V639 Cas
HIP 274
DoubleStar
Cas
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
6.24
Range
6.19 - 6.28
Period
2.9 days
Variable Type
ACYG
Spectral Type
B3Ia
Star Color
Yellow-white
(B-V 0.33)
Position & Identifiers
RA
00h 03m 25.7s
Dec
+63° 38' 31.0"
Constellation
Cas
HR
9097
HIP
274
Variable ID
V639 Cas
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Multiple Star System
Separation
0.2″
Companion Mag
6.5
Position Angle
214°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
CHR 121
Size Comparison
Querying VizieR for stellar data…
Compare Stars
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
Stellar Notes
I? Amp. 0.1B.
Cas OB5.
Survey Image
Loading survey image…