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NGC 2420 — Open Cluster in Gemini

Open Cluster Good (53/100)
Magnitude 8.3m OpenCluster Gemini (Gem) Visible
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1Properties

Magnitude 8.3
Angular Size 7.5′
Cl, cL, Ri, C, st 11...18

Position & Identifiers

RA 07h 38m 23.9s
Dec +21° 34' 26.8"
Constellation Gemini (Gem)
Catalog NGC 2420

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 Dec – Feb (peak: Jan)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 2420 · 7.5′ 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.

Eskimo Nebula
NGC 2392
Medium+
Small bright planetary nebula
Planetary Nebula mag 9.2 2.2° Gemini
NGC 2418
Hard+
Elliptical galaxy
Galaxy mag 13.0 3.7° Gemini
NGC 2395
Easy
Open cluster
Open Cluster mag 8.0 8.4° Gemini
NGC 2331
Easy
Open cluster
Open Cluster mag 9.0 9.1° Gemini
NGC 2355
Easy
Open cluster
Open Cluster mag 10.0 9.3° Gemini
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