Nu Cygni

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

{{Starbox begin

| name = ν 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=ν Cyg

|x=250|y=388

}}

|caption=Location of ν Cygni (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Cygnus

| ra = {{RA|20|57|10.41907}}{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%20103413 Vizier catalog entry]

| dec = {{DEC|+41|10|01.6991}}

| appmag_v = 3.94{{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. |date=2002}}

}}

{{Starbox character

| class = A0III n{{cite journal | bibcode=1995ApJS...99..135A | title=The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars | journal=Astrophysical Journal Supplement | volume=99 | pages=135 | last1=Abt | first1=Helmut A | last2=Morrell | first2=Nidia I | year=1995 | doi=10.1086/192182 | doi-access=free }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ59dbd25a6497&-out.add=.&-source=J/ApJS/99/135/table2&recno=1837 Vizier catalog entry]

| b-v = +0.02

| u-b = +0.00

}}

{{Starbox astrometry

| radial_v = −27.60{{Cite journal | doi = 10.1134/S1063773706110065 | bibcode=2006AstL...32..759G | 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 | last1 = Gontcharov | first1 = G. A.|arxiv = 1606.08053 | s2cid=119231169 }}

| prop_mo_ra = +9.64

| prop_mo_dec = −22.75

| parallax = 8.71

| p_error = 0.34

| parallax_footnote =

| absmag_v = −1.36{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

}}

{{Starbox detail

| component1 = ν Cyg A

| radius = {{solar radius calculator|type=LT|412|9462|decimals=2}}{{efn|Radius calculated using temperature and luminosity}}

| mass = {{Val|3.62|0.08}}{{citation

| last1=Zorec | first1=J. | last2=Royer | first2=F.

| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities

| journal=Astronomy & Astrophysics

| volume=537 | page=A120 | date=January 2012

| doi=10.1051/0004-6361/201117691 | bibcode=2012A&A...537A.120Z

| arxiv=1201.2052 | s2cid=55586789 | postscript=. }}

| luminosity = 412

| temperature = 9,462

| rotational_velocity = 217

}}

{{Starbox catalog

| names = {{odlist | B=ν Cyg | F=58 Cyg | BD=+40°4364 | FK5=| HD=199629 | HIP=103413 | HR=8028 | SAO=50274 | GC=29251 | WDS=J20572+4110AB }}{{cite simbad|title=* nu. Cyg|access-date=11 March 2017}}

}}

{{Starbox reference

| Simbad = 58+Cygni

}}

{{Starbox end}}

Nu Cygni, Latinized from ν Cygni, is a binary star system in the constellation Cygnus. Its apparent magnitude is 3.94 and it is approximately 374 light years away based on parallax. The brighter component is a magnitude 4.07 A-type giant star with a stellar classification of A0III n, where the 'n' indicates broad "nebulous" absorption lines due to rapid rotation. This white-hued star has an estimated 3.6 times the mass of the Sun and about {{solar radius calculator|type=LT|412|9462|decimals=2}} times the Sun's radius. It is radiating 412 times the Sun's luminosity from its photosphere at an effective temperature of 9,462 K. The magnitude 6.4 companion has an angular separation of 0.24" from the primary.{{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | bibcode=2008MNRAS.389..869E | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | arxiv = 0806.2878 | s2cid=14878976 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/MNRAS/389/869/table1&mHR=8028 Vizier catalog entry]