Menu

Collinder 97 — Open Cluster in Monoceros

Open Cluster Excellent (64/100)
Magnitude 5.4m OpenCluster Monoceros Visible
Star Map
+ List + Plan Star Hop

Observe

1Properties

Magnitude 5.4
Angular Size 25 arcmin
Open Cluster

Position & Identifiers

RA 06h 31m 18.0s
Dec +05° 55' 00.0"
Constellation Monoceros
Catalog Cr 97

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 Nov – Jan (peak: Dec)

4 Eyepiece View

Log in to set your own equipment
50x TFOV: 1.0° Lim. mag: 13.6
N E

Collinder 97 · 25.0′ diameter

5 Best Magnification

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.

Rosette nebula
NGC 2239
Easy
Rich open cluster
Open Cluster mag 4.80 1.0° Monoceros
NGC 2244
Easy
Open cluster
Open Cluster mag 4.8 1.0° Monoceros
NGC 2236
Easy
Open cluster
Open Cluster mag 8.5 1.0° Monoceros
NGC 2252
Easy
Open cluster
Open Cluster mag 8.0 1.0° Monoceros
Rosette Nebula
NGC 2237
Medium+
Emission nebula — try an OIII filter
Emission Nebula mag 6.0 1.0° Monoceros
T Mon
Easy
Pulsating variable, period 27.0d
Variable Star mag 5.98 1.9° Monoceros
Show on Map

Explore Nightbase

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

The Life of Stars
From birth in a nebula to spectacular death — how stars are born, shine, swell, and die, and how to read the clues in their starlight.
Article
Monoceros
Mythology, bright stars, and deep-sky highlights.
Constellation
Jupiter
The Great Red Spot, cloud belts, and the Galilean moons.
Deep dive
}