Corona Borealis

 

Corona Borealis bụ obere mgbọ na Northern Celestial Hemisphere .  Ọ bụ otu n'ime 48 ìgwè nke Ptolemy nke mbụ afụ nke depụtara, ma bụrụkwa otu n'ime m ike 88 ọgbara ọhụrụ .  Kpakpando ya akpa na-akpa ndị na-etolite arc nke ọkara mkpuchi.  Aha Latin ya, nke sitere na ndị agha, "okpueze ugwu".  Na ቀለማት ifo oge gboo Corona Borealis na-amị anya okpueze nke chi Dionysus nyere adaeze Cretan Ariadne ma debe ya n'arụ.  Omenala ndị ọzọ ji ozi ahụ́ ndị okenye nke, aeka ugo, ebe anụ anụ bea ma ọ bụ add.  Ptolemy depụtakwara onye otu ndịda, Corona Australis, nwere ikike yiri ya.

Kpakpando kacha- na ụdị ndị ahụ bụ ukwuu 2.2 Alfa Coronae Borealis .  Nnukwu odo odo R Coronae Borealis bụ ihe atụ nke otu akwụkwọ na-ahụ ahụkebe — R Coronae Borealis variables — nke nwere ụkọ hydrogen dị oke egwu, nke a na-eche na ọ sitere na njikọ nke dwarfs ọcha abụọ.  T Coronae Borealis, nke a na-ejikarị dị ka ọkụ, bụ ụdị ụdị ọzọ na-ahụ ahụkebe nke a maara dị ka nova na-emekarị .  Nọmalị ụgha ukwuu 10, o mechara nwuo ruo oke 2 n'afọ 1946. ADS 9731 na Sigma Coronae Borealis bụ ọtụtụ ndị nwere nwere ikike isii na ise n'otu n'otu.  Achọpụtala sistemu nke ise nwere exoplanets nke Jupita hà .  Abell 2065 bụ ike Mgbodo gbadoro anya nke ukwuu otu ọkụ-afọ sitere na Sistemu ikike nwere ihe nna ndị otu 400, yana n'onwe ya bụ nke nnukwu Corona Borealis Supercluster .

. Na-ekpuchi 179 square degrees na ya mere 0.433% nke mbara igwe, Corona Borealis 73 nke 88 ọgba aghara ọgbara ọhụrụ site na mpaghara.  [1] Ọnọdụ ya na Northern Celestial Hemisphere egwuregwu na ndị na-ekiri ihe niile na-ahụ anya n'ebe ugwu nke 50 ° S. [1] [lower-alpha 1] Ókè ya n'ụdị Boötes n'ebe ugwu na  kụkọ azụ, Serpens Caput n'ebe ndịda, na Hercules n'ebe ụmụaka.  Mbiri nke ụzọ atọ maka mmị, dị ka International Astronomical Union nakweere na 1922, bụ "CrB".  [2] Oke ọnụ ọgụgụ ndị ọrụ egwu, dị ka onye Belgium na-egosi mbara igwe Eugène Delporte debere na 1930, ka ejiri polygon nke ngwaọrụ ọbụbụ (nke e sere na igbe ozi).  N'ime usoro nhazi nke equatorial, onye nhazi nhazi nke ịrị elu nke ndị ọrụ ndị a dị n'etiti 15h 16.0 m na 16h 25.1 m, ebe ndekọ dị n'etiti 39.71 ° na 25.54 °.  [3] O nwere ogbo - Corona Australis - na Southern Celestial Hemisphere .

] Kpakpando asaa nke mebere ụdị okpueze nkeiche nke akwụkwọ ahụ bụ ihe niile dị nha anọ ma e wezụga na- Kalikaka n'ime ha, Alpha Coronae Borealis .  Kpakpando isii ndị ọzọ bụ Theta, Beta, Gamma, Delta, Epsilon na Iota Coronae Borealis .  Onye na-ese foto German bụ Johann Bayer nyere akwụkwọ iri abụọ na aha Corona Borealis Bayer site na Alfa ruo Upsilon na akwụkwọ 1603 ya atlas Uranometria .  Achọpụtara Zeta Coronae Borealis ka ọ bụrụ ifafa abụọ site n'aka ndị na-egosi mbara igwe na ihe ndị na-egosi mgbaàmà ya Zeta 1 na Zeta 2 .  John Flamsteed mere otú ahụ na Nu Coronae Borealis;  Bayer kewara dị ka otu nwanna, Flamsteed ngwa na ọ bụ abụọ dị nso.  Ọmụm ha 20 na 21 Coronae Borealis na katalọgụ ya, n'ụdị aha Nu 1 na Nu 2 n'otu n'otu.  [1] Ndị na-egosi mbara igwe nke China chere na ndị na-anọghị na-agụ asterism, na-plọma Pi na Rho Coronae Borealis .  [2] N'ime oke ndị ahụ, ndị na-ekiri 37 na-egosi kore ma ọ bụ ha nhata n'ogo nha.  6.5.  [ala-alfa 2]