DIADEM (Alpha Comae Berenices). Not quite the brightest star in Coma Berenices (Berenices Hair), the Alpha star just loses out to Beta. The prominent portion of Coma Berenices is the beautiful Coma Berenices cluster.
Diadem (Alpha Com)
Messier Objects
M53 (globular cluster)
M64 The Blackeye Galaxy (spiral galaxy)
M85 (elliptical galaxy)
M88 (spiral galaxy)
M91 (spiral galaxy)
M98 (spiral galaxy)
M99 (spiral galaxy)
M100 (spiral galaxy) ...
File:Diadem of Plock.PNGKonrad I of Masovia , son of Casimir II of Poland and Helen of Znojmo of Moravia, was the 6th Dukes of Masovia.After his father's death in 1194, Konrad was brought up by his mother....
made a joint invasion ...
Echinothrix diademaEchinus GeyserEchinussa
Echiodon rendahliEchionEchion (Argonaut)
Echion (mythology)Echion (Painter)Echis ...
The leading star of this constellation, alpha Com, also known as Diadem, is a binary which cannot be splitted into its components by amateur telescopes.
On the other hand the double 24 Com is an attraktive object for small telescopes.
Alpha Comae, sometimes called Diadem, has the same diameter as our Sun, and is 62 light years away with a luminosity of nearly three. It's a rapid motion binary (see below) and in the same field is the globular cluster M53 (see below).
The crescent moon, the diadem of night. Cowper.
2.
A secondary planet, or satellite, revolving about any member of the solar system; as, the moons of Jupiter or Saturn.
It is also known as Diadem, referring to Berenice's crown. It is a binary star system with two almost equal components orbiting each other. The system is approximately 65 light-years away from Earth.
Named star in Coma Berenices: Diadem (α Com),
Adjoining constellations: Boötes, Canes Venatici, Leo, Ursa Major, Virgo.
Deneb Kaitos Schemali Iota Ceti
Denebola Beta Leonis
Dheneb Eta Ceti
Diadem Alpha Comae Berenices
Diphda Beta Ceti
Dnoces Iota Ursae Majoris
Dschubba Delta Scorpii
Dubhe Alpha Ursae Majoris
Duhr Delta Leonis ...
 See also: Second, Star, Sun, Year, Period
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