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NGC 4100 — Galaxy in Ursa Major

Galaxy Good (50/100)

Barred Spiral

Magnitude 12.0m Galaxy Ursa Major (UMa) Visible
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1Properties

Magnitude 12.0
Angular Size 4.6′ × 1.3′
Position Angle 167°
Distance 50.04 million ly
Galaxy Type Barred Spiral (Sbc)
pB, vL, vmE 161deg , vgvlbM

Position & Identifiers

RA 12h 06m 08.4s
Dec +49° 34' 57.7"
Constellation Ursa Major (UMa)
Catalog NGC 4100

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

Easy on Seestar S50

3Visibility

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Best season Feb – Apr (peak: Mar)

4 Eyepiece View

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125x TFOV: 0.4° Lim. mag: 13.6
N E

NGC 4100 · 4.6′×1.3′ · 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 4088
Medium+
Bright spiral galaxy
Galaxy mag 10.5 1.0° Ursa Major
NGC 4157
Medium
Edge-on galaxy
Galaxy mag 12.0 1.2° Ursa Major
NGC 4026
Medium
Edge-on galaxy
Galaxy mag 12.0 1.8° Ursa Major
NGC 4096
Medium+
Edge-on galaxy
Galaxy mag 10.6 2.1° Ursa Major
La Superba
HIP 62223
Easy
Semi-regular variable, range 4.9–5.9
Variable Star mag 4.99 7.8° Canes Venatici
M97
Owl Nebula
Hard+
Planetary nebula — try an OIII filter
Planetary Nebula mag 9.9 9.5° Ursa Major
Show on Map

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