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Name
  NSVS 8494851  
AAVSO UID
000-BLW-859 (No observations)  
Constellation
Cygnus Sequence
J2000.0
20 18 39.57 +30 33 50.2  (304.66488 +30.56394) Search nearby
B1950.0 20 16 38.35 +30 24 23.9
Proper motion
RA: -13.9 +/- 9.3 mas/yDec: -3.0 +/- 9.0 mas/ySource: UCAC4
Galactic coord. 69.747 -3.026
Other names

(Internal only)
2MASS J20183958+3033501 ASASSN-V J201839.55+303350.1 MSX6C G069.7469-03.0273
NSVS 8545300 UCAC4 603-110529 URAT1 603-508696
USNO-B1.0 1205-0488000 ZTF J201839.57+303350.1  
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Variability type
M
Spectral type --
Mag. range
15.058 (1.963) r
Discoverer Ivan Sergey, Dubrovski Sergei, Astrobloknot Team
Epoch
05 May 2019 (HJD 2458608.8463) Ephemeris
Outburst --
Period 177.3848012 d
Rise/eclipse dur. --
Remarks
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1 2020arXiv200508662C Epoch of minimum given.
2 Sergey, Ivan J-K= 1.68
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References
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1 ZTF Catalog of Periodic Variable Stars (online data) 2020arXiv200508662C
2 Chen, X.; et al., 2020, The Zwicky Transient Facility Catalog of Periodic
Variable Stars		 2020arXiv200508662C
3 Northern Sky Variability Survey, Wozniak, P.R., et al., 2004 2004AJ....127.2436W
External Links
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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 = 9.44H = 8.24K = 7.75J - K = 1.69
AllWISE W1 = 7.50W2 = 7.22W3 = 6.62W4 = 6.06W1 - W2 = 0.28W3 - W4 = 0.56
SDSS-DR12 u = 19.97g = 18.95r = 16.22i = 16.71z = 12.21u - g = 1.02r - i = -0.49
Images
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Supporting Documents
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1 Photometric curve Sergey, Ivan 2016-03-10 00:57 UTC
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Revision History
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2 Otero, Sebastian Alberto 2021-10-26 01:25 UTC Update from 2020arXiv200508662C. Gaia EDR3 position.
1 Sergey, Ivan 2016-03-10 01:36 UTC Initial submission.

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