15 Cnc
Observable Variable Star
Good (52/100)
Range: 5.53 - 5.65, Period: 3.3d, Type: ACV
HIP 40240; 15 Cnc
VariableStar
Cnc
Visible
Level 3
Medium telescope (6-8") - Monitor brightness changes
Physical Properties
Magnitude
5.64
Range
5.53 - 5.65
Period
3.309 days
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
B9pSiCr
Star Color
Blue-white
(B-V -0.07)
Position & Identifiers
RA
08h 13m 08.9s
Dec
+29° 39' 24.0"
Constellation
Cnc
HR
3215
HIP
40240
Flamsteed
15 Cnc
Variable ID
BM Cnc
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Visibility
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Light Curve
Comparison Stars for 15 Cnc (5.5–5.7)
Nearby stable stars for estimating brightness (AAVSO)
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Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
Alpha CV 5.53 - 5.65V, 4.116d.
585.4154d, K 12.1k/s, V0 +17.8k/s, asini 94.6.
15 Cnc is also Psi Gem, in Cancer.
Survey Image
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