What is S Persei?
{{Starbox begin | name = S Persei {{Starbox image | image= {{Location mark |image=Double Cluster.jpg|alt=|float=center|width=300 |label=|position=right |mark=GoldF39400 circle.svg|mark_width=10|mark_link=S Per|x=16|y=422 }} |caption=Location of S Persei (circled) near the [[Double Cluster]] (north is left) }} }} {{Starbox observe | epoch=J2000 | ra={{RA|2|22|51.70928}} | dec={{DEC|58|31|11.4476}} | appmag_v=9.23 (7.9 - 12.0) | constell=[[Perseus (constellation)|Perseus]] }} {{Starbox character | class=M4.5I (M3Iae - M7) | b-v=2.65 | u-b= | variable=[[Semiregular variable|SRc]] }} {{Starbox astrometry | radial_v=-39.71 | prop_mo_ra=&minus;0.49 ± 0.23 | prop_mo_dec={{nowrap|&minus;1.19 ± 0.20}} | parallax=0.413 | p_error=0.017 | parallax_footnote= | absmag_v=&minus;6.36 (at m<sub>V</sub> 9.23) }} {{Starbox detail | mass=20 | radius=1,212 ± 124, {{nowrap|780 - 1,230}} | luminosity=86,000 - 186,000 | temperature=3,000–3,600 | metal= | rotation= | gravity=0.0 | age= }} {{Starbox catalog | names= [[Variable star designation|S]] Per, [[Henry Draper Catalogue|HD]] 14528, [[Hipparcos Catalogue|HIP]] 11093, [[Bonner Durchmusterung|BD]]+57°552, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 23261, [[Washington Double Star Catalog|WDS]] J02229+5835, [[AAVSO]] 0215+58 }} {{ Starbox reference | Simbad = S+Persei }} {{Starbox end}} '''S Persei''' is a [[red supergiant]] located near the [[Double Cluster]] in [[Perseus constellation|Perseus]], north of the cluster [[NGC 869]]. ==References== {{reflist}} [[Category:Red giants]] {{sci-stub}}