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NGC 6239 — Galaxy in Hercules

Galaxy Good (43/100)

Barred Spiral

Magnitude 12.3m Galaxy Hercules (Her) Visible
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1Properties

Magnitude 12.3
Angular Size 2.3′ × 1.1′
Position Angle 113°
Distance 43.57 million ly
Galaxy Type Barred Spiral (SBb)
vF, E, biN np sf

Position & Identifiers

RA 16h 50m 06.0s
Dec +42° 43' 60.0"
Constellation Hercules (Her)
Catalog NGC 6239

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. Hard V. hard+ V. hard
150mm Newt. Medium Hard+ Hard
C8 203mm Medium Medium 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

NGC 6239 · 2.3′×1.1′ · N up, E left

5 Best Magnification

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6 Surface Brightness

7 Morphology Decoder

8 Inclination & True Shape

9 Redshift

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