Gemma is Latin, perhaps meaning a bud. This might be connected with the idea of Corona Borealis as a floral crown. Gnosia Stella Coronae is the Latin name applied to the star by the Roman poet Virgil in his Georgics composed in the first century C. E.
Gemma, Alphekka, Alphecca, Gnosia, Ashtaroth, The Jewel, Gnosia Stella Coronae, 5 CrB, HR 5793, BD +27°2512, HD 139006, GCTP 3519.00, SAO 83893, FK5 578, HIP 76267.
Database references
SIMBAD
data ...
Gemma Frisius' globe manual "De Principuiis Astronomae et Cosmographiae" describes the use of spherical gnomon for providing equal hours.
1532
Oronce Finé (Paris) publishes his "Protomathesis", giving a comprehensive treatment of dial types.
Gemma TumeltyGemma WardGemmi Pass
GemmrigheimGemmuleGemmules
Gemmy IndustriesGemna HordeGemological Institute of America ...
Alphecca (Gemma)
Alpha Coronae Borealis
Arabic: "bright one of the dish" (Latin: gem) ...
Alphecca (Gemma) = Alpha Coronae Borealis
Nusakan = Beta Coronae Borealis
Gamma Crb = Gamma Coronae Borealis &
Delta CrB = Delta Coronae Borealis
Theta CrB = Theta Coronae Borealis
Kappa CrB = Kappa Coronae Borealis # ...
Alphecca; Alphacca; Gemma; Gnosia; The Jewel; Gnosia Stella Coronae; Ashtaroth.
Alpha Coronae Borealis
HR 5793
HD 139006 ...
Kent Cep Cepheus Cepheus Alderamin Cet Cetus Whale Menkar Cha Chamaeleon Chameleon Cir Circinus Compasses Col Columba Dove Com Coma Berenices Berenice's Hair CrA Corona Australis Southern Crown CrB Corona Borealis Northern Crown Alphecca (Gemma) Crv ...
The brightest star in the constellation is [2919] alpha Coronae Borealis, also known as Gemma ("jewel"), Alphecca or Alphekka (from "nayyir al-fakka," or "the bright star of the broken ring"), Gnosia (from "Gnosia stella coronae, ...
Map © 2003 Torsten Bronger
Also known as Gemma, the brightest star in the constellation Corona Borealis. Its Arabic name (alternatively spelled "Alphecca"), meaning "break," refers to the broken circlet of stars that makes up the Northern Crown.
Hot Earths have atmospheres of rock
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Posted: 10 September 2010 ...
The seven stars that make up the crown are not terribly bright, except for Gemma, or Alphecca (alpha Coronae Borealis), which is a 2.2 magnitude star 75 light years away.
The constellation is the fifth largest in the sky but does not catch the eye and has no bright stars rivaling Vega in adjoining Lyra or even the much fainter Gemma in Corona Borealis to the west.
A binary, the system is the title member of the Sirius stellar moving group (also know as the Sirius Super Clusteror Ursa Major star stream), which include all five stars of the Great Dipper as well as Gemma and are mostly around 490 million years ...
The Hildenbrandiales are an order of thalloid red alga which bear conceptacles and produce secondary pit connections. They reproduce by vegitative gemmae as well as tetrasporangia, which are produced by the conceptacles....
Whatever the case, after their wedding Dionysus joyfully tossed the crown into the sky where its jewels changed into stars. Its brightest star is called Gemma, the Latin for ‘jewel', ...
[Credit: © Gemma Giannini]
Welsh pony[Credit: Sally Anne Thompson/EB Inc.]
Welsh pony with rider jumping in competition[Credit: © Bob Langrish]
Welsh pony stallion with white coat.[Credit: © Scott Smudsky]
[Credit: AP] ...
 See also: Alphecca, Corona, Constellation, Star, Corona Borealis
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