Editing Sagitta (section)

====Stars with exoplanets====
[[Image:Messier 71 Hubble WikiSky.jpg|thumb|right|alt=Several hundred stars of different brightnesses and colours scattered on a black background|[[Messier 71]] globular cluster]]

[[HD 231701]] is a [[F-type main sequence star|yellow-white main sequence star]] hotter and larger than the Sun, with a [[Jupiter]]-like [[planet]] that was discovered in 2007 by the [[methods of detecting extrasolar planets#Radial velocity|radial velocity technique]]. The planet orbits at a distance of {{Val|0.57|ul=AU}} from the star with a period of 141.6&nbsp;days.<ref name="Fischer2007">{{cite journal | title=Five Intermediate-Period Planets from the N2K Sample | last1=Fischer | first1=Debra A. | last2=Vogt | first2=Steven S. | last3=Marcy | first3=Geoffrey W. | last4=Butler | first4=R. Paul | last5=Sato | first5=Bun'ei | last6=Henry | first6=Gregory W. | last7=Robinson | first7=Sarah | last8=Laughlin | first8=Gregory | last9=Ida | first9=Shigeru | journal=[[The Astrophysical Journal]] | volume=669 | issue=2 | pages=1336–1344 | year=2007 | arxiv=0704.1191 | bibcode=2007ApJ...669.1336F | doi=10.1086/521869 | s2cid=7774321 }}</ref> It has a mass of at least 1.13 Jupiter masses.<ref>{{cite journal
 | title=Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810
 | last1=Ment | first1=Kristo | last2=Fischer | first2=Debra A.
 | last3=Bakos | first3=Gaspar | last4=Howard | first4=Andrew W.
 | last5=Isaacson | first5=Howard | display-authors=1
 | journal=The Astronomical Journal
 | volume=156 | issue=5 | at=213 | year=2018
 | arxiv=1809.01228 | bibcode=2018AJ....156..213M
 | doi=10.3847/1538-3881/aae1f5 | s2cid=119243619 | doi-access=free }}</ref> 

HAT-P-34 is a star {{val|1.392|0.047}} times as massive as the Sun with {{val|1.535|0.135|0.102}} times its radius and {{val|3.63|0.75|0.51}} times its luminosity. With an apparent magnitude of 10.4,<ref name="Bakos2012"/> it is {{val|819|9|u=light-years}} distant.<ref name=Gaia-DR2hat34>{{cite DR2|1810218734055374720}}</ref> A planet {{val|3.328|0.211}} times as massive as Jupiter was discovered transiting it in 2012. With a period of 5.45&nbsp;days and a distance of {{val|0.06|u=AU}} from its star, it has an estimated surface temperature of {{val|1520|60|fmt=commas|u=K}}.<ref name="Bakos2012">{{cite journal | title=HAT-P-34b – HAT-P-37b: Four Transiting Planets More Massive Than Jupiter Orbiting Moderately Bright Stars | last1=Bakos | first1=G. Á. | last2=Hartman | first2=J. D. | last3=Torres | first3=G. | last4=Béky | first4=B. | last5=Latham | first5=D. W. | last6=Buchhave | first6=L. A. | last7=Csubry | first7=Z. | last8=Kovács | first8=Géza | last9=Bieryla | first9=A. | last10=Quinn | first10=S. | last11=Szklenár | first11=T. | last12=Esquerdo | first12=G. A. | last13=Shporer | first13=A. | last14=Noyes | first14=R. W. | last15=Fischer | first15=D. A. | last16=Johnson | first16=J. A. | last17=Howard | first17=A. W. | last18=Marcy | first18=G. W. | last19=Sato | first19=B. | last20=Penev | first20=K. | last21=Everett | first21=M. | last22=Sasselov | first22=D. D. | last23=Fűrész | first23=G. | last24=Stefanik | first24=R. P. | last25=Lázár | first25=J. | last26=Papp | first26=I. | last27=Sári | first27=P. | journal=[[The Astronomical Journal]] | volume=144 | issue=1 | pages=19–32 | date=2012 | arxiv=1201.0659 | bibcode=2012AJ....144...19B | doi=10.1088/0004-6256/144/1/19 | s2cid=119291677 }}</ref> 

[[15 Sagittae]] is a [[solar analog]]—a star similar to the Sun, with {{val|1.08|0.04}} times its mass, {{val|1.115|0.021}} times its radius and {{val|1.338|0.03}} times its luminosity. It has an apparent magnitude of 5.80.<ref name=Anderson2012>{{citation
 | title=XHIP: An extended hipparcos compilation
 | last1=Anderson | first1=E. | last2=Francis | first2=Ch.
 | journal=Astronomy Letters | postscript=.
 | arxiv=1108.4971 | volume=38 | issue=5 | page=331 | year=2012
 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | s2cid=119257644 }}</ref> It has an L4 brown dwarf substellar companion that is around the same size as Jupiter but 69 times as massive with a surface temperature of between 1,510 and {{val|1850|fmt=commas|u=K}}, taking around 73.3&nbsp;years to complete an orbit around the star.<ref name=Crepp2012/> The system is estimated to be {{val|2.5|1.8}} billion years old.<ref name=Crepp2012>{{cite journal | last1=Crepp | first1=Justin R. | last2=Johnson | first2=John Asher | last3=Fischer | first3=Debra A. | last4=Howard | first4=Andrew W. | last5=Marcy | first5=Geoffrey W. | last6=Wright | first6=Jason T. | last7=Isaacson | first7=Howard | last8=Boyajian | first8=Tabetha | last9=von Braun | first9=Kaspar | last10=Hillenbrand | first10=Lynne A. | last11=Hinkley | first11=Sasha | last12=Carpenter | first12=John M. | last13=Brewer | first13=John M. | title=The Dynamical Mass and Three-Dimensional Orbit of HR7672B: A Benchmark Brown Dwarf with High Eccentricity | journal=[[The Astrophysical Journal]] | volume=751 | issue=2 | id=97 | page=14 | date=2012 | arxiv=1112.1725 | bibcode=2012ApJ...751...97C | doi=10.1088/0004-637X/751/2/97| s2cid=16113054 }}</ref>