Editing Procyon (section)

==View from this system==
Were the [[Sun]] to be observed from this [[star system]], it would appear to be a [[apparent magnitude|magnitude]] 2.55 star in the constellation [[Aquila (constellation)|Aquila]] with the exact opposite coordinates at [[right ascension]] {{RA|19|39|18.11950}}, [[declination]] {{DEC|-05|13|29.9552}}. It would be as bright as [[β Scorpii]] is in our sky.

Procyon's closest neighboring star is [[Luyten's Star]], about {{Convert|1.12|ly|pc|abbr=off}} away.<ref name=Annot/> Procyon would be the brightest star in the night sky of an exoplanet orbiting Luyten's Star, with an apparent magnitude of -4.68.{{efn|1=The absolute magnitude ''M<sub>v</sub>'' of Procyon is 2.66, so the apparent magnitude ''m'' is given by 2.66 − 5 + (5*log<sub>10</sub>(0.34)) = -4.68.<ref>{{cite book |first=Roger John |last=Tayler |date=1994 |title=The Stars: Their Structure and Evolution |url=https://archive.org/details/starstheirstruct00tayl_311 |url-access=limited |publisher=Cambridge University Press |page=[https://archive.org/details/starstheirstruct00tayl_311/page/n24 16] |isbn=978-0-521-45885-6}}</ref>}} Luyten's Star would also be visible from Procyon, at an apparent magnitude of 4.61, unlike any red dwarfs from Earth.