Mu Her
HIP 86974; Mu Her; 86 Her
DoubleStar
Her
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.42
Spectral Type
G5IV
Star Color
Orange
(B-V 0.75)
Distance
27.1 ly
Position & Identifiers
RA
17h 46m 27.5s
Dec
+27° 43' 14.0"
Constellation
Her
HR
6623
HIP
86974
Bayer
Mu
Flamsteed
86 Her
Double Cat
10786
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Visibility
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Multiple Star System
Components
4
Component IDs
AxBC
Separation
33.8″
Companion Mag
12.7
Companion Sp
M4V
Position Angle
255°
Star Colors
A: Orange
B: Red
Discoverer
TRN 2
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 33.8″ · PA: 255° · 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
BC 10.3 dM4, 10.8, 43.20y, a = 1.360". This close pair forms a wider physical binary with component A.
Wolf 630 group.
0.132".
Survey Image
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