Zeta Cygni — Star in Cygnus
Observe
1Physical Properties
Magnitude
3.20
Spectral Type
G8+ IIIa Ba0.5
Star Color
Orange
(B-V 0.99)
Distance
143 ly
2Position & Identifiers
RA
21h 12m 56.2s
Dec
+30° 13' 37.0"
Constellation
Cygnus
(Cyg)
HR
8115
HIP
104732
HD
202109
Bayer
Zeta
Flamsteed
64 Cyg
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Easy | 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)
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
White dwarf companion.
15
Light Travel Time Machine
16
Relativistic Travel
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.
V389 Cyg
Easy double, sep 3.3″
Double Star
mag 5.59
0.9°
Cygnus
DT Cyg
Pulsating variable, period 2.5d
Variable Star
mag 5.82
1.7°
Cygnus
NGC 7013
Bright spiral galaxy
Galaxy
mag 12.0
2.0°
Cygnus
East Veil Nebula
NGC 6992
Supernova remnant
Supernova Remnant
mag 7.0
3.9°
Cygnus
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