59 Cyg
HIP 103632; 59 Cyg
DoubleStar
Cyg
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.74
Variable Type
Gamma Cassiopeiae (Eruptive Be Star)
Spectral Type
B1ne
Star Color
Blue-white
(B-V -0.05)
Position & Identifiers
RA
20h 59m 49.6s
Dec
+47° 31' 16.0"
Constellation
Cyg
HR
8047
HIP
103632
Flamsteed
59 Cyg
Variable ID
V832 Cyg
Double Cat
14526
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System
Components
4
Component IDs
AB
Separation
21.0″
Companion Mag
9.4
Position Angle
353°
Star Colors
A: Blue-white
B: Yellow-white
Discoverer
STF2743
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 21.0″ · PA: 353° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
ADS 14526A, Gamma Cas 4.49 - 4.88V. Expanding circumstellar shell. Marked evidence of mass loss. Shell spectrum faded | between 1973 and 1975. Metallic absorption lines disappeared.
AB CPM. B, 9.38V, +0.22(B-V), +0.04(U-B) A8III, vsini 97k/s. Component C, 12v at 26" optical.
Cyg OB7.
Ultraviolet envelope. Variously classified O9V, B0p, B1IV:e, B1.5Venn, B3ne. Component B, A3V.
Survey Image
Loading survey image…