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NGC 6643 — Galaxy in Draco

Galaxy Good (50/100)

Spiral

Magnitude 11.1m Galaxy Draco (Dra) Visible
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1Properties

Magnitude 11.1
Angular Size 3.3′ × 1.6′
Position Angle 37°
Distance 69.38 million ly
Galaxy Type Spiral (Sc)
pB, pL, E 50deg , 2 st p

Position & Identifiers

RA 18h 19m 48.0s
Dec +74° 34' 00.0"
Constellation Draco (Dra)
Catalog NGC 6643

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 May – Jul (peak: Jun)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 6643 · 3.3′×1.6′ · 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

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