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IC 1815 — Galaxy in Triangulum

Galaxy Fair (25/100)

Lenticular

Magnitude 14.0m Galaxy Triangulum (Tri) Visible
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1Properties

Magnitude 14.0
Angular Size 1.4′ × 1.2′
Position Angle 123°
Distance 219.04 million ly
Galaxy Type Lenticular (S0)
F, S, R, gbMN

Position & Identifiers

RA 02h 34m 18.0s
Dec +32° 25' 60.0"
Constellation Triangulum (Tri)
Catalog IC 1815

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 V. hard+ V. hard+
C8 203mm Hard 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 Sep – Nov (peak: Oct)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

IC 1815 · 1.4′×1.2′ · 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

Discover

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 1060
Hard+
Elliptical galaxy
Galaxy mag 13.0 1.9° Triangulum
NGC 890
Medium
Elliptical galaxy
Galaxy mag 12.0 2.7° Triangulum
NGC 972
Medium
Bright spiral galaxy
Galaxy mag 11.3 3.1° Aries
NGC 855
Hard+
Elliptical galaxy
Galaxy mag 13.0 6.3° Triangulum
Gorgonea Tertia
HIP 14354; Rho Persei; 25 Persei
Medium
Semi-regular variable, range 3.3–4.0
Variable Star mag 3.39 9.0° Perseus
NGC 752
Easy
Scattered bright open cluster
Open Cluster mag 5.7 9.2° Andromeda
Show on Map

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