Menu

IC 5146 C — Open Cluster in Cygnus

Open Cluster Good (50/100)
Magnitude 7.2m OpenCluster Cygnus (Cyg) Visible
Star Map
+ List + Plan Star Hop

Observe

1Properties

Magnitude 7.2
Angular Size 10.0′
pB, vL, iF, *9.5 in M

Position & Identifiers

RA 21h 53m 24.0s
Dec +47° 16' 00.0"
Constellation Cygnus (Cyg)
Catalog IC 5146 C

2How easy to spot?

Sign in and configure your equipment and default location to see a personalized row.
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

Set a location in User Settings to see visibility data.

Best season Jul – Sep (peak: Aug)

4 Eyepiece View

Log in to set your own equipment
125x TFOV: 0.4° Lim. mag: 13.6
N E

IC 5146 C · 10.0′ 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.

Cocoon Nebula
IC 5146
Medium+
Emission nebula — try an OIII filter
Emission Nebula mag 10.0 0.0° Cygnus
NGC 7209
Easy
Rich open cluster
Open Cluster mag 6.7 2.2° Lacerta
V1339 Cyg
Easy
Semi-regular variable, range 5.9–7.1
Variable Star mag 6.17 2.5° Cygnus
M39
NGC 7092
Easy
Rich open cluster
Open Cluster mag 4.6 3.8° Cygnus
NGC 7082
Easy
Open cluster
Open Cluster mag 7.2 4.1° Cygnus
C16
NGC 7243
Easy
Rich open cluster
Open Cluster mag 6.4 4.4° Lacerta
Show on Map

Explore Nightbase

Related knowledge, tools, and stories — no observation planning required.

The Hertzsprung-Russell Diagram — Reading Stars Like a Map
The HR diagram turns the night sky into a physics map: every named star has a spot, every spot tells you mass, age, and fate. A guide for amateur observers.
Article
Cygnus
Mythology, bright stars, and deep-sky highlights.
Constellation
Venus
Phases, transits, and the brightest planet in the sky.
Deep dive
}