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IC 1989 — Galaxy in Horologium

Galaxy Fair (25/100)

Elliptical

Magnitude 13.8m Galaxy Horologium (Hor) Visible
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1Properties

Magnitude 13.76
Angular Size 1.4′ × 0.8′
Position Angle 132°
Distance 519.89 million ly
Galaxy Type Elliptical (E-S0)
stell

Position & Identifiers

RA 03h 41m 54.0s
Dec -50° 57' 00.0"
Constellation Horologium (Hor)
Catalog IC 1989

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 Oct – Dec (peak: Nov)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

IC 1989 · 1.4′×0.8′ · 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.

IC 1954
Hard+
Barred spiral galaxy
Galaxy mag 12.0 1.9° Horologium
IC 2000
Medium
Edge-on galaxy
Galaxy mag 12.38 2.4° Horologium
NGC 1433
Hard+
Barred spiral galaxy
Galaxy mag 10.0 3.7° Horologium
NGC 1515
Medium+
Edge-on galaxy
Galaxy mag 11.0 4.6° Dorado
NGC 1261
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 8.4 6.2° Horologium
TW Hor
Hard+
Semi-regular variable, range 5.5–6.0
Variable Star mag 5.74 7.7° Horologium
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