Zračna pumpa (zviježđe)

Zračna pumpa (lat.:Antlia)
Antlia
klikni za veću sliku
Kratica Ant
Genitiv Antliae
Simbolizira: zračna pumpa
Rektascenzija 10 h
Deklinacija −30°
Površina 239 sq. deg. (rang: 62.)
Broj zvijezda
sjajnijih od m = 3 		0
Najsjanija zvijezda α Ant
(Priv. mag. 4.25)
Meteorski pljuskovi

nema ih

Susjedna
zviježđa
Vidljivo u rasponu zemljopisnih širina: +45° i −90°
U najboljem položaju za promatranje u 21h je u mjesecu travnju.
vidi i Kategorija:Zračna pumpa (zviježđe)

Zviježđe Zračna pumpa (lat. Antlia) je relativno novo zviježđe, usvojeno tek u 18. stoljeću. Iako je ovo područje neba vidljivo iz Europe, stari Grci mu zbog nedostatka sjajnijih zvijezda nisu pridali neko posebno ime. Međunarodna Astronomska Unija uvrstila je

Zviježđe Zračna pumpa okružuju zviježđa Vodena zmija, Kompas, Jedro (broda Argo) te Kentaur.

Sjajne zvijezde

Zračna je pumpa zviježđe bez sjajnih zvijezda. Najsjajnija zvijezda je α Ant (spektralna klasa K4 III), prividnog sjaja od tek 4.25.

Najzanimljiviji objekti dubokog svemira

Povijest

Francuski astronom Abbé Nicolas Louis de Lacaille uveo je 13 zviježđa južnog neba da bi pokrio dijelove neba sa malom gustoćom sjajnih zvijezda. Jedno od tih zviježđa je i Zračna pumpa (Antilia). Prvotno je zviježđe dobilo naziv Antlia pneumatica (zračna pumpa, koju je izumio Robert Boyle)), a danas se službeno naziva samo Antilia.

Lacaille je kod imenovana ovih 13 zviježđa odbacio tradiciju imenovanja zviježđa po mitološkim likovima i nazvao ih uglavnom po instrumentima koji su se tada koristili u znanosti.


Odabrene zvijezde

U tablici su navedene sve zvijezde kojima je pridijeljeno ime, te neke koje se po nečemu ističu.

BD Ime i druge oznake Mag. Udaljenost u svj. godinama Komentari
α Alpha Antliae 4.28 366
ε Epsilon Antliae 4.51 700
ι Iota Antliae 4.60 199
θ Theta Antliae 4.78 384
η Eta Antliae 5.23 106
δ Delta Antliae 5.57 481
ζ¹ Zeta-1 Antliae 5.75 372 binarna zvijezda; magnitude komponenti: 6.18, 7.00
ζ² Zeta-2 Antliae 5.91 374
HD 93083 8.33 94.2 otkriven planet

Izvor: The Bright Star Catalogue, 5th Revised Ed., The Hipparcos Catalogue, ESA SP-1200 Slabašna zvijezda DENIS 1048-39, otkrivena 2000. U ovom zviježđu, možda je udaljena samo 13.2 s.g. od Sunca ([2] Arhivirano 2011-05-14 na Wayback Machine-u).

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