SkyLabs

Blue Planetary (NGC3918)
Nebula 057 / 100

Blue Planetary

NGC3918

At a glance

Type
Planetary nebula
Constellation
Cen
Right ascension
11h 50m 18.0s
Declination
−57° 11′
Apparent magnitude
8.1
Angular size
0.3x0.3′
Catalogue
NGC3918

Located in Centaurus.

The outline on your card

A small, intense blue-green disc with a smooth ring-like shell.

Outline class
Ring
Axis ratio
1.00 : 1
Central source
Single central star
Surface brightness
High
Recorded structure
Shell · Cavity · Inner ring

The card front carries no text by design: the glyph is drawn from this object's own silhouette, so the outline is the only clue you get until you scan it.

What did you just see?

Editorial description pending.

Find it in the sky

Observation guide pending.

Go deeper

Story pending.

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