Jednorog (sazvežđe)
| Sazvežđe | |
 | |
| Latinsko ime | Monoceros |
|---|---|
| Skraćenica | Mon |
| Genitiv | Monocerotis |
| Simbolizuje | biblijskog jednoroga |
| Rektascenzija | 7,15 |
| Deklinacija | –5,74 |
| Površina | 482 sq. deg. (35) |
| Najsjajnija zvezda | Alfa Jednoroga (3,93m) |
| Meteorski rojevi | |
| Susedna sazvežđa | |
| Vidljivo u rasponu +75° i −90°. U najboljem položaju za posmatranje u 21:00 čas u februaru. | |
Jednorog (lat. Monoceros) je jedno od 88 modernih sazvežđa. Nalazi se na nebeskom ekvatoru i vidljiv je i sa većeg dela severne i cele južne hemisfere. Sazvežđe je u 17. veku definisao holandski astronom Petar Plancije.[1]
Zvezde[uredi | uredi izvor]
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Jednorog je relativno slabo sazvežđe, svega nekoliko zvezda je vidljivo golim okom. Najsjajnija je alfa Jednoroga, koja se nalazi na oko 144 svetlosnih godina i ima magnitudu 3,93. Druga po sjajnosti je gama Jednoroga, magnitude 3,98.
Beta Jednoroga je trojni sistem čije se pojedinačne komponente mogu videti već i malim teleskopom, a Vilhelm Heršel ih je nazvao „jednim od najlepših objekata na nebu“.
Plasketova zvezda magnitude 6,05 je jedna od najmasivnijih dvojnih zvezda — čine je dva džina ukupne mase oko 100 Sunčevih masa koje su udaljene jedna od druge manje nego Zemlja od Sunca.
Objekti dubokog neba[uredi | uredi izvor]
U Jednorogu se nalazi nekoliko zanimljivih objekata dubokog neba, uključujući maglinu NGC 2264 („Maglina Božićno drvo“) u čijem se središru nalazi zvezda S Jednoroga.
Maglina Rozeta (NGC 2237) je velika emisiona maglina koju iznutra osvetljava otvoreno zvezdano jato NGC 2244.
M50 (NGC 2323) je takođe otvoreno zvezdano jato.
Reference[uredi | uredi izvor]
Literatura[uredi | uredi izvor]
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- „SU Leonis Minoris – Variable Star of RS CVn type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
- „SV Leonis Minoris – Variable Star of RS CVn type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
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- „46 Leonis Minoris – Variable Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 2. 11. 2012.
- „GJ 356 B – Star in double system”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 20. 10. 2012.
- „HD 82886”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 19. 10. 2012.
- „LHS 2216 – High Proper Motion Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 21. 10. 2012.
- „R Leonis Minoris – Variable Star of Mira Ceti type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „RY Leonis Minoris – Pulsating White Dwarf”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „S Leonis Minoris – Variable Star of Mira Ceti type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
- „U Leonis Minoris – Semi-regular pulsating Star”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 22. 10. 2012.
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Spoljašnje veze[uredi | uredi izvor]
- VISTA Reveals the Secret of the Unicorn — ESO Photo Release
- The Deep Photographic Guide to the Constellations: Monoceros
- The Constellations Web Page - Monoceros
- Star Tales – Monoceros
- Sazvežđe Jednorog Arhivirano na sajtu Wayback Machine (18. decembar 2014) na TopAstronomer.com (jezik: engleski)
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