Changes

| parallax        =0.32 ± 0.16 mas<ref name=simbad/><ref name=hip/>

| parallax        =0.32 ± 0.16 mas<ref name=simbad/><ref name=hip/>

}}

}}

'''P Cygni''' (34 Cygni, Nova Cygni 1600, P Cyg, HD 193237, HIP 100044) is a [[hypergiant]] [[variable star]] in the [[constellation]] of [[Cygnus]], the [[swan]].<ref name=illinois>{{cite web|url=http://stars.astro.illinois.edu/sow/pcyg.html|title=P Cyg|accessdate=December 29, 2021|publisher=stars.astro.illinois.edu|author=Jim Kaler|date=September 13, 2003}}</ref> The star is known for being the third [[variable star]] discovered as well as one of the brightest.<ref>{{cite web|url=https://www.daviddarling.info/encyclopedia/P/P_Cygni_profile.html|title=P Cygni profile|accessdate=December 29, 2021|publisher=daviddarling.info|author=David Darling}}</ref> It is the prototype for a class of stars known as "P Cygni" stars, which have distinctive [[emmisions lines]] and [[blueshift|blue shifted]] [[Absorption Spectrum|absorption lines]].<ref>{{cite web|url=https://astrobites.org/2011/01/26/variability-of-massive-stars/|title=The Variability of Massive Stars|accessdate=December 29, 2021|publisher=astrobites.org|author=Ian Czekala|date=January 26, 2011}}</ref>

'''P Cygni''' (34 Cygni, Nova Cygni 1600, P Cyg, HD 193237, HIP 100044) is a [[hypergiant]] [[variable star]] in the [[constellation]] of [[Cygnus]], the [[swan]].<ref name=illinois>{{cite web|url=http://stars.astro.illinois.edu/sow/pcyg.html|title=P Cyg|accessdate=December 29, 2021|publisher=stars.astro.illinois.edu|author=Jim Kaler|date=September 13, 2003}}</ref> The star is known for being the third [[variable star]] discovered as well as one of the brightest.<ref>{{cite web|url=https://www.daviddarling.info/encyclopedia/P/P_Cygni_profile.html|title=P Cygni profile|accessdate=December 29, 2021|publisher=daviddarling.info|author=David Darling}}</ref> It is the prototype for a class of stars known as "P Cygni" stars, which have distinctive [[emission lines]] and [[blueshift|blue shifted]] [[Absorption Spectrum|absorption lines]].<ref>{{cite web|url=https://astrobites.org/2011/01/26/variability-of-massive-stars/|title=The Variability of Massive Stars|accessdate=December 29, 2021|publisher=astrobites.org|author=Ian Czekala|date=January 26, 2011}}</ref>

Willem Janszoon Blaeu (a [[Dutch]] astronomer) was the first person to notice the existence of a new star on August 18, 1600.<ref name=aavso>{{cite web|url=https://www.aavso.org/vsots_pcyg|title=P Cygni

Willem Janszoon Blaeu (a [[Dutch]] astronomer) was the first person to notice the existence of a new star on August 18, 1600.<ref name=aavso>{{cite web|url=https://www.aavso.org/vsots_pcyg|title=P Cygni