Observe
1Properties
Magnitude
7.4
Angular Size
6.3′
Cl, vB, vL, lC, st 12...14
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Position & Identifiers
2How easy to spot?
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Easy |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) 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
Feb – Apr
(peak: Mar)
4
Eyepiece View
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.
Acrux
HIP 60718; Alpha1 Crucis
Easy double, sep 3.5″
Double Star
mag 1.33
1.3°
Crux
Alpha Cru
HIP 60718; Alpha2 Crucis
Hot blue O-type star
Star
mag 1.73
1.3°
Crux
NGC 4439
Open cluster
Open Cluster
mag 8.4
1.8°
Crux
NGC 4103
Open cluster
Open Cluster
mag 7.0
2.2°
Crux
NGC 4609
Rich open cluster
Open Cluster
mag 6.9
2.4°
Crux
NGC 4052
Open cluster
Open Cluster
mag 9.0
2.9°
Crux
Coalsack Nebula
Dark nebula — shows as a void against the Milky Way
Dark Nebula
mag 12.0
3.0°
Crux
S Cru
Pulsating variable, period 4.7d
Variable Star
mag 6.58
5.1°
Crux
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