Vaga (sazvežđe)
Vaga (lat. Libra) jedno je od sazvežđa zodijaka, sa znakom 
, a pozicionirano je između Device i Škorpije.
| Sazvežđe | |
 | |
| Latinsko ime | Libra |
|---|---|
| Skraćenica | Lib |
| Genitiv | Librae |
| Simbolizuje | Vaga ♎ |
| Rektascenzija | 15 |
| Deklinacija | -15 |
| Površina | 538 sq. deg. (29.) |
| Najsjajnija zvezda | Beta Vage (2,61m) |
| Meteorski rojevi | Majski libridi |
| Susedna sazvežđa | |
| Vidljivo u rasponu +65° i −90°. U najboljem položaju za posmatranje u 21:00 čas u junu. | |
Osobine uredi
Zvezde uredi
Sve u svemu, postoje 83 zvezde unutar granica sazvežđa koje su svetlije od ili jednake prividnoj magnitude 6,5.[a][2]
Konstelacija uredi
Vaga se graniči sa glavom Zmije na severu, Device na severozapadu, Hidre na jugozapadu, ugao Kentaura na jugozapadu, Lupusa na jugu, Škorpije na istoku i Zmijonoša na severoistoku. Pokrivajući 538,1 kvadratnih stepeni i 1,304% noćnog neba, zauzima 29. mesto od 88 sazvežđa po veličini.[2] Skraćenica od tri slova za sazvežđe, koju je usvojila Međunarodna astronomska unija 1922, je „Lib“.[3] Zvanične granice sazvežđa, kako ih je postavio Ežen Delport 1930. godine, definisane su poligonom od 12 segmenata (ilustrovano u infokutiji). U ekvatorijalnom koordinatnom sistemu, koordinate pravoascenzije ovih granica leže između 14h 22m 08.08s i 16h 02m 17.23s, dok su koordinate deklinacije između -0,47° i -30,00°.[4]
Napomene uredi
Reference uredi
- ^ Bortle, John E. (februar 2001). „The Bortle Dark-Sky Scale”. Sky & Telescope. Sky Publishing Corporation. Arhivirano iz originala 31. 03. 2014. g. Pristupljeno 3. 4. 2016.
- ^ a b Ridpath, Ian. „Constellations: Lacerta–Vulpecula”. Star Tales. Self-published. Pristupljeno 3. 4. 2016.
- ^ Russell, Henry Norris (1922). „The New International Symbols for the Constellations”. Popular Astronomy. 30: 469. Bibcode:1922PA.....30..469R.
- ^ „Libra, Constellation Boundary”. The Constellations. International Astronomical Union. Pristupljeno 3. 4. 2016.
Literatura uredi
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Spoljašnje veze uredi
Vikimedijina Ostava ima datoteke za članak: