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NGC 4230 — Open Cluster in Centaurus

Open Cluster Good (45/100)
Magnitude 9.0m OpenCluster Centaurus (Cen) Visible
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1Properties

Magnitude 9.0
Angular Size 5.4′
Cl, F, pL, iF, st 13...15

Position & Identifiers

RA 12h 17m 09.4s
Dec -55° 17' 10.0"
Constellation Centaurus (Cen)
Catalog NGC 4230

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Easy Easy Medium+
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 Feb – Apr (peak: Mar)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 4230 · 5.4′ diameter

5 Best Magnification

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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.

NGC 4337
Easy
Open cluster
Open Cluster mag 8.9 3.0° Crux
NGC 3960
Easy
Open cluster
Open Cluster mag 8.3 3.8° Centaurus
Blue planetary
NGC 3918
Medium+
Small bright planetary nebula
Planetary Nebula mag 8.0 4.2° Centaurus
NGC 3882
Hard+
Barred spiral galaxy
Galaxy mag 11.81 4.5° Centaurus
NGC 4439
Easy
Open cluster
Open Cluster mag 8.4 5.0° Crux
NGC 4103
Easy
Open cluster
Open Cluster mag 7.0 6.1° Crux
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