59 Cyg
HIP 103632; 59 Cyg
DoubleStar
Cyg
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.74
Range
4.49 - 5.07
Period
28.2 days
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.
Light Curve
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 Fusion
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…