WZ Cephei

{{Short description|Binary star in the constellation Cepheus}}

{{Refimprove|date=February 2018}}

{{Starbox begin

| name = WZ Cephei

}}

{{Starbox image

| image = 250px

| caption = Celestia 1.6.1's impression of WZ Cephei, eclipsing binary of W UMa-type.

}}

{{Starbox observe

| epoch = J2000

| constell = Cepheus

| ra = {{RA|23|22|24.215}}

| dec = {{DEC|+72|54|56.70}}

| appmag_v = +11.22

}}

{{Starbox character

| class = F5V+F5V

| variable=W Ursae Majoris-type

}}

{{Starbox astrometry

| dist_ly = 880.2

| dist_pc = 270{{cite journal | doi=10.1086/498018 | arxiv=astro-ph/0509820| author=Geske | last2=Gettel | first2=S. J. | last3=McKay | first3=T. A.| title=A ROSAT Survey of Contact Binary Stars| journal=The Astronomical Journal| volume=131|issue=1|pages=633–637 |date=2006|bibcode=2006AJ....131..633G| s2cid=7756046}}

}}

{{Starbox detail

| mass = 1.1/0.83

| radius = 1.4/0.82

| luminosity = 3/1

| temperature = 6400

}}

{{Starbox orbit

| period = 0.00114

| axis_unitless = 0.013 AU

| eccentricity = 0.0

| inclination = 86.2{{cite journal| doi=10.1051/aas:1998248| author=Djurasevic| last2=Zakirov| first2=M.| last3=Hojaev| first3=A.| last4=Arzumanyants| first4=G.| title=Analysis of the activity of the eclipsing binary WZ Cephei| journal=Astronomy and Astrophysics Supplement| volume=131| issue=1|pages=17–23 |date=1998|bibcode=1998A&AS..131...17D| doi-access=free}}

}}

{{Starbox catalog

| names = WZ Cep, 2MASS J23222421+7254566, 1RXS J232216.6+725505

}}

{{Starbox reference

| Simbad = WZ+Cep

}}

{{Starbox end}}

WZ Cephei is an eclipsing binary star of W Ursae Majoris-type in the constellation of Cepheus, located 880 light years away from the Sun. The stars orbit around a common orbital barycenter every 0.41744 days (slightly over 10 hours). Timing analyses have revealed the possible presence of a third low-mass stellar companion in a wide orbit.{{cite journal| author=Zhu| author2=Qian| name-list-style=amp| title=WZ Cephei: A Close Binary at the Beginning of Contact Phase| journal=The Astronomical Journal| volume=138|issue=6|pages=2002–2006 |date=2009|bibcode=2009AJ....138.2002Z|doi = 10.1088/0004-6256/138/6/2002 | doi-access=free}}

File:WZCepLightCurve.png for WZ Cephei, plotted from TESS data]]

Heribert Schneller announced the discovery that the star is a variable star, in 1928.