Južna kruna (sazvežđe)
| Sazvežđe | |
 | |
| Latinsko ime | Corona Australis |
|---|---|
| Skraćenica | CrA |
| Genitiv | Coronae Australis / Coronae Austrinae[1][2][3] |
| Simbolizuje | Dionisova kruna |
| Rektascenzija | 19[4] |
| Deklinacija | -40[4] |
| Površina | 128 sq. deg. (80) |
| Najsjajnija zvezda | Alfa Južne krune (4,10m) |
| Meteorski rojevi | nema |
| Susedna sazvežđa | |
| Vidljivo u rasponu +40° i −90°. U najboljem položaju za posmatranje u 21:00 čas u avgustu.  | |
Južna kruna (lat. Corona Australis) je jedno od 88 modernih i 48 originalnih Ptolemejevih sazvežđa. Pre Ptolemeja nije smatrano za posebno sazvežđe, već samo za asterizam u Strelcu.
Zvezde[uredi | uredi izvor]
U južnoj kruni nema zvezda sjajnijih od četvrte magnitude. Najsjajnije su alfa i beta Južne krune, megnitude 4,11. Alfa je i jedina zvezda ovog sazvežđa sa ličnim imenom — Alfeka meridijana.
U Južnoj kruni se nalazi i jedna od najbližih (na oko 200 svetlosnih godina) neutronskih zvezda — RX J1856.5-3754 — za koju se smatra da je nastala u eksploziji supernove pre oko milion godina.
Gama, kapa i lambda Južne krune su binarne zvezde.
Objekti dubokog neba[uredi | uredi izvor]
Na pola puta između tete Južne krune i tete Škorpije se nalazi NGC 6541 — veliko, svetlo globularno jato. NGC 6729 je kombinacija refleksione i emisione magline koja se nalazi oko promenljive zvezde R Južne krune.
Reference[uredi | uredi izvor]
- ^ Bagnall 2012, str. 170.
- ^ „Corona”. Merriam-Webster Dictionary., „Australis”. Merriam-Webster Dictionary..
- ^ „Corona Australis”. Dictionary.com Unabridged. Random House.
- ^ a b IAU, The Constellations, Corona Australis.
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- „Beta Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 3. 7. 2012.
- „LTT 7565 (Gamma Coronae Australis)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 3. 7. 2012.
- „HR 7226 (Gamma Coronae Australis A)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 3. 7. 2012.
- „HR 7227 (Gamma Coronae Australis B)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 3. 7. 2012.
- „Epsilon Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 5. 7. 2012.
- „HR 6953 (Kappa² Coronae Australis)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 17. 8. 2012.
- „HR 6952 (Kappa¹ Coronae Australis)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 17. 8. 2012.
- „Lambda Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 21. 7. 2012.
- „HR 7050 (Mu Coronae Australis)”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 8. 9. 2012.
- „Zeta Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 9. 7. 2012.
- „Theta Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 15. 8. 2012.
- „R Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 4. 7. 2012.
- „TY Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 6. 7. 2012.
- „RU Coronae Australis”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 11. 7. 2012.
Spoljašnje veze[uredi | uredi izvor]
Vikimedijina Ostava ima datoteke za članak:
- Sazvežđe Južna kruna na TopAstronomer.com (jezik: engleski)
- The Deep Photographic Guide to the Constellations: Corona Australis
- Corona Australis photo
- Warburg Institute Iconographic Database (medieval and early modern images of Corona Australis)
| Državne | |
|---|---|
| Ostale | |
