920B",Monthly Notices of the Royal Astronomical Society 422 (3):1922– 1932,arXiv :1201.3243 Bibcode :2012MNRAS.422.1922P ,doi :10.1111/j.1365-2966.2012.20549.x S2CID 6257539 . ^ "HD 126053" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2015-11-13 .{{cite web }}: CS1 maint: postscript (link )^ Frisch, P. C. (April 1993), "G-star astropauses - A test for interstellar pressure",Astrophysical Journal, Part 1 ,407 (1):198– 206,Bibcode :1993ApJ...407..198F ,doi :10.1086/172505 .
