Мали медвед (сазвежђе) — разлика између измена

Мали медвед
Сазвежђе
	Списак звезда у сазвежђу Мали медвед
Латинско име	Ursa Minor
Скраћеница	UMi
Генитив	Ursae Minoris
Симболизује	малог медведа
Ректасцензија	15
Деклинација	+75
Површина	256 sq. deg. (56)
Најсјајнија звезда	Северњача (2.02m)
Метеорски ројеви	Урсиди
Суседна; сазвежђа	Змај; Жирафа; Цефеј;
	Видљиво у распону +90° и −10°.; У најбољем положају за посматрање у 21:00 час у јуну.

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Верзија на датум 2. фебруар 2022. у 17:06

Мали медвед (лат. Ursa Minor) је једно од 88 модерних и 48 Птолемејевих оригиналних сазвежђа, видљиво на северној земаљској полулопти.

Познато је по томе што се у врху „репа“ Малог медведа налази звезда Северњача, тренутно важећи оријентир за смер севера.^[3]

У српском језику, астеризам који ствара његових 7 сјајних звезда се још назива и „Мала кола“.

Карактеристике

Ursa Minor is bordered by Camelopardalis to the west, Draco to the west, and Cepheus to the east. Covering 256 square degrees, it ranks 56th of the 88 constellations in size. Ursa Minor is colloquially known in the US as the Little Dipper because its seven brightest stars seem to form the shape of a dipper (ladle or scoop). The star at the end of the dipper handle is Polaris. Polaris can also be found by following a line through the two stars—Alpha and Beta Ursae Majoris, popularly called the Pointers—that form the end of the "bowl" of the Big Dipper, for 30 degrees (three upright fists at arms' length) across the night sky.^[4] The four stars constituting the bowl of the Little Dipper are of second, third, fourth, and fifth magnitudes, respectively, and provide an easy guide to determining what magnitude stars are visible, useful for city dwellers or testing one's eyesight.^[5]

The three-letter abbreviation for the constellation, as adopted by the IAU (International Astronomical Union) in 1922, is "UMi".^[6] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 22 segments (illustrated in infobox). In the equatorial coordinate system, the right ascension coordinates of these borders lie between 08^h 41.4^m and 22^h 54.0^m , while the declination coordinates range from the north celestial pole to 65.40° in the south.^[1] Its position in the far northern celestial hemisphere means that the whole constellation is visible only to observers in the northern hemisphere.^[7]^[а]

Напомене

^ While parts of the constellation technically rise above the horizon to observers between the equator and 24°S, stars within a few degrees of the horizon are to all intents and purposes unobservable.^[7]

Референце

^ ^а ^б „Ursa Minor, Constellation Boundary”. The Constellations. International Astronomical Union. Приступљено 12. 5. 2014.
^ ^а ^б Department of Astronomy (1995). „Ursa Minor”. University of Wisconsin–Madison. Приступљено 27. 6. 2015.
^ Arnold, H. J. P.; Doherty, Paul; Moore, Patrick (1999). The Photographic Atlas of the Stars. Boca Raton, Florida: CRC Press. стр. 148. ISBN 978-0-7503-0654-6.
^ O'Meara, Stephen James (1998). The Messier Objects. Deep-sky Companions. Cambridge, UK: Cambridge University Press. стр. 10. ISBN 978-0-521-55332-2.
^ Olcott, William Tyler (2012) [1911]. Star Lore of All Ages: A Collection of Myths, Legends, and Facts Concerning the Constellations of the Northern Hemisphere. New York, New York: Courier Corporation. стр. 377. ISBN 978-0-486-14080-3.
^ Russell, Henry Norris (1922). „The New International Symbols for the Constellations”. Popular Astronomy. 30: 469. Bibcode:1922PA.....30..469R.
^ ^а ^б Ridpath, Ian. „Constellations: Lacerta–Vulpecula”. Star Tales. Self-published. Приступљено 21. 6. 2014.

