Epsilon Aql
HIP 93244; Epsilon Aql; 13 Aql
DoubleStar
Aql
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.02
Spectral Type
K1-IIICN0.5Ba0.2
Star Color
Orange
(B-V 1.08)
Temperature
8519 K
Radius
203.0 R☉
Distance
2600.0 ly
Position & Identifiers
RA
18h 59m 37.4s
Dec
+15° 04' 06.0"
Constellation
Aql
HR
7176
HIP
93244
Bayer
Epsilon
Flamsteed
13 Aql
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
122.0″
Companion Mag
10.6
Position Angle
184°
Star Colors
A: Orange
Discoverer
ENG 65
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 122.0″ · PA: 184° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
V magnitudes scatter from 5.56 to 5.81, B-V from +0.35 to +0.45, U-B from -0.01 to +0.04.
Deneb el Okab; Deneb. Names combined with HR 7235.
Survey Image
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