33 Cygni — Star in Cygnus
Observe
1Physical Properties
Magnitude
4.30
Variable Type
Delta Scuti (Pulsating)
Spectral Type
A3IV-Vn
subgiant
Star Color
White
(B-V 0.11)
Distance
155 ly
2Position & Identifiers
RA
20h 13m 23.9s
Dec
+56° 34' 04.0"
Constellation
Cygnus
(Cyg)
HR
7740
HIP
99655
HD
192696
SAO
32378
Flamsteed
33 Cyg
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | 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
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Best season
Jun – Aug
(peak: Jul)
5Survey Image
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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
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15Stellar Notes
Delta Sct?
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
Cygnus
Mythology, bright stars, and deep-sky highlights.
Constellation
