View source for NGC 189

{{short description|Open cluster in the constellation Cassiopeia}}
{{Use dmy dates|date=March 2022}}
{{Infobox cluster
| name = [[New General Catalogue|NGC]] 189
| image = [[File:NGC 0189 DSS.jpg|250px]]
| caption = NGC 189 from [[Digitized Sky Survey|DSS]]
| credit = 
| epoch = J2000
| ra = {{Deg2HMS|009.870|sup=yes}}<ref name=Kharchenko>{{cite journal|display-authors=1|last1=Kharchenko|first1=N. V.|last2=Piskunov|first2=A. E.|last3=Schilbach|first3=E.|last4=Röser|first4=S.|last5=Scholz|first5=R.-D.|title=Global survey of star clusters in the Milky Way. II. The catalogue of basic parameters|journal=Astronomy & Astrophysics|volume=558|pages=A53|date=2013|bibcode=2013A&A...558A..53K|doi=10.1051/0004-6361/201322302|arxiv=1308.5822|s2cid=118548517}}</ref>
| dec = +{{Deg2DMS|+61.115|sup=yes}}<ref name=Kharchenko/>
| dist_ly ={{cvt|1300|pc|ly|lk=on|order=flip}}<ref name=Kharchenko/>
| dist_pc =
| appmag_v = 8.8<ref name=SIMBAD>{{cite simbad|title=NGC 189|accessdate=2021-02-12}}</ref>
| size_v = 0.120°<ref name=Kharchenko/>
| radius_ly = 
| absmag_v = 
| age = 510 Myr<!-- log(Age) in yr = 8.709 ± 0.047 --><ref name=Kharchenko/>
| constellation = [[Cassiopeia (constellation)|Cassiopeia]]
| notes =
| names = [[Collinder catalogue|Cr]] 462, C 0036+608, OCL 301
}}

''' NGC 189''' is an [[open cluster]] in the [[Cassiopeia (constellation)|Cassiopeia constellation]]. It was discovered by [[Caroline Herschel]] on 27 September 1783, and independently rediscovered by [[John Herschel]] on 27 October 1829.<ref name=cseligman>{{cite web|url=http://cseligman.com/text/atlas/ngc1a.htm#189|title=New General Catalogue objects: NGC 150 – 199|author=Seligman, Courtney|website=cseligman.com|accessdate=2021-02-12}}</ref>

NGC 189 orbits the [[Milky Way]] on a nearly circular orbit with an [[orbital eccentricity|eccentricity]] of 0.053 and an [[orbital period]] of 231,000 years. It enters the [[solar circle]] at parts of its orbit, and is part of the [[thin disk]] of the Milky Way.<ref>{{cite journal | doi=10.1016/j.asr.2023.04.015 | title=CCD UBV and Gaia DR3 based analysis of NGC 189, NGC 1758 and NGC 7762 open clusters | date=2023 | last1=Yontan | first1=Talar | last2=Bilir | first2=Selçuk | last3=Çakmak | first3=Hikmet | last4=Raúl | first4=Michel | last5=Banks | first5=Timothy | last6=Soydugan | first6=Esin | last7=Canbay | first7=Remziye | last8=Taşdemir | first8=Seval | journal=Advances in Space Research | volume=72 | issue=4 | pages=1454–1473 | arxiv=2304.04294 | bibcode=2023AdSpR..72.1454Y }}</ref>

==References==
{{Reflist}}

==External links==
* [http://messier.seds.org/xtra/ngc/n0189.html NGC 189 @ SEDS NGC objects pages]
* [http://www.nightskyinfo.com/archive/ngc189/ NGC 189]{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }} at NightSkyInfo.com
* {{WikiSky}}

{{Catalogs|NGC=189|Collinder =462}}
{{Ngc5}}
{{Cassiopeia (constellation)}}
{{Sky|00|39|36|+|61|04|00|3500}}

{{DEFAULTSORT:NGC 0189}}
[[Category:Open clusters]]
[[Category:Cassiopeia (constellation)]]
[[Category:NGC objects|0189]]
[[Category:Astronomical objects discovered in 1783]]


{{Star-cluster-stub}}