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NGC 6109 — Galaxy in Corona Borealis

Galaxy Fair (25/100)

Elliptical

Magnitude 15.0m Galaxy Corona Borealis (CrB) Visible
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1Properties

Magnitude 15.0
Angular Size 1.0′ × 1.0′
Position Angle 85°
Distance 416.40 million ly
Galaxy Type Elliptical (E)
F, S, R, gbM

Position & Identifiers

RA 16h 17m 42.0s
Dec +35° 00' 00.0"
Constellation Corona Borealis (CrB)
Catalog NGC 6109

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. V. hard+ V. hard+ V. hard
C8 203mm Hard V. hard+ V. 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 6109 · 1.0′×1.0′ · 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.

Sigma CrB
HIP 79607; Sigma Coronae Borealis; 17 Coronae Borealis
Easy
Easy double, sep 7.4″
Double Star mag 5.64 1.3° Corona Borealis
NGC 6166
Medium
Elliptical galaxy
Galaxy mag 12.0 5.0° Hercules
M13
Great Hercules Cluster
Easy
Large bright globular cluster
Globular Cluster mag 5.8 5.1° Hercules
NGC 6207
Medium
Bright spiral galaxy
Galaxy mag 11.6 5.5° Hercules
30 Her
Easy
Mira-type variable, range 4.3–6.3
Variable Star mag 5.04 7.2° Hercules
NGC 6239
Hard+
Barred spiral galaxy
Galaxy mag 12.3 10.0° Hercules
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