84 UMa
HIP 67231; 84 UMa
DoubleStar
UMa
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.70
Variable Type
Alpha2 CVn (Magnetic Rotating)
Spectral Type
B9pEuCr
Star Color
Blue-white
(B-V -0.08)
Position & Identifiers
RA
13h 46m 35.7s
Dec
+54° 25' 58.0"
Constellation
UMa
HR
5187
HIP
67231
Flamsteed
84 UMa
Variable ID
CR UMa
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Visibility
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Multiple Star System
Separation
67.1″
Companion Mag
18.0
Companion Sp
M8V
Position Angle
83°
Star Colors
A: Blue-white
B: Red
Discoverer
LDS2914
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 67.1″ · PA: 83° · 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
Alpha CV 5.64 - 5.67V, 1.37996d, amp. 0.03U. Spectrum variable.
Survey Image
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