HD 197037#Planetary system

{{short description|Binary star system in the constellation of Cygnus}}

{{Starbox begin

|name=HD 197037

}}

{{Starbox observe 2s

| epoch = J2000

| constell = Cygnus

| component1 = A

| ra1 = {{RA|20|39|32.95994}}

| dec1 = {{DEC|+42|14|54.7783}}

| appmag_v1 = 6.813{{citation |arxiv=1809.07342 |doi=10.3847/1538-4365/aae1a3 |title=Far-ultraviolet Activity Levels of F, G, K, and M Dwarf Exoplanet Host Stars |year=2018 |last1=France |first1=Kevin |last2=Arulanantham |first2=Nicole |last3=Fossati |first3=Luca |last4=Lanza |first4=Antonino F. |last5=Loyd |first5=R. O. Parke |last6=Redfield |first6=Seth |last7=Schneider |first7=P. Christian |journal=The Astrophysical Journal Supplement Series |volume=239 |issue=1 |page=16 |bibcode=2018ApJS..239...16F |s2cid=119368148 |doi-access=free }}

| component2 = B

| ra2 = {{RA|20|39|32.93627}}

| dec2 = {{DEC|+42|14|51.1696}}

| appmag_v2 =

}}

{{Starbox character

|component1=HD 197037 A

|component2=HD 197037 B

| type = main sequence

| class = F7V

| class2=M{{citation |arxiv=1605.02731 |doi=10.1088/1538-3873/128/968/102001 |title=Imaging Extrasolar Giant Planets |year=2016 |last1=Bowler |first1=Brendan P. |journal=Publications of the Astronomical Society of the Pacific |volume=128 |issue=968 |page=102001 |bibcode=2016PASP..128j2001B |s2cid=118614968 }}

}}

{{Starbox astrometry

| component1 = A

| radial_v = 9.087{{±|0.199}}

| prop_mo_ra = −62.745

| prop_mo_dec = −222.168

| parallax = 30.2286

| p_error = 0.0143

| parallax_footnote = {{cite Gaia DR3|2066437688140905600}}

| absmag_v = 4.26{{citation |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 }}

| component2 = B

| radial_v2 =

| prop_mo_ra2 = −54.165

| prop_mo_dec2 = −227.397

| parallax2 = 30.3173

| p_error2 = 0.0339

| parallax_footnote2 = {{cite Gaia DR3|2066437688141580928}}

| absmag_v2=

}}

{{Starbox relpos

| reference =

| epoch = 2013

| primary = HD 197037 A

| component = HD 197037 B

| angdistsec = 3.676{{±|0.011}}

| angdistmas =

| angdistref =

| posang = 182.21{{±|0.18}}

| posangref =

| projsep = 121

| projsepref =

}}

{{Starbox detail

|component1=HD 197037 A

|component2=HD 197037 B

| source ={{citation |arxiv=1709.05315 |doi=10.3847/1538-3881/aa8d69 |title=Exclusion of Stellar Companions to Exoplanet Host Stars |year=2017 |last1=Wittrock |first1=Justin M. |last2=Kane |first2=Stephen R. |last3=Horch |first3=Elliott P. |last4=Howell |first4=Steve B. |last5=Ciardi |first5=David R. |last6=Everett |first6=Mark E. |journal=The Astronomical Journal |volume=154 |issue=5 |page=184 |bibcode=2017AJ....154..184W |s2cid=55789971 |doi-access=free }}

| mass = 1.063{{±|0.022}}

| mass2 = 0.3412{{±|0.0098|0.0477}}

| radius = 1.105{{±|0.023}}

| radius2 = 0.16{{citation |bibcode=2021A&A...649A.111A |title=Stellar clustering and orbital architecture of planetary systems |last1=Adibekyan |first1=V. |last2=Santos |first2=N. C. |last3=Demangeon |first3=O. D. S. |last4=Faria |first4=J. P. |last5=Barros |first5=S. C. C. |last6=Oshagh |first6=M. |last7=Figueira |first7=P. |last8=Delgado Mena |first8=E. |last9=Sousa |first9=S. G. |last10=Israelian |first10=G. |last11=Campante |first11=T. |last12=Hakobyan |first12=A. A. |journal=Astronomy and Astrophysics |date=2021 |volume=649 |pages=A111 |doi=10.1051/0004-6361/202040201 |arxiv=2102.12346 }}

| temperature = 6137{{±|20}}{{citation |arxiv=1609.04389 |doi=10.3847/1538-3881/aa5df3 |title=Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes |year=2017 |last1=Stassun |first1=Keivan G. |last2=Collins |first2=Karen A. |last3=Gaudi |first3=B. Scott |journal=The Astronomical Journal |volume=153 |issue=3 |page=136 |bibcode=2017AJ....153..136S |s2cid=119219062 |doi-access=free }}

| temperature2 = 4,766

| luminosity = 1.568{{±|0.074}}

| luminosity2 = 0.01{{citation |bibcode=2023AJ....165..267H |title=Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O₂ Levels in Nearby Transiting Habitable-zone Exoplanets |last1=Hardegree-Ullman |first1=Kevin K. |last2=Apai |first2=Dániel |last3=Bergsten |first3=Galen J. |last4=Pascucci |first4=Ilaria |last5=López-Morales |first5=Mercedes |journal=The Astronomical Journal |date=2023 |volume=165 |issue=6 |page=267 |doi=10.3847/1538-3881/acd1ec |doi-access=free |arxiv=2304.12490 }}

| gravity = 4.37{{±|0.04}}

| metal_fe = −0.16{{±|0.03}}

| rotation = 19.1 d

| rotational_velocity =

| age_gyr = 3.408{{±|0.924}}

}}

{{Starbox catalog

| names = {{odlist|BD=+41 3845|2MASS = J20393296+4214549|HIP=101948|TYC=3161-126-1|LTT=16037|NLTT=49662|UBV=17937}}{{cite simbad|title=HD 197037|access-date=2021-01-19}}

}}

{{Starbox reference

| Simbad = HD+197037

}}

{{Starbox end}}

HD 197037 is a binary star system. Its primary or visible star, HD 197037 A, is a F-type main-sequence star. Its surface temperature is 6150{{±|34}} K. HD 197037 A is depleted in heavy elements compared to the Sun, with a metallicity Fe/H index of −0.16{{±|0.03}}, but is younger at an age of 3.408{{±|0.924}} billion years.

A multiplicity survey detected a red dwarf stellar companion HD 197037 B in 2016, at a projected separation of 121 AU.{{citation |arxiv=1601.01524 |doi=10.1093/mnras/stw049 |title=A lucky imaging multiplicity study of exoplanet host stars – II |year=2016 |last1=Ginski |first1=C. |last2=Mugrauer |first2=M. |last3=Seeliger |first3=M. |last4=Buder |first4=S. |last5=Errmann |first5=R. |last6=Avenhaus |first6=H. |last7=Mouillet |first7=D. |last8=Maire |first8=A.-L. |last9=Raetz |first9=S. |journal=Monthly Notices of the Royal Astronomical Society |volume=457 |issue=2 |pages=2173–2191 |doi-access=free |bibcode=2016MNRAS.457.2173G |s2cid=53626523 }} The existence of other stellar companions at projected separations from 1.62 to 45.26 AU was excluded.