Mu Per
HIP 19812; Mu Per; 51 Per
DoubleStar
Per
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
4.14
Spectral Type
G0Ib
Star Color
Orange
(B-V 0.95)
Distance
191.9 ly
Position & Identifiers
RA
04h 14m 53.9s
Dec
+48° 24' 34.0"
Constellation
Per
HR
1303
HIP
19812
Bayer
Mu
Flamsteed
51 Per
Double Cat
3071
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Visibility
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Multiple Star System
Components
5
Component IDs
AC
Separation
15.0″
Companion Mag
10.3
Companion Sp
B8
Position Angle
349°
Star Colors
A: Orange
B: Blue-white
Discoverer
STT 73
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 15.0″ · PA: 349° · 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 3071A, 4.1 - 4.24V.
A* 4.13 G0Ib, 0.778y, a = 0.019". AB CPM; B, 11.8v at 15". C , 10.25V, +0.47(B-V), +0.06(U-B), B8.
283.272d, K 20.7k/s, V0 +7.7k/s, asini 80.5. Unresolved by speckle interferometry.
Survey Image
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