VY Ursae Majoris — Variable Star in Ursa Major
Good (58/100)
Observe
1Physical Properties
Magnitude
6.00
Range
5.73 - 6.32
Period
120 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
C5II
Star Color
Deep ruby red
(B-V 2.39)
2Position & Identifiers
RA
10h 45m 04.0s
Dec
+67° 24' 41.0"
Constellation
Ursa Major
(UMa)
HR
4195
HIP
52577
HD
92839
Variable ID
VY UMa
Querying VizieR catalog...
3How easy to follow?
Magnitude
5.9 – 6.5 mag
Amplitude
0.6 mag
Period
120.4 d
Type
SRB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard+ | V. hard | Imp. |
| 50 mm finder 50mm finder | Medium | Medium | Medium |
| 150 mm telescope 150mm scope | Medium | Medium | Medium |
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
Jan – Mar
(peak: Feb)
5Light Curve
6Comparison Stars for VY UMa (5.9–6.5)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
7
Size Comparison
Querying VizieR for stellar data…
8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
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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
Discover
15Stellar Notes
Lb 5.89 - 6.5v.
Technetium found in spectrum.
Survey Image
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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.
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