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Old 08-08-2018, 06:18 PM
Tropo-Bob (Bob)
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Tropo-Bob is offline
 
Join Date: Sep 2013
Location: Cairns
Posts: 1,584
AQUILA - The Grand Tour

Below are the subjects in Aquila that I wish to view:-


Objects of interest.

Eta Aql. A well know Cepheid variable. Its magnitude ranges from 3.5 To 4.3 over 7 days. One day, I will buy myself a decent camera and take some wide-angle images of this.
https://en.wikipedia.org/wiki/Eta_Aquilae

Pi Aql. A close binary. (Separation 1.4", mags 6.3 &6.8)
https://en.wikipedia.org/wiki/Pi_Aquilae

15 Aql. A colourful double.
https://en.wikipedia.org/wiki/15_Aquilae

57 Aql. A showpiece double near the boarders with Capricornus & Sagittarius.
https://en.wikipedia.org/wiki/57_Aquilae

Struve 2644. Location 20h.12; + 0.52. (Separation 2.6", mags 6.9 & 7.1)


The Main Stars.

Alpha Aquilae (Aql). Altair is one of the vertices of the very large asterism known as the Summer Triangle (the other two vertices are marked by Deneb and Vega.) Altair is only 17 LYs away.
https://en.wikipedia.org/wiki/Altair

Beta Aql. Alshain is a subgiant with 1.3 Solar masses and with a luminosity 6 times the Sun. 45 LYs away.
https://en.wikipedia.org/wiki/Beta_Aquilae

Gamma Aql. Tarazed is a young star (100 million years old) that will become a white dwarf. 395 LYs away.
https://en.wikipedia.org/wiki/Gamma_Aquilae

Delta Aql. Okab. An astrometric binary some 51 LYs away.
https://en.wikipedia.org/wiki/Delta_Aquilae

Epsilon Aql. Deneb el Okab (meaning the tail of the eagle) is a giant star some 155 LYs away.


Note. I do not report on the already well-known Messier and Caldwell objects, but these are those in Aquila:
Messiers: Nil
Caldwell: Nil
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