V Aquilae — Variable Star in Aquila
Good (56/100)
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1Physical Properties
Magnitude
6.90
Range
6.67 - 7.22
Period
407 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
C5II
bright giant
Star Color
Deep ruby red
(B-V 4.19)
2Position & Identifiers
RA
19h 04m 24.2s
Dec
-05° 41' 06.0"
Constellation
Aquila
(Aql)
HR
7220
HIP
93666
HD
177336
SAO
142985
Variable ID
V Aql
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3How easy to follow?
Magnitude
6.6 – 8.4 mag
Amplitude
1.8 mag
Period
407 d
Type
SRB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Imp. | Imp. | Imp. |
| 50 mm finder 50mm finder | Medium+ | Medium+ | Medium |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Jun – Aug
(peak: Jul)
5Survey Image
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6Light Curve
7Comparison Stars for V Aql (6.6–8.4)
Nearby stable stars for estimating brightness (AAVSO)
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8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
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16Stellar Notes
SRb 6.6 - 8.4v, 10.6 - >12.4p, 353d. Mean mag. varies in cycle of about 2270d.
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.
Lambda Aql
Colorful double, sep 12.5″
Double Star
mag 3.44
0.9°
Aquila
M11
Wild Duck Cluster
Rich open cluster
Open Cluster
mag 5.8
3.4°
Scutum
NGC 6712
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.2
4.1°
Scutum
S Sct
Semi-regular variable, range 6.6–7.3
Variable Star
mag 6.80
4.1°
Scutum
R Sct
Mira-type variable, range 4.5–8.2
Variable Star
mag 5.20
4.2°
Scutum
U Aql
Pulsating variable, period 7.0d
Variable Star
mag 6.61
6.3°
Aquila
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