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NGC 4051 — Galaxy in Ursa Major

Galaxy Good (59/100)

Spiral

Magnitude 10.3m Galaxy Ursa Major (UMa) Visible
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1Properties

Magnitude 10.3
Angular Size 4.9′ × 4.3′
Position Angle 146°
Distance 30.17 million ly
Galaxy Type Spiral (SABbc)
B, vL, E, vgvsmbM *11

Position & Identifiers

RA 12h 03m 12.0s
Dec +44° 31' 60.0"
Constellation Ursa Major (UMa)
Catalog NGC 4051

2How easy to spot?

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Telescope Bortle 3 Bortle 4 Bortle 5
80mm refr. V. hard V. hard Imp.
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

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 4051 · 4.9′×4.3′ · 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

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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.

NGC 4138
Medium
Bright spiral galaxy
Galaxy mag 12.0 1.4° Canes Venatici
NGC 4111
Easy
Bright spiral galaxy
Galaxy mag 10.8 1.6° Canes Venatici
NGC 4144
Hard+
Edge-on galaxy
Galaxy mag 12.0 2.3° Ursa Major
NGC 4143
Medium
Bright spiral galaxy
Galaxy mag 12.0 2.3° Canes Venatici
La Superba
HIP 62223
Easy
Semi-regular variable, range 4.9–5.9
Variable Star mag 4.99 7.5° Canes Venatici
Show on Map

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