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Iota Aquilae — Star in Aquila

Magnitude 4.4m Star Aquila (Aql) Visible
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1Physical Properties

Magnitude 4.36
Range 4.34 - 4.36
Variable Type Variable (Unclassified)
Spectral Type B5III giant
Star Color Blue-white (B-V -0.08)
Distance 815 ly

2Position & Identifiers

RA 19h 36m 43.3s
Dec -01° 17' 11.0"
Constellation Aquila (Aql)
HR 7447
HIP 96468
HD 184930
SAO 143597
Bayer Iota
Flamsteed 41 Aql
Double Cat 12663
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ Medium+ Medium
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Jun – Aug (peak: Jul)

5Survey Image

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7

Size Comparison

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8

Compare Stars

9

Spectral Classification

10

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
11

Stellar Lifecycle

12

Blackbody Spectrum

13

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

14

Stellar Fusion

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15Stellar Notes

Member of the local association (Pleiades group).
16

Light Travel Time Machine

17

Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

Eta Aql
Medium+
Pulsating variable, period 7.2d
Variable Star mag 3.90 4.6° Aquila
NGC 6760
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 9.1 6.8° Aquila
NGC 6755
Easy
Open cluster
Open Cluster mag 7.5 9.1° Aquila
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