Merak
Beta UMa
HIP 53910; Beta UMa; 48 UMa
Star
UMa
Visible
Level 1
Naked eye / Binoculars
Physical Properties
Magnitude
2.37
Spectral Type
A1IVspSr
Star Color
Blue-white
(B-V -0.02)
Temperature
2943 K
Radius
370.1 R☉
Distance
79.8 ly
Position & Identifiers
RA
11h 01m 50.5s
Dec
+56° 22' 57.0"
Constellation
UMa
HR
4295
HIP
53910
Bayer
Beta
Flamsteed
48 UMa
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Visibility
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Size Comparison
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
"Dipper Stars;" UMa cluster; Sirius group; UMa stream.
MERAK; Mirak.
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