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Gamma Muscae — Star in Musca

Magnitude 3.9m Star Musca (Mus) Visible
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1Physical Properties

Magnitude 3.87
Spectral Type B4V
Star Color Blue (B-V -0.15)
Distance 325 ly

2Position & Identifiers

RA 12h 32m 28.0s
Dec -72° 07' 59.0"
Constellation Musca (Mus)
HR 4773
HIP 61199
HD 109026
SAO 256955
Bayer Gamma
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Medium+ Medium+
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Feb – Apr (peak: Mar)

5Survey Image

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7

Size Comparison

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8

Compare Stars

9

Spectral Classification

10

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
11

Stellar Lifecycle

12

Blackbody Spectrum

13

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

14

Stellar Fusion

Discover

15Stellar Notes

Sco-Cen stream; probable member of Sco-Cen cluster; lower Cen group of Sco-Cen assoc.
16

Light Travel Time Machine

17

Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

C108
NGC 4372
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 7.8 0.7° Musca
S Mus
Medium
Pulsating variable, period 9.7d
Variable Star mag 6.17 2.5° Musca
IC 2980
Hard+
Elliptical galaxy
Galaxy mag 12.41 3.0° Musca
Collinder 261
Easy
Open cluster
Open Cluster mag 9.0 3.8° Musca
Show on Map

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