{{Short description|Star in the constellation Boötes}} {{Starbox begin}} {{Starbox observe | epoch=J2000 | constell=[[Boötes]]<ref name=xhip/> | ra={{RA|14|49|32.38200}}<ref name=dr3/> | dec={{DEC|+51|22|28.2117}}<ref name=dr3/> | appmag_v=6.51<ref name="MERMILLIOD"/> }} {{Starbox character | type=[[main sequence]]<ref name=dr3/> | class=F3V<ref name=abt1981/> | r-i = | v-r = | b-v = +0.40<ref name="MERMILLIOD"/> | u-b = +0.00<ref name="MERMILLIOD"/> | variable= }} {{Starbox astrometry | radial_v=−6.90<ref name="Gontcharov"/> | prop_mo_ra=+15.592<ref name=dr3/> | prop_mo_dec=+1.961<ref name=dr3/> | parallax=19.1763 | p_error=0.0147 | parallax_footnote=<ref name=dr3/> | absmag_v=+2.93<ref name=xhip/> }} {{Starbox detail | mass=1.4<ref name=tic/> | radius=1.7<ref name=tic/> | luminosity=5.6<ref name=tic/> | temperature=6,743<ref name=tic/> | metal_fe=+0.04<ref name=casagrande2011/> | gravity=4.12<ref name=tic/> | rotational_velocity= | age_myr=1.80<ref name=casagrande2011/> }} {{Starbox catalog | names=[[Bonner Durchmusterung|BD]]+51°1957, [[Henry Draper Catalogue|HD]] 131040, [[Hipparcos catalogue|HIP]] 72508, [[Harvard Revised catalogue|HR]] 5537, [[Smithsonian Astrophysical Observatory catalogue|SAO]] 29296<ref name=simbad/> }} {{Starbox reference | Simbad=HD+131040 }} {{Starbox end}} '''HD 131040''' is an [[F-type main-sequence star]] in the northern [[constellation]] of [[Boötes]]. It has an [[apparent magnitude]] of 6.51 and is 170 light years away.
The brightness of HD 131040 has been reported to vary slightly by 0.04 magnitudes.<ref name="Adelman2000"/> [[Radial velocity]] variations and an apparent over-luminosity have led to the theory that D 131040 is a [[spectroscopic binary]].<ref name=msc/>
Multiple star catalogues list a 10th-magnitude companion at an [[angular separation]] of {{val|15.1|ul=″}} along a [[position angle]] of 93°, and a 14th-magnitude companion at a separation of 62".<ref name=wds/> Neither is thought to be physically associated with HD 131040, but there is a possible [[white dwarf]] 9.4" away, which is at a similar distance and has a similar [[proper motion]].<ref name=msc/>
==References== <references> <ref name=simbad>{{cite simbad |title=HD 131040 |access-date=2025-04-18 }}</ref>
<ref name=dr3>{{cite Gaia DR3|1593537118559292544}}</ref>
<ref name=abt1981>{{cite journal |bibcode=1981ApJS...45..437A |title=Visual multiples. VII. MK classifications |last1=Abt |first1=H. A. |journal=The Astrophysical Journal Supplement Series |date=1981 |volume=45 |page=437 |doi=10.1086/190719 }}</ref>
<ref name=xhip>{{cite journal |bibcode=2012AstL...38..331A |title=XHIP: An extended hipparcos compilation |last1=Anderson |first1=E. |last2=Francis |first2=Ch. |journal=Astronomy Letters |date=2012 |volume=38 |issue=5 |page=331 |doi=10.1134/S1063773712050015 |arxiv=1108.4971 }}</ref>
<ref name=tic>{{cite journal |bibcode=2019AJ....158..138S |title=The Revised TESS Input Catalog and Candidate Target List |last1=Stassun |first1=Keivan G. |last2=Oelkers |first2=Ryan J. |last3=Paegert |first3=Martin |last4=Torres |first4=Guillermo |last5=Pepper |first5=Joshua |last6=De Lee |first6=Nathan |last7=Collins |first7=Kevin |last8=Latham |first8=David W. |last9=Muirhead |first9=Philip S. |last10=Chittidi |first10=Jay |last11=Rojas-Ayala |first11=Bárbara |last12=Fleming |first12=Scott W. |last13=Rose |first13=Mark E. |last14=Tenenbaum |first14=Peter |last15=Ting |first15=Eric B. |last16=Kane |first16=Stephen R. |last17=Barclay |first17=Thomas |last18=Bean |first18=Jacob L. |last19=Brassuer |first19=C. E. |last20=Charbonneau |first20=David |last21=Ge |first21=Jian |last22=Lissauer |first22=Jack J. |last23=Mann |first23=Andrew W. |last24=McLean |first24=Brian |last25=Mullally |first25=Susan |last26=Narita |first26=Norio |last27=Plavchan |first27=Peter |last28=Ricker |first28=George R. |last29=Sasselov |first29=Dimitar |last30=Seager |first30=S. |journal=The Astronomical Journal |date=2019 |volume=158 |issue=4 |page=138 |doi=10.3847/1538-3881/ab3467 |doi-access=free |arxiv=1905.10694 |display-authors=1 }}</ref>
<ref name=casagrande2011>{{cite journal |bibcode=2011A&A...530A.138C |title=New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey |last1=Casagrande |first1=L. |last2=Schönrich |first2=R. |last3=Asplund |first3=M. |last4=Cassisi |first4=S. |last5=Ramírez |first5=I. |last6=Meléndez |first6=J. |last7=Bensby |first7=T. |last8=Feltzing |first8=S. |journal=Astronomy and Astrophysics |date=2011 |volume=530 |doi=10.1051/0004-6361/201016276 |arxiv=1103.4651 }}</ref>
<ref name="Gontcharov">{{citation | last1 = Gontcharov | first1 = G. A. | title = Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system | journal = Astronomy Letters | volume = 32 | issue = 11 | pages = 759–771 | date = November 2006 | doi = 10.1134/S1063773706110065 | bibcode=2006AstL...32..759G | postscript=. | arxiv = 1606.08053 | s2cid = 119231169 }}</ref>
<ref name="MERMILLIOD">{{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV Data. SIMBAD | date=1986 | bibcode=1986EgUBV........0M | postscript=. }}</ref>
<ref name="Adelman2000">{{citation | title=On the Variability of F1-F9 Luminosity Class III-V Stars | last1=Adelman, S. J. | last2=Coursey, B. C. | last3=Harris, E. A. | journal=Information Bulletin on Variable Stars | issue=5003 | page=1 | date=December 2000 | volume=5003 | bibcode=2000IBVS.5003....1A }}</ref>
<ref name=wds>{{citation | display-authors=1 | last1=Mason | first1=B. D. | last2=Wycoff | first2=G. L. | last3=Hartkopf | first3=W. I. | last4=Douglass | first4=G. G. | last5=Worley | first5=C. E. | title=The Washington Visual Double Star Catalog | journal=The Astronomical Journal | year=2014 | volume=122 | issue=6 | page=3466 | bibcode=2001AJ....122.3466M | url=http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds | access-date=2015-07-22 | doi = 10.1086/323920 | doi-access=free }}</ref>
<ref name=msc>{{cite journal |bibcode=2018ApJS..235....6T |title=The Updated Multiple Star Catalog |last1=Tokovinin |first1=Andrei |journal=The Astrophysical Journal Supplement Series |date=2018 |volume=235 |issue=1 |page=6 |doi=10.3847/1538-4365/aaa1a5 |doi-access=free |arxiv=1712.04750 }}</ref> </references>
==External links== * [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%205537 HR 5537] * [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J14495%2b5122A CCDM J14495+5122] * [http://aladin.u-strasbg.fr/AladinPreview?-c=HD+131040&ident=HD+131040&submit=Aladin+previewer Image HD 131040]
{{Stars of Boötes}}
[[Category:Boötes]] [[Category:Henry Draper Catalogue objects|131040]] [[Category:Spectroscopic binaries]] [[Category:Hipparcos objects|072508]] [[Category:F-type main-sequence stars]] [[Category:Bright Star Catalogue objects|5537]] [[Category:Durchmusterung objects]]