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Delta Muscae — Star in Musca

Magnitude 3.6m Star Musca (Mus) Visible
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Observe

1Physical Properties

Magnitude 3.62
Spectral Type K2III giant
Star Color Red (B-V 1.18)
Distance 91 ly

2Position & Identifiers

RA 13h 02m 16.2s
Dec -71° 32' 56.0"
Constellation Musca (Mus)
HR 4923
HIP 63613
HD 112985
SAO 257000
Bayer Delta
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 Mar – May (peak: Apr)

5Survey Image

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Explore

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

847d, K 7.8k/s, V0 +36.5k/s, asini 83.3.
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.

C105
NGC 4833
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 7.4 0.7° Musca
R Mus
Medium
Pulsating variable, period 7.5d
Variable Star mag 6.33 2.7° Musca
Collinder 261
Easy
Open cluster
Open Cluster mag 9.0 3.8° Musca
IC 2980
Hard+
Elliptical galaxy
Galaxy mag 12.41 5.3° Musca
Show on Map

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