Mali lav (sazvežđe)
| Sazvežđe | |
 | |
| Latinsko ime | Leo Minor |
|---|---|
| Skraćenica | LMi |
| Genitiv | Leonis Minoris |
| Simbolizuje | pse Lavića |
| Rektascenzija | 10 |
| Deklinacija | +35 |
| Površina | 232 sq. deg. (64) |
| Najsjajnija zvezda | 46 Malog lava (3,83m) |
| Meteorski rojevi | Leonis minoridi |
| Susedna sazvežđa | |
| Vidljivo u rasponu +90° i −45°. U najboljem položaju za posmatranje u 21:00 čas u aprilu. | |
Mali lav (lat. Leo Minor) je sazvežđe severne hemisfere i jedno od 88 savremenih sazvežđa. Definisao ga je poljski astronom Johanes Hevelije u 1687. godine, od slabih zvezda između Velikog medveda i Lava.[1]
Zvezde[uredi | uredi izvor]
Najsjajnija zvezda je 46 Malog lava, jedina slučaj da zvezda koja je najsjajnija u nekom sazvežđu nema Bajerovu oznaku. 46 Malog lava se nalazi na 98 svetlosnih godina od Sunca, po veličini između subdžina i džina, K spektralne klase.
Beta Malog lava je binarna zvezda čija je primarna komponenta džin G klase a pratilac patuljak F klase.
20 Malog lava je još jedna dvojna zvezda, na svega 14,9 parseka od Sunca.
Objekti dubokog neba[uredi | uredi izvor]
Najvidljiviji objekat dubokog neba je NGC 3003, spiralna galaksija Volf-Rajeovog tipa asimetričnih krakova koji vidimo sa strane. Od Sunca je udaljena oko 80 miliona svetlosnih godina.
U Malom lavu se nalazi zanimljiv par koga čine IC 2497 i Hanin objekt. IC 2497 je spiralna galaksija u čijoj blizini je vidljiv objekt nedefinisanog porekla sa velikom rupom u sredini, nazvan po Hani van Erkel koja ga je otkrila. Hanin objekt je prečnika oko 16 000 svetlosnih godina (približno kao Mlečni put), a od Sunca je udaljen oko 700 000 000 svetlosnih godina, kao i IC 2497.
Istorija[uredi | uredi izvor]
Klasični astronomi Aratus i Ptolomej su primetili da je oblast sadašnjeg Malog Lava nedefinisana i da ne sadrži nikakve karakteristične obrasce. Ptolomej je klasifikovao zvezde u ovoj oblasti kao amorphōtoi (ne pripadaju konstelaciji) u sazvežđu Lava.[2]
Reference[uredi | uredi izvor]
- ^ Ridpath & Tirion 2001, str. 168–69.
- ^ Allen 1963, str. 263.
Literatura[uredi | uredi izvor]
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- Ridpath, Ian; Tirion, Wil (2001). Stars and Planets Guide. Princeton University Press. ISBN 0-691-08913-2.
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- Baldwin, Emily (25. 6. 2010). „Radio observations shed new light on Hanny's Voorwerp”. Astronomy Now. Pole Star Publications Ltd. Arhivirano iz originala 8. 3. 2012. g. Pristupljeno 8. 11. 2012.
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- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3344”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
- Jet Propulsion Laboratory, California Institute of Technology. „Results for NGC 3486”. NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Pristupljeno 23. 10. 2012.
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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.
- „21 Leonis Minoris – Variable Star of delta Sct type”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 15. 10. 2012.
- „37 Leonis Minoris”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Pristupljeno 5. 11. 2012.
- „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.
- „Interacting Galaxy Pair Arp 107”. Spitzer Space Telescope website. Spitzer Science Center, California Institute of Technology. 9. 6. 2005. Pristupljeno 19. 10. 2012.
Spoljašnje veze[uredi | uredi izvor]
- The Deep Photographic Guide to the Constellations: Leo Minor
- The clickable Leo Minor
- Sazvežđe Mali lav Arhivirano na sajtu Wayback Machine (12. april 2012) na TopAstronomer.com (jezik: engleski)
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