Alphecca is an eclipsing binary. The brighter star of the pair is a white A0V main sequence star. This spectral type corresponds to an effective temperature of 9900 K. The star diameter must be about 2.5 times the sun's diameter.
Alphecca; Alphacca; Gemma; Gnosia; The Jewel; Gnosia Stella Coronae; Ashtaroth.
Alpha Coronae Borealis
HR 5793
HD 139006 ...
Alphecca, Gnosia, Ashtaroth, 5 CrB, HR 5793, BD +272512, HD 139006, GCTP 3519.00, SAO 83893, FK5 578, HIP 76267
Related category
- NOTABLE STARS ...
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 # ...
The name Alphecca is Arabic, short for ا"نائر ا"فك'ة an-na'ir al-fakkah "the bright (star) of the broken (ring of stars)". Gemma is Latin for "jewel". Gnosia is also Latin, short for Gnōsia stella corōnæ "star of the crown of Knossos".
Some of the brighter stream members include Alpha Coronae Borealis (α CrB or Alphecca or Gemma), Beta Aurigae (β Aur), Delta Aquarii (δ Aqr), Gamma Leporis (γ Lep) and Beta Serpentis (β Ser).
Rigil 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 ...
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, ...
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.
Astronomers have discovered large discs of material, which may themselves be protoplanetary discs, around the stars Vega, Alphecca and Fomalhaut, all of which are very close to the Sun.
It lies near the center (16:1:2.7+33:18:12.6, ICRS 2000.0) of Constellation Corona Borealis, the Northern Crown -- north of Iota Coronae Borealis and northeast of Theta Coronae Borealis and Alphecca (Alpha Coronae Borealis).
 See also: Corona, Star, Gemma, Constellation, Corona Borealis
|
