S Scuti — Variable Star in Scutum
Good (54/100)
Observe
1Physical Properties
Magnitude
6.80
Range
6.60 - 7.30
Period
150 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
C5II
bright giant
Star Color
Deep ruby red
(B-V 3.09)
2Position & Identifiers
RA
18h 50m 20.0s
Dec
-07° 54' 27.0"
Constellation
Scutum
(Sct)
HR
7089
HIP
92442
HD
174325
SAO
142674
Variable ID
S Sct
Double Cat
11726
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3How easy to follow?
Magnitude
6.6 – 7.3 mag
Amplitude
0.7 mag
Period
149.7 d
Type
SRB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard | Imp. | Imp. |
| 50 mm finder 50mm finder | Medium | Medium | Hard+ |
| 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
May – Jul
(peak: Jun)
5Survey Image
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6Light Curve
7Comparison Stars for S Sct (6.6–7.3)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
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
Discover
16Stellar Notes
ADS 11726A, SR 9.7 - >10.9p, 148.0d.
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.
NGC 6712
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 8.2
1.0°
Scutum
M11
NGC 6705
Rich open cluster
Open Cluster
mag 5.8
1.7°
Scutum
R Sct
Mira-type variable, range 4.5–8.2
Variable Star
mag 5.20
2.3°
Scutum
V Aql
Semi-regular variable, range 6.6–8.4
Variable Star
mag 6.90
4.1°
Aquila
Lambda Aql
Colorful double, sep 12.5″
Double Star
mag 3.44
5.0°
Aquila
U Aql
Pulsating variable, period 7.0d
Variable Star
mag 6.61
9.7°
Aquila
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Article
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Mythology, bright stars, and deep-sky highlights.
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