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NGC 1902 — Open Cluster in Dorado

Open Cluster Fair (29/100)
Magnitude 11.8m OpenCluster Dorado (Dor) Visible
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1Properties

Magnitude 11.77
Angular Size 1.7′
glob. cl. , pB, pL, R, pmbM, rr

Position & Identifiers

RA 05h 18m 19.1s
Dec -66° 37' 38.6"
Constellation Dorado (Dor)
Catalog NGC 1902

2How easy to spot?

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

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

Medium on Seestar S50

3Visibility

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Best season Nov – Jan (peak: Dec)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 1902 · 1.7′ 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 1882
Hard+
Open cluster
Open Cluster mag 12.33 0.6° Dorado
NGC 1940
Hard+
Open cluster
Open Cluster mag 11.91 0.7° Dorado
NGC 1951
Easy
Open cluster
Open Cluster mag 10.0 0.8° Dorado
NGC 1978
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 9.9 1.1° Dorado
NGC 2002
Medium+
Open cluster
Open Cluster mag 10.84 1.2° Dorado
IC 2128
Hard+
Diffuse nebula
Diffuse Nebula mag 11.10 1.5° Dorado
NGC 1892
Hard+
Bright spiral galaxy
Galaxy mag 12.29 1.7° Dorado
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