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Merak

Beta UMa

HIP 53910; Beta UMa; 48 UMa Star UMa Visible Level 1 Naked eye / Binoculars
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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

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.

Survey Image

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