GY Canis Majoris — Star in Canis Major
Observe
1Physical Properties
Magnitude
6.12
Variable Type
Beta Cephei (Pulsating)
Spectral Type
B0.5V
Star Color
Blue
(B-V -0.23)
2Position & Identifiers
RA
07h 13m 36.3s
Dec
-27° 21' 23.0"
Constellation
Canis Major
(CMa)
HR
2734
HIP
34924
HD
55857
SAO
173244
Variable ID
GY CMa
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Hard | Hard | V. hard+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Dec – Feb
(peak: Jan)
5Survey Image
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Explore
6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
Discover
14Stellar Notes
Beta C, amp. 0.04V, 0.112d (variability questioned).
Collinder 121 #32.
Same period.
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.
Explore Nightbase
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Arthur Eddington
1919 eclipse expedition confirming general relativity; first theory of stellar interiors; the Eddington limit
Biography
Canis Major
Mythology, bright stars, and deep-sky highlights.
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The Life of Stars
From birth in a nebula to spectacular death — how stars are born, shine, swell, and die, and how to read the clues in their starlight.
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