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Name
  NSV 25285  
AAVSO UID
--  
Constellation
Cygnus Sequence
J2000.0
20 42 24.60 +42 18 05.0  (310.60250 +42.30139) Search nearby
B1950.0 20 40 37.05 +42 07 15.7
Galactic coord. 82.043 +0.027
Other names

(Internal only)
SVS 2271    
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Variability type --
Spectral type --
Mag. range
14.7 - 16.0 P
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Admin, VSX VB A (B 17.1mpg, 12", 149deg, 1993).
2 2005IBVS.5586....1O Min II = 14.2:R1.
3 GCVS Team B-V ~ 1.3. VB. The co-ordinates refer to the bright component on DSS chart.
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References
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1 Qian, S.-B.; Zhu, L.-Y.; Liu, L.; et al., 2020, Contact binaries at
different evolutionary stages		 2020RAA....20..163Q
2 ZTF Catalog of Periodic Variable Stars (online data) 2020arXiv200508662C
3 Chen, X.; et al., 2020, The Zwicky Transient Facility Catalog of Periodic
Variable Stars		 2020arXiv200508662C
4 Bob Nelson's O-C files, 2016 --
5 K. Honková; J. Jurysek; M. Lehký; et al., 2013, OEJV #160 2013OEJV..160....1H
6 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2008, IBVS 5863		 2008IBVS.5863....1K
7 S.A.Otero, P.Wils, P.A.Dubovsky, IBVS N5586, 2005. 2005IBVS.5586....1O
8 L.K.Erastova, M.K.Tsvetkov, Perem Zvyozdy 21, No.1, 79, 1978. 1978PZ.....21...79E
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Supporting Documents
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Revision History
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6 Otero, Sebastian Alberto 2023-04-23 16:00 UTC Spectral type from 2020RAA....20..163Q.
5 Otero, Sebastian Alberto 2021-10-26 02:13 UTC Update from 2020arXiv200508662C. Gaia EDR3 position.
4 Otero, Sebastian Alberto 2016-06-30 00:27 UTC Update from [2013OEJV..160....1H].
3 Admin, VSX 2008-12-03 03:37 UTC Primary name changed to GCVS designation [2008IBVS.5863....1K]
2 Admin, VSX 2007-03-23 19:55 UTC Update from [2005IBVS.5586....1O].
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.

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