Editing Ursa Major (section)

===Other stars===
[[W Ursae Majoris]] is the prototype of a class of [[contact binary]] [[variable star]]s, and ranges between 7.75<sup>[[apparent magnitude|m]]</sup> and 8.48<sup>m</sup>.

[[47 Ursae Majoris]] is a Sun-like star with a three-planet [[extrasolar planet|system]].{{sfn|Levy|2005|p=67}} [[47 Ursae Majoris b]], discovered in 1996, orbits every 1078 days and is 2.53 times the [[mass of Jupiter]].<ref>{{cite encyclopedia |url = https://exoplanet.eu/catalog/47_uma_b--71/ |title = Planet 47 Uma b |date = 11 July 2012 |access-date = 15 July 2012 |archive-date = 11 November 2023 |archive-url = https://web.archive.org/web/20231111213322/https://exoplanet.eu/catalog/47_uma_b--71/ |encyclopedia = [[Extrasolar Planets Encyclopaedia]] |url-status = live }}</ref> [[47 Ursae Majoris c]], discovered in 2001, orbits every 2391 days and is 0.54 times the mass of Jupiter.<ref>{{cite encyclopedia |url = https://exoplanet.eu/catalog/47_uma_c--72/ |title = Planet 47 Uma c |date = 11 July 2012 |access-date = 15 July 2012 |url-status = live |archive-url = https://web.archive.org/web/20231111213317/https://exoplanet.eu/catalog/47_uma_c--72/ |encyclopedia = [[Extrasolar Planets Encyclopaedia]] |archive-date = 11 November 2023 }}</ref> [[47 Ursae Majoris d]], discovered in 2010, has an uncertain period, lying between 8907 and 19097 days; it is 1.64 times the mass of Jupiter.<ref>{{cite encyclopedia |url = https://exoplanet.eu/catalog/47_uma_d--648/ |title = Planet 47 Uma d |date = 11 July 2012 |access-date = 15 July 2012 |url-status = live |archive-url = https://web.archive.org/web/20231111213318/https://exoplanet.eu/catalog/47_uma_d--648/ |encyclopedia = [[Extrasolar Planets Encyclopaedia]] |archive-date = 11 November 2023 }}</ref> The star is of magnitude 5.0 and is approximately 46 light-years from Earth.{{sfn|Levy|2005|p=67}}

The star TYC 3429-697-1 ({{RA|9|40|44}} {{DEC|48|14|2}}), located to the east of [[θ Ursae Majoris]] and to the southwest of the "Big Dipper") has been recognized as the [[List of Delaware state symbols|state star]] of [[Delaware]], and is informally known as the Delaware Diamond.<ref name=a>{{cite web |url=http://delaware.gov/topics/facts/misc.shtml |title=Delaware Facts & Symbols – Delaware Miscellaneous Symbols |website=delaware.gov |access-date=2019-06-07 |archive-date=2019-03-28 |archive-url=https://web.archive.org/web/20190328213054/https://delaware.gov/topics/facts/misc.shtml |url-status=live }}</ref>