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IC 4578 — Galaxy in Apus

Galaxy Fair (39/100)

Barred Spiral

Magnitude 13.1m Galaxy Apus (Aps) Visible
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1Properties

Magnitude 13.08
Angular Size 1.6′ × 0.6′
Position Angle 139°
Distance 219.65 million ly
Galaxy Type Barred Spiral (SBb)
eF, eS, cE 140deg , bet 2 vF st

Position & Identifiers

RA 15h 53m 12.0s
Dec -74° 49' 60.0"
Constellation Apus (Aps)
Catalog IC 4578

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. V. hard+ V. hard V. hard
150mm Newt. Hard Hard V. hard+
C8 203mm Hard+ Hard Hard
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 Apr – Jun (peak: May)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

IC 4578 · 1.6′×0.6′ · N up, E left

5 Best Magnification

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6 Surface Brightness

7 Morphology Decoder

8 Inclination & True Shape

9 Redshift

10 Size Comparator

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11

Light Travel Time Machine

12

Relativistic Travel

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 5833
Hard+
Barred spiral galaxy
Galaxy mag 11.93 3.5° Apus
NGC 6101
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 9.3 3.5° Apus
X TrA
Medium+
Semi-regular variable, range 5.0–6.0
Variable Star mag 5.81 5.6° Triangulum Australe
IC 4654
Hard+
Bright spiral galaxy
Galaxy mag 12.30 6.9° Apus
NGC 5938
Hard+
Barred spiral galaxy
Galaxy mag 11.49 8.1° Triangulum Australe
NGC 6392
Hard+
Bright spiral galaxy
Galaxy mag 12.27 9.7° Apus
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