57 UMa
HIP 56034; 57 UMa
DoubleStar
UMa
Visible
Level 4
Large telescope (10"+) - Requires steady seeing
Physical Properties
Magnitude
5.31
Spectral Type
A2V
Star Color
White
(B-V 0.01)
Distance
130.5 ly
Position & Identifiers
RA
11h 29m 04.2s
Dec
+39° 20' 13.0"
Constellation
UMa
HR
4422
HIP
56034
Flamsteed
57 UMa
Double Cat
8175
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Visibility
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Multiple Star System
Components
6
Component IDs
AD
Separation
5.5″
Companion Mag
10.7
Position Angle
354°
Star Colors
A: White
Discoverer
STF1543
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 5.5″ · PA: 354° · 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
ADS 8175AB, 8.2 dG5, 4500y.
0.021".
Survey Image
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