Theta Circini — Star in Circinus
Observe
1Physical Properties
Magnitude
5.11
Range
4.81 - 5.65
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B4Vnpe
Star Color
Blue
(B-V 0.00)
2Position & Identifiers
RA
14h 56m 44.0s
Dec
-62° 46' 51.0"
Constellation
Circinus
(Cir)
HR
5551
HIP
73129
HD
131492
SAO
252965
Bayer
Theta
Variable ID
The Cir
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | Hard+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 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
Mar – May
(peak: Apr)
5Survey Image
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6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
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14Stellar Notes
Gamma Cas 5.02 - 5.44V. Amp. 0.03 on time scale 2d reported. H alpha varies.
Sco-Cen assoc.
H alpha variable.
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.
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