U Aquilae — Variable Star in Aquila
Excellent (62/100)
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1Physical Properties
Magnitude
6.61
Range
6.08 - 6.86
Period
7.0 days
Variable Type
Classical Cepheid
Spectral Type
F7-G1I-II
Star Color
Yellow
(B-V 1.10)
(reddened by dust)
Distance
251 ly
2Position & Identifiers
RA
19h 29m 21.5s
Dec
-07° 02' 38.0"
Constellation
Aquila
(Aql)
HR
7402
HIP
95820
HD
183344
SAO
143454
Variable ID
U Aql
Double Cat
12503
Querying VizieR catalog...
3How easy to follow?
Magnitude
6.1 – 6.9 mag
Amplitude
0.8 mag
Period
7.02 d
Type
DCEP
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard | V. hard | Imp. |
| 50 mm finder 50mm finder | Medium | Medium | Medium |
| 150 mm telescope 150mm scope | Medium+ | Medium+ | Medium+ |
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 U Aql (6.1–6.9)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
Querying VizieR for stellar data…
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
Discover
16Stellar Notes
ADS 12503A, CDelta 6.08 - 6.86V, 7.02393d. Period changes.
AB fixed. C, 7v at 2", binary.
Also classified F5I-II-G1.
17
Light Travel Time Machine
18
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.
Lambda Aql
Colorful double, sep 12.5″
Double Star
mag 3.44
6.1°
Aquila
V Aql
Semi-regular variable, range 6.6–8.4
Variable Star
mag 6.90
6.3°
Aquila
NGC 6835
Edge-on galaxy
Galaxy
mag 12.5
8.3°
Sagittarius
NGC 6712
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.2
9.1°
Scutum
V505 Sgr
Eclipsing binary, period 1.2d
Variable Star
mag 6.48
9.5°
Sagittarius
S Sct
Semi-regular variable, range 6.6–7.3
Variable Star
mag 6.80
9.7°
Scutum
Eta Aql
Pulsating variable, period 7.2d
Variable Star
mag 3.90
9.9°
Aquila
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