Mirach
Beta And
HIP 5447; Beta And; 43 And
DoubleStar
And
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
2.06
Range
2.01 - 2.1
Variable Type
Slow Irregular Variable
Spectral Type
M0+ IIIa
Star Color
Red
(B-V 1.58)
Temperature
2943 K
Radius
370.1 R☉
Distance
197.2 ly
Position & Identifiers
RA
01h 09m 43.9s
Dec
+35° 37' 14.0"
Constellation
And
HR
337
HIP
5447
Bayer
Beta
Flamsteed
43 And
Double Cat
949
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Visibility
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Multiple Star System
Components
5
Component IDs
AD
Separation
30.6″
Companion Mag
14.4
Position Angle
234°
Star Colors
A: Red
Discoverer
BAR 1
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 30.6″ · PA: 234° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
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
Ultraviolet FeII emission. Also classified B9III.
MIRACH; Merach; Mirac; Mirak; (al Mizar).
Survey Image
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