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Beta Scuti — Star in Scutum

Magnitude 4.2m Star Scutum (Sct) Visible
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1Physical Properties

Magnitude 4.22
Spectral Type G4IIa supergiant
Star Color Orange (B-V 1.10)
Distance 172 ly

2Position & Identifiers

RA 18h 47m 10.5s
Dec -04° 44' 52.0"
Constellation Scutum (Sct)
HR 7063
HIP 92175
HD 173764
SAO 142618
Bayer Beta
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ 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 May – Jul (peak: Jun)

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

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15Stellar Notes

834d, K 16.7k/s, V0 -21.9k/s, asini 179. Unresolved by speckle interferometry.
Sct OB2.
H alpha emission. Also classified G5II CN0.5 Fe1 Hdel1. IUE observations indicate a B9.5 companion.
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.

R Sct
Easy
Mira-type variable, range 4.5–8.2
Variable Star mag 5.20 1.0° Scutum
NGC 6704
Easy
Open cluster
Open Cluster mag 9.2 1.0° Scutum
5 Aql
Easy
Easy double, sep 12.5″
Double Star mag 5.90 3.8° Aquila
NGC 6712
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 8.2 4.2° Scutum
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