S Normae — Variable Star in Norma
Excellent (62/100)
Observe
1Physical Properties
Magnitude
6.49
Range
6.12 - 6.77
Period
9.8 days
Variable Type
Classical Cepheid
Spectral Type
F8-G0Ib
Star Color
Yellow
(B-V 1.00)
(reddened by dust)
2Position & Identifiers
RA
16h 18m 51.9s
Dec
-57° 53' 59.0"
Constellation
Norma
(Nor)
HR
6062
HIP
79932
HD
146323
SAO
243586
Variable ID
S Nor
Querying VizieR catalog...
3How easy to follow?
Magnitude
6.1 – 6.8 mag
Amplitude
0.6 mag
Period
9.75 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
Apr – Jun
(peak: May)
5Survey Image
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6Light Curve
7Comparison Stars for S Nor (6.1–6.8)
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
CDelta 6.12 - 6.77V, 9.75411d. Period changes. Possibly blue companion.
In cluster NGC 6087 #13.
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.
Explore Nightbase
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1919 eclipse expedition confirming general relativity; first theory of stellar interiors; the Eddington limit
Biography
Variable Stars — A Guide for Observers
A practical guide to visual observation of variable stars: estimating magnitudes, finding comparison stars, recording data, and contributing to science with AAVSO.
Article
Norma
Mythology, bright stars, and deep-sky highlights.
Constellation
