V373 Cassiopeiae — Variable Star in Cassiopeia
Good (58/100)
Observe
1Physical Properties
Magnitude
6.00
Range
5.96 - 6.06
Period
13.4 days
Variable Type
Luminous Blue Variable
Spectral Type
B0.5II+B0.5II
bright giant
Star Color
Yellow-white
(B-V 0.21)
Distance
112 ly
2Position & Identifiers
RA
23h 55m 33.7s
Dec
+57° 24' 44.0"
Constellation
Cassiopeia
(Cas)
HR
9052
HIP
117957
HD
224151
SAO
35899
Variable ID
V373 Cas
Querying VizieR catalog...
3How easy to follow?
Magnitude
5.9 – 6.3 mag
Amplitude
0.4 mag
Period
13.42 d
Type
HB
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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 | Hard+ | Hard+ | Hard+ |
| 150 mm telescope 150mm scope | Hard+ | Hard+ | Hard+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Out of reach for typical amateur telescopes, even at Bortle 3.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Aug – Oct
(peak: Sep)
5Survey Image
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6Light Curve
7Comparison Stars for V373 Cas (5.9–6.3)
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
E:/GS 5.9 - 6.3v, 13.4192d. Intrinsic variable which may be eclipsing.
Wide pair with HR 9045.
13.4187d, K 117.5k/s, V0 -24.3k/s, msin3i 13.5, asini 21.6.
Cas OB9.
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.
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Article
Cassiopeia
Mythology, bright stars, and deep-sky highlights.
Constellation
