{{Short description|Open cluster in the constellation Centaurus}} {{Infobox cluster | name = NGC 5662 | image = File:NGC 5662 DSS.jpg | caption = NGC 5662 imaged by [[Digitized Sky Survey|DSS]] | credit = | epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]] | constellation = [[Centaurus (constellation)|Centaurus]] | ra = {{RA|14|35|37}}<ref name="simbad"> {{cite simbad | title=NGC 5662 | access-date=2015-06-19 }}</ref> | dec = {{DEC|-56|37|06}}<ref name="simbad"/> | dist_ly = 2,170 [[light year|ly]] | dist_pc = 666 [[parsec|pc]]<ref name=webda>[https://webda.physics.muni.cz/cgi-bin/ocl_page.cgi?dirname=ngc5662 WEBDA: NGC 5662]</ref> | appmag_v = 5.5 <ref name="simbad"/> | size_v =12' | mass_msol = 348<ref name=Piskunov2008>{{cite journal|last1=Piskunov|first1=A. E.|last2=Schilbach|first2=E.|last3=Kharchenko|first3=N. V.|last4=Röser|first4=S.|last5=Scholz|first5=R.-D.|title=Tidal radii and masses of open clusters|journal=Astronomy & Astrophysics|date=6 November 2007|volume=477|issue=1|pages=165–172|doi=10.1051/0004-6361:20078525|url=ftp://cdsarc.u-strasbg.fr/pub/cats/J/A%2BA/477/165/table.dat|bibcode = 2008A&A...477..165P |archive-url=https://web.archive.org/web/20200310213712/ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+A/477/165/table.dat|archive-date=2020-03-10|url-status=dead|doi-access=free}}</ref> | age = 93 million years<ref name=webda/> | notes = | names = Melotte 127, Colinder 284, vdBH 162 }} '''NGC 5662''' is an [[open cluster]] in the constellation [[Centaurus (constellation)|Centaurus]]. It was discovered by [[Nicolas Louis de Lacaille]] on May 17, 1752 from [[South Africa]].<ref name=Jones_1969>{{cite journal | title=The search for the nebulae - VI | last=Jones | first=K. G. | journal=Journal of the British Astronomical Association | volume=79 | pages=213–222 | date=March 1969 | bibcode=1969JBAA...79..213J }}</ref> [[James Dunlop]] observed it on July 10, 1826 from [[Parramatta]], [[Australia]] and added it to his catalog as No. 342.<ref name=seds/>
It is a rich cluster ([[Trumpler class]] II3r), with 295 stars according to Haug (1978) and 280 according with Archinal, Hynes (2003).<ref name=seds>{{cite web|last1=Kronberg|first1=Christine|last2=Frommert|first2=Hartmut|title=NGC 5662|url=http://messier.seds.org/xtra/ngc/n5662.html|website=messier.seds.org}}</ref> One of its members, [[V Centauri]], is a [[cepheid variable]]. Despite its large distance from the cluster centre, it has high likelihood of being a member of it.<ref>{{cite journal|last1=Anderson|first1=Richard I.|last2=Eyer|first2=Laurent|last3=Mowlavi|first3=Nami|title=Cepheids in open clusters: an 8D all-sky census|journal=Monthly Notices of the Royal Astronomical Society|date=July 2013|volume=434|issue=3|pages=2238–2261|doi=10.1093/mnras/stt1160|doi-access=free |arxiv = 1212.5119 |bibcode = 2013MNRAS.434.2238A }}</ref> The tidal radius of the cluster is 6.4 - 12.4 parsecs (21 - 40 light years) and represents the average outer limit of NGC 5662, beyond which a star is unlikely to remain gravitationally bound to the cluster core.<ref name=Piskunov2008/>
== References == {{reflist}}
== External links == {{commonscat}} {{wikiSky}}
{{Stars of Centaurus}} {{Ngc60}}
{{DEFAULTSORT:NGC 5662}} [[Category:NGC objects|5662]] [[Category:Centaurus]] [[Category:Open clusters]]