Editing Coma Berenices (section)

==== Coma Star Cluster ====
The [[Coma Star Cluster]] represents Berenice's sacrificed tresses and as a naked eye object has been known since antiquity, appearing in Ptolemy's ''[[Almagest]]''.<ref>{{cite web | url =https://britastro.org/node/6424|title=A binocular star cluster for spring skies|publisher=[[British Astronomical Association]]| author=Stewart Moore| access-date =8 September 2017}}</ref> It doesn't have a Messier or NGC designation, but is in the [[Melotte catalogue]] of open clusters (designated Melotte 111) and is also catalogued as Collinder 256. It is a large, diffuse [[open cluster]] of about 50 stars ranging between magnitudes five and ten, including several of Coma Berenices' stars which are visible to the naked eye. The cluster is spread over a huge region (more than five degrees across) near [[Gamma Comae Berenices]]. It has such a large apparent size because it is relatively close, only 280 light-years or 86 parsecs away.<ref name=vanleeuwen09>{{cite journal |title=Parallaxes and proper motions for 20 open clusters as based on the new Hipparcos catalogue |journal=Astronomy and Astrophysics |first=F. |last=van Leeuwen |volume=497 |issue=1 |pages=209–242 |date=April 2009 |bibcode=2009A&A...497..209V |doi=10.1051/0004-6361/200811382|arxiv = 0902.1039 |s2cid=16420237 }}</ref><ref name=majaess11>{{cite journal |title=Deep Infrared ZAMS Fits to Benchmark Open Clusters Hosting Delta Scuti Stars |journal=Journal of the American Association of Variable Star Observers |first1=D. |last1=Majaess |first2=D. |last2=Turner |first3=D. |last3=Lane |first4=T. |last4=Krajci |volume=39 |issue=2 |page=219 |date=September 2011 |bibcode=2011JAVSO..39..219M |arxiv=1102.1705}}</ref>