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Phad

HIP 58001; Gamma UMa; 64 UMa

HIP 58001; Gamma UMa; 64 UMa Star UMa Visible Level 1 Naked eye / Binoculars
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Physical Properties

Magnitude 2.44
Spectral Type A1IV(n)
Star Color White (B-V 0.00)
Distance 83.2 ly

Position & Identifiers

RA 11h 53m 49.8s
Dec +53° 41' 41.0"
Constellation UMa
HR 4554
HIP 58001
Bayer Gamma
Flamsteed 64 UMa

Visibility

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Multiple Star System

Companion Mag 8.2
Companion Sp K2V
Position Angle 75°
Star Colors A: White B: Orange
Discoverer SHY 227

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

Color excess E(B-V) = 0.00.
"Dipper Stars;" Sirius group; UMa moving cluster.
Variable emission of K line and possible variation in H alpha.
PHAD; Phecda; Phekda; Phegda; Phekha; Phacd.

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