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Gamma Columbae — Star in Columba

Magnitude 4.4m Star Columba (Col) Visible
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1Physical Properties

Magnitude 4.36
Spectral Type B2.5IV subgiant
Star Color Blue (B-V -0.18)

2Position & Identifiers

RA 05h 57m 32.2s
Dec -35° 16' 60.0"
Constellation Columba (Col)
HR 2106
HIP 28199
HD 40494
SAO 196352
Bayer Gamma
SIMBAD

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium+ Medium+ Medium
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Nov – Jan (peak: Dec)

5Survey Image

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Explore

7

Size Comparison

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8

Compare Stars

9

Spectral Classification

10

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
11

Stellar Lifecycle

12

Blackbody Spectrum

13

Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

14

Stellar Fusion

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 2090
Medium
Bright spiral galaxy
Galaxy mag 12.0 2.4° Columba
Mu Col
Easy
Hot blue O-type star
Star mag 5.17 3.8° Columba
HIP 30840
Hard+
Tight double — a rewarding split at 1.2″
Double Star mag 5.74 7.1° Canis Major
NGC 2243
Easy
Open cluster
Open Cluster mag 9.4 7.8° Canis Major
C73
NGC 1851
Easy
Globular cluster — dense ball of ancient stars
Globular Cluster mag 7.3 9.8° Columba
Show on Map

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