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Name
  NSVS 8504923  
AAVSO UID
000-BLW-437 (No observations)  
Constellation
Cygnus Sequence
J2000.0
20 25 03.70 +37 13 40.7  (306.26542 +37.22798) Search nearby
B1950.0 20 23 10.91 +37 03 51.2
Galactic coord. 75.985 -0.323
Other names

(Internal only)
2MASS J20250369+3713406 IPHAS J202503.70+371340.6 IRAS 20231+3703
MSX6C G075.9845-00.3230 NSVS 5733838 URAT1 637-438258
USNO-B1.0 1272-0511162 ZTF J202503.71+371340.6  
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Variability type
M
Spectral type S6/2
Mag. range
16.906 (2.789) r
Discoverer Ivan Sergey,Sebastian Otero, Dubrovski Sergei, Astrobloknot Team
Epoch
20 May 2018 (HJD 2458258.895) Ephemeris
Outburst --
Period 390 d
Rise/eclipse dur. --
Remarks
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1 2020arXiv200508662C Epoch of minimum given. g-band period= 391.5233630 d. r-band period= 444.8899607 d.
2 Sergey, Ivan J-K= 2.33. NSVS magnitudes contaminated by GSC 02697-00556 V= 12.0 (sep. 19"). Range has been corrected.
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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 = 6.83H = 5.33K = 4.50J - K = 2.33
AllWISE W1 = 4.02W2 = 3.61W3 = 3.00W4 = 2.32W1 - W2 = 0.41W3 - W4 = 0.68
Images
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Supporting Documents
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1 Phase Plot Sergey, Ivan 2016-02-26 16:30 UTC
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Revision History
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2 Otero, Sebastian Alberto 2021-10-26 01:05 UTC Update from 2020arXiv200508662C. Gaia EDR3 position.
1 Sergey, Ivan 2016-02-26 21:17 UTC Initial submission.

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