Theta Capricorni — Star in Capricornus
Observe
1Physical Properties
Magnitude
4.07
Spectral Type
A1V
Star Color
White
(B-V -0.01)
Distance
192 ly
2Position & Identifiers
RA
21h 05m 56.8s
Dec
-17° 13' 58.0"
Constellation
Capricornus
(Cap)
HR
8075
HIP
104139
HD
200761
SAO
164132
Bayer
Theta
Flamsteed
23 Cap
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Medium+ | Medium |
| 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
Jul – Sep
(peak: Aug)
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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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
840.6d, asini 160.
16
Light Travel Time Machine
17
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.
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Article
Capricornus
Mythology, bright stars, and deep-sky highlights.
Constellation
