Shedir
HIP 3179; Alpha Cas; 18 Cas
HIP 3179; Alpha Cas; 18 Cas
Star
Cas
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
2.23
Spectral Type
K0- IIIa
Star Color
Red
(B-V 1.17)
Distance
228 ly
Position & Identifiers
RA
00h 40m 30.5s
Dec
+56° 32' 14.0"
Constellation
Cas
HR
168
HIP
3179
Bayer
Alpha
Flamsteed
18 Cas
Variable ID
Alp Cas
Double Cat
561
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System D: optical
Components
4
Component IDs
AD
Separation
24.8″
Companion Mag
14.0
Position Angle
280°
Star Colors
A: Red
Discoverer
BU 1349
Size Comparison
Querying VizieR for stellar data…
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
Cst 2.20 - 2.27V.
D is 8.5v K2IV-V, vsini <54k/s. All components probably optical.
SHEDIR; Schedar; Schedir.
Survey Image
Loading survey image…