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Name
X Cyg
AAVSO UID
Constellation
J2000.0
B1950.0
20 41 26.67 +35 24 24.0
Proper motion
RA: -6.898 +/- 0.035 mas/y Dec: -4.769 +/- 0.038 mas/y Source: Gaia DR1
Galactic coord.
76.870 -4.263
Other names(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2039+35
ASASSN-V J204323.91+353700.2
ASASSN-V J204324.30+353515.4
BD+35 4234
HD 197572
HIP 102276
HR 7932
SAO 70423
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Variability type
DCEP
Spectral type
F7Ib-G8Ib
Mag. range
5.85 - 6.91 V
Discoverer
Seth Chandler (1886)
Epoch
Outburst
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Period
16.386332 d
Rise/eclipse dur.
35% (5.7352 d)
Remarks
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1
GCVS Team
P var. Max = 2410190.86 + 16.3841d*E (JD2410100 - 23370) [J.Hellerich, AN 215, 289, 1922. ]; since JD2417000 - see Table. There is a square term in the elements given in the Table: +1.01d*10**(-7)*E**2. [A/H] = 0.4.
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References
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1
T. Jayasinghe, K. Z. Stanek, C. Kochanek, et al., 2019 (in preparation)
--
2
L.Szabados, Bud Mitt N77, 1981.
1981CoKon..77....1S
3
Sky and Tel 38, 202, 1969.
--
4
Cannon, A. J., 1907, Second catalogue of variable stars
1907AnHar..55....1C
External Links
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Location
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service . These data may not be complete.
2MASS
J = 4.54 H = 4.06 K = 3.97 J - K = 0.57
AllWISE
W1 = 3.66 W2 = 3.29 W3 = 3.60 W4 = 3.50 W1 - W2 = 0.36 W3 - W4 = 0.09
APASS-DR9
B = 8.18 V = 6.85 g' = 7.43 r' = 6.76 i' = 6.01 B - V = 1.33
Images
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Supporting Documents
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Revision History
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