S Mus
Observable Variable Star
Good (58/100)
Range: 5.9 - 6.5, Period: 9.7d
HIP 59551
VariableStar
Mus
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
6.17
Spectral Type
F6Ib
Star Color
Orange
(B-V 0.84)
Position & Identifiers
RA
12h 12m 46.8s
Dec
-70° 09' 07.0"
Constellation
Mus
HR
4645
HIP
59551
Variable ID
S Mus
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Visibility
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Comparison Stars for S Mus (5.9–6.5)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Separation
5.0″
Companion Mag
17.9
Companion Sp
B6V
Position Angle
183°
Star Colors
A: Orange
B: Blue-white
Discoverer
EVS 17
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 5.0″ · PA: 183° · 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
CDelta 5.89 - 6.49V. Period changes 9.66011 to 9.66007d.
Shortest known orbital per., 506d, for SB with Cepheid primary. Blue companion.
Also classified F6Ib-G0.
Survey Image
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