28 UMa
HIP 47911; 28 UMa
DoubleStar
UMa
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
6.34
Spectral Type
F2V
Star Color
Yellow-white
(B-V 0.31)
Position & Identifiers
RA
09h 45m 55.4s
Dec
+63° 39' 12.0"
Constellation
UMa
HR
3865
HIP
47911
Flamsteed
28 UMa
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Visibility
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Multiple Star System
Separation
6.2″
Companion Mag
11.7
Position Angle
25°
Star Colors
A: Yellow-white
Discoverer
KUI 43
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.2″ · PA: 25° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
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
Primary of visual double.
Survey Image
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