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Lambda Arae — Star in Ara

Magnitude 4.8m Star Ara Visible
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1Physical Properties

Magnitude 4.77
Variable Type Delta Scuti (Pulsating)
Spectral Type F3IV subgiant
Star Color Yellow-white (B-V 0.40)
Distance 74 ly

2Position & Identifiers

RA 17h 40m 23.6s
Dec -49° 24' 56.0"
Constellation Ara
HR 6569
HIP 86486
HD 160032
SAO 228257
Bayer Lambda
Variable ID Var?
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ Medium Hard+
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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Explore

6

Size Comparison

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7

Compare Stars

8

Spectral Classification

9

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
10

Stellar Lifecycle

11

Blackbody Spectrum

12

Stellar Absorption Spectrum

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

13

Stellar Fusion

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14Stellar Notes

Delta Sct?
15

Light Travel Time Machine

16

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.

IC 4651
Easy
Rich open cluster
Open Cluster mag 6.9 2.6° Ara
NGC 6352
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 8.2 2.6° Ara
V539 Ara
Medium
Eclipsing binary, period 3.2d
Variable Star mag 5.92 4.5° Ara
Sargas
HIP 86228; Theta Scorpii
Easy
Easy double, sep 6.5″
Double Star mag 1.87 6.4° Scorpius
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