BH Canum Venaticorum — Star in Canes Venatici
Observe
1Physical Properties
Magnitude
4.98
Range
4.94 - 5.01
Period
2.6 days
Variable Type
RS CVn (Chromospherically Active)
Spectral Type
F2IV
subgiant
Star Color
Yellow-white
(B-V 0.40)
Distance
148 ly
2Position & Identifiers
RA
13h 34m 47.8s
Dec
+37° 10' 57.0"
Constellation
Canes Venatici
(CVn)
HR
5110
HIP
66257
HD
118216
SAO
63623
Variable ID
BH CVn
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Medium | 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
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Best season
Mar – May
(peak: Apr)
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6
Size Comparison
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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
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14Stellar Notes
RS 4.94 - 5.01V, 2.6131738d. Probable reflection effect.
2.6132d, K 9.5k/s, V0 +6.4k/s, asini 0.341. Eker and Doherty (1987, MNRAS, 228, 869) observed double lines at high | resolution and provide and alternate orbit. A primary temperature of 6750 K is estimated from Fe/C line ratio, while | equivalent widths of CaI and FeI lines from K-type secondary give 4500-5000 K. Implied spectral type of secondary is | K2IV.
15
Light Travel Time Machine
16
Relativistic Travel
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Visibility scores assume a 150 mm Newton at Bortle 4.
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Article
Canes Venatici
Mythology, bright stars, and deep-sky highlights.
Constellation
