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Name
Y Cyg
AAVSO UID
Constellation
J2000.0
B1950.0
20 50 03.65 +34 28 07.0
Galactic coord.
77.251 -6.226
Other names(Internal only)
AAVSO 2048+34
BD+34 4184
HD 198846
HIP 102999
SAO 70599
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Variability type
EA/DM
Spectral type
B0IV+B0IV
Mag. range
7.3 - 7.9 V
Discoverer
Seth Chandler (1886)
Epoch
Outburst
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Period
2.9963328 d
Rise/eclipse dur.
10% (7.191 h)
Remarks
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1
Otero, Sebastian Alberto
Eccentric system. Min II at phase 0.57-0.60. Elements= HJD 2458645.838 + 2.99636 x E.
2
GCVS Team
Min II 7.75; E = 0.1458. Apsidal motion: P = 47.6 yr. There are sinusoidal terms in the elements: +0.1391d*sin(0.06256deg*E) - 0.0076d*sin(2*(0.06256deg*E)); Min II = 2409454.9174 + 2.9963328d*E - 0.1391d*sin(0.06256deg*E) - 0.0076d*sin(2*(0.06256deg*E)).
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References
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1
Bob Nelson's O-C files, 2016
--
2
D.J.K.O'Connell, Ric Astr 8, N29, 1977.
1977RA......8..543O
3
V.P.Zessewitsch, Variable Stars and Methods of Their Studies, (in russian)
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4
Sternberg, B., 1927, Messungen von veranderlichen Sternen in der Jahren
1927PAICU...7D...1S
5
Cannon, A. J., 1907, Second catalogue of variable stars
1907AnHar..55....1C
External Links
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Location
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AAVSO Variable Star Plotter
AAVSO Light Curve
AAVSO WebObs
APASS
AAVSOnet EPD
SIMBAD
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VizieR Search
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NSVS
CRTS
ZTF
SuperWASP
Pan-STARRS1 Data
Pan-STARRS1 Images
SkyMorph
Kamogata Wide-field Survey (KWS)
O-C Gateway (name)
O-C Gateway (coords)
Atlas of O-C Diagrams
Lichtenknecker Database
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Supporting Documents
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Revision History
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