Литература

Allen, Richard Hinckley (1963) [1899]. Star Names: Their Lore and Meaning (reprint изд.). New York, NY: Dover Publications. ISBN 978-0-486-21079-7.
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Bakich, Michael E. (1995). The Cambridge Guide to the Constellations. Cambridge University Press. ISBN 978-0-521-44921-2.
Bakich, Michael E. (2010). 1,001 Celestial Wonders to See Before You Die. Springer Science + Business Media. ISBN 978-1-4419-1777-5.
Coe, Steven R. (2007). Nebulae and how to observe them. Astronomers' observing guides. New York, New York: Springer. ISBN 978-1-84628-482-3.
Drake, Jeremy J.; Marshall, Herman L.; Dreizler, Stefan; Freeman, Peter E.; Fruscione, Antonella; Juda, Michael; Kashyap, Vinay; Nicastro, Fabrizio; Pease, Deron O.; Wargelin, Bradford J.; Werner, Klaus (јун 2002). „Is RX J1856.5−3754 a Quark Star?”. The Astrophysical Journal. 572 (2): 996—1001. Bibcode:2002ApJ...572..996D. S2CID 18481546. arXiv:astro-ph/0204159 . doi:10.1086/340368.
Ellyett, C. D.; Keay, C. S. L. (1956). „Radio Echo Observations of Meteor Activity in the Southern Hemisphere”. Australian Journal of Physics. 9 (4): 471—480. Bibcode:1956AuJPh...9..471E. doi:10.1071/PH560471 .
Falkner, David E. (2011). The Mythology of the Night Sky: An Amateur Astronomer's Guide to the Ancient Greek and Roman Legends. New York, New York: Springer. ISBN 978-1-4614-0136-0.
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Moore, Patrick; Tirion, Wil (1997). Cambridge Guide to Stars and Planets. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-58582-8.
Moore, Patrick (2000). The Data Book of Astronomy. Institute of Physics Publishing. ISBN 978-0-7503-0620-1.
Moore, Patrick (2000). Stargazing: Astronomy without a Telescope. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-79445-9.
Moore, Patrick (2005). The Observer's Year: 366 Nights of the Universe. Springer. ISBN 978-1-85233-884-8.
Moore, Patrick; Rees, Robin (2011). Patrick Moore's Data Book of Astronomy. Cambridge University Press. ISBN 978-1-139-04070-9.
Motz, Lloyd; Nathanson, Carol (1988). The Constellations. New York City: Doubleday. ISBN 978-0-385-17600-2.
Motz, Lloyd; Nathanson, Carol (1991). The Constellations: An Enthusiast's Guide to the Night Sky. London, United Kingdom: Aurum Press. ISBN 978-1-85410-088-7.
O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge, United Kingdom: Cambridge University Press. ISBN 978-0-521-19876-9.
Porter, Deborah Lynn (1996). From Deluge to Discourse: Myth, History, and the Generation of Chinese Fiction. Albany, New York: SUNY Press. ISBN 978-0-7914-3034-7.
Reipurth, Bo, ур. (2008). „The Corona Australis Star Forming Region”. Handbook of Star Forming Regions. II: The Southern Sky. ASP Monograph Publications. Bibcode:2008hsf2.book..735N.
Ridpath, Ian; Tirion, Wil (2017). Stars and Planets Guide (5th ed.). Princeton, New Jersey: Princeton University Press. ISBN 978-0-69-117788-5.
Rogers, J. H. (1998). „Origins of the ancient constellations: I. The Mesopotamian traditions”. Journal of the British Astronomical Association. 108 (1): 9—28. Bibcode:1998JBAA..108....9R.
Rogers, L. J.; Keay, C. S. L. (1993). Stohl, J.; Williams, I.P., ур. „Observations of some southern hemisphere meteor showers”. Meteoroids and Their Parent Bodies, Proceedings of the International Astronomical Symposium Held at Smolenice, Slovakia, July 6–12, 1992: 273—276. Bibcode:1993mtpb.conf..273R.
Royer, F.; Zorec, J.; Gómez, A.E. (фебруар 2007). „Rotational velocities of A-type stars. III. Velocity distributions”. Astronomy & Astrophysics. Astronomy and Astrophysics. 463 (2): 671—682. Bibcode:2007A&A...463..671R. S2CID 18475298. arXiv:astro-ph/0610785 . doi:10.1051/0004-6361:20065224.
Russell, Henry Norris (октобар 1922). „The new international symbols for the constellations”. Popular Astronomy. 30: 469. Bibcode:1922PA.....30..469R.
Sherrod, P. Clay; Koed, Thomas L. (2003). A Complete Manual of Amateur Astronomy: Tools and Techniques for Astronomical Observations. Courier Dover Publications. ISBN 978-0-486-42820-8.
Simpson, Phil (2012). Guidebook to the Constellations : Telescopic Sights, Tales, and Myths. Springer New York. ISBN 978-1-4419-6940-8.
Staal, Julius D. W. (1988). The New Patterns in the Sky: Myths and Legends of the Stars. McDonald and Woodward Publishing Company. ISBN 978-0-939923-04-5.
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Wagman, Morton (2003). Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others. Blacksburg, VA: The McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6.

Спољашње везе

The Deep Photographic Guide to the Constellations: Ursa Minor
The clickable Ursa Minor
Warburg Institute Iconographic Database (medieval and early modern images of Ursa Minor)
Ridpath, Ian. „Constellations”. Приступљено 25. 8. 2012.
Kaler, Jim. „Alfecca Meridiana”. Stars. University of Illinois. Приступљено 15. 8. 2012.

[8] While parts of the constellation technically rise above the horizon to observers between the equator and 24°S, stars within a few degrees of the horizon are to all intents and purposes unobservable.^[7]

[boundary-1] а ^б „Ursa Minor, Constellation Boundary”. The Constellations. International Astronomical Union. Приступљено 12. 5. 2014.

[Wisc-2] а ^б Department of Astronomy (1995). „Ursa Minor”. University of Wisconsin–Madison. Приступљено 27. 6. 2015.

[Arnold99-3] Arnold, H. J. P.; Doherty, Paul; Moore, Patrick (1999). The Photographic Atlas of the Stars. Boca Raton, Florida: CRC Press. стр. 148. ISBN 978-0-7503-0654-6.

[omeara1998-4] O'Meara, Stephen James (1998). The Messier Objects. Deep-sky Companions. Cambridge, UK: Cambridge University Press. стр. 10. ISBN 978-0-521-55332-2.

[5] Olcott, William Tyler (2012) [1911]. Star Lore of All Ages: A Collection of Myths, Legends, and Facts Concerning the Constellations of the Northern Hemisphere. New York, New York: Courier Corporation. стр. 377. ISBN 978-0-486-14080-3.

[pa30_469-6] Russell, Henry Norris (1922). „The New International Symbols for the Constellations”. Popular Astronomy. 30: 469. Bibcode:1922PA.....30..469R.

[tirionconst-7] а ^б Ridpath, Ian. „Constellations: Lacerta–Vulpecula”. Star Tales. Self-published. Приступљено 21. 6. 2014.

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Нормативна контрола
Државне	Немачка Израел Сједињене Државе
Остале	Енциклопедија Британика 2