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IC 4651 — Open Cluster in Ara

Open Cluster Good (53/100)
Magnitude 6.9m OpenCluster Ara Visible
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1Properties

Magnitude 6.9
Angular Size 9.6′
Cl, pC

Position & Identifiers

RA 17h 24m 49.1s
Dec -49° 56' 17.5"
Constellation Ara
Catalog IC 4651

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Easy Easy Easy
150mm Newt. Easy Easy Easy
C8 203mm Easy Easy Easy
Easy Medium Hard Very hard Impossible

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

Easy on Seestar S50

3Visibility

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Best season May – Jul (peak: Jun)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

IC 4651 · 9.6′ diameter

5 Best Magnification

Explore

6 Classification Decoder

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.

C81
NGC 6352
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 8.2 1.5° Ara
NGC 6253
Easy
Open cluster
Open Cluster mag 10.0 4.9° Ara
V539 Ara
Medium
Eclipsing binary, period 3.2d
Variable Star mag 5.92 5.4° Ara
NGC 6250
Easy
Rich open cluster
Open Cluster mag 5.9 6.0° Ara
NGC 6208
Easy
Open cluster
Open Cluster mag 7.2 6.6° Ara
NGC 6259
Easy
Open cluster
Open Cluster mag 8.0 6.7° Scorpius
Show on Map

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