xi Cygni

{{short description|Star in the constellation Cygnus}}

{{Starbox begin

| name = ξ Cygni

}}

{{Starbox image

| image=

{{Location mark

|image=Cygnus constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=ξ Cyg

|x=231|y=322

}}

|caption=Location of ξ Cygni (circled)

}}

{{Starbox observe

|epoch = J2000

|constell = Cygnus

|ra= {{RA|21|04|55.86}}

|dec= {{DEC|+43|55|40.272}}

|appmag_v= 3.73{{cite journal|bibcode=2002yCat.2237....0D|title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system|journal=CDS/ADC Collection of Electronic Catalogues|volume=2237|pages=0|last1=Ducati|first1=J. R.|year=2002}}

}}

{{Starbox character

|class= K4:Ib- + A1.5V

| b-v = +1.66

| u-b = +1.78

}}

{{Starbox astrometry

| radial_v = −19.10{{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters | journal=Astronomy and Astrophysics | volume=430 | issue=1 | pages=165–186 |date=January 2005 | doi=10.1051/0004-6361:20041272 | bibcode=2005A&A...430..165F | arxiv=astro-ph/0409579 | s2cid=17804304 }}

| prop_mo_ra = +10.062

| prop_mo_dec = +0.861

| parallax = 2.8363

| p_error = 0.1269

| parallax_footnote = {{cite Gaia DR3|2162316545207257600}}

| dist_footnote =

| absmag_v = −4.3/+1.3{{cite journal|bibcode=2002ApJS..143..513G|title=Spectral Classification of the Hot Components of a Large Sample of Stars with Composite Spectra, and Implication for the Absolute Magnitudes of the Cool Supergiant Components|journal=The Astrophysical Journal Supplement Series|volume=143|issue=2|pages=513|last1=Ginestet|first1=N.|last2=Carquillat|first2=J. M.|year=2002|doi=10.1086/342942|doi-access=}}

}}

{{Starbox orbit

|reference={{cite journal|bibcode=1989A&A...214..261R|title=Observations of modulation and phase displacement of the stellar wind in six red giant spectroscopic binaries|journal=Astronomy and Astrophysics|volume=214|pages=261|last1=Reimers|first1=D.|last2=Schroeder|first2=K.-P.|year=1989}}

|period_unitless=6,750 ± 200 days

|eccentricity=0.25 ± 0.07

|inclination=~50

|axis_unitless=~{{solar radius|766}}

}}

{{Starbox detail

| source =

| component1 = Primary

| mass = ~8

| temperature = {{val|3,878|33|fmt=commas}}{{snd}}4,031

| gravity = 0.89

| metal_fe = −0.26

| radius = {{val|220.09|9.64|10.56}}

| luminosity = {{val|9889|964}}

| component2 = Secondary

| mass2 = ~2.5

| age_myr2 =

}}

{{Starbox catalog

| names = 62 Cygni, FK5 792, GC 29459, HIP 104060, HR 8079, HD 200905, SAO 50424

}}

{{Starbox reference

| Simbad = Xi+Cygni

}}

{{Starbox end}}

ξ Cygni (Latinised as Xi Cygni) is a spectroscopic binary star in the constellation Cygnus, made up of a K-type supergiant star (primary) and an A-type star (secondary). Its apparent magnitude is 3.73, making it readily visible to the naked eye, and it is located around {{convert|350|pc|ly}} away.