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Details for Revision 3
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Name
  V2647 Cyg  
AAVSO UID
000-BJX-184 (2663 observations)  
Constellation
Cygnus Sequence
J2000.0
21 47 03.30 +50 03 17.8  (326.76375 +50.05494) Search nearby
B1950.0 21 45 13.39 +49 49 21.7
Galactic coord. 95.344 -2.675
Other names

(Internal only)
1SWASP J214703.29+500317.8 2MASS J21470330+5003177 GSC 03612-01565
TYC 3612-1565-1 USNO-A2.0 1350-14941873  
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Variability type
EA
Spectral type --
Mag. range
11.05 - 11.7 V
Discoverer --
Epoch
08 Sep 2007 (HJD 2454352.425) Ephemeris
Outburst --
Period 5.85527 d
Rise/eclipse dur. 3%  (4.2 h)
Remarks
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1 Otero, Sebastian Alberto Min II= 11.51 V. ASAS-SN magnitudes partially contaminated by 2MASS J21470255+5003238 (V= 13.8; sep. 10"). Range has been corrected.
2 Wils, Patrick Not an eccentric orbit. Min II = 11.5.
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References
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1 Kozyreva, V. S.; Kusakin, A. V.; Bogomazov, A. I.; et al., 2019, IBVS #6269 2019IBVS.6269....1K
2 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
3 Bob Nelson's O-C files, 2016 --
4 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2013, IBVS 6052		 2013IBVS.6052....1K
5 E.V. Kazarovets, N.N. Samus, O.V. Durlevich, N.N. Kireeva, E.N. Pastukhova,
2013, IBVS 6052		 2013IBVS.6052....1K
6 A.J. Norton et al., 2007, A&A 467, 785 (SuperWASP data) 2007A&A...467..785N
7 Otero, S., Wils, P., Hoogeveen, G., and Dubovsky, P. 2006, IBVS, No. 5681 2006IBVS.5681....1O
8 S.A.Otero, P.Wils, G.Hoogeveen, P.A.Dubovsky, IBVS N5681, 2006. 2006IBVS.5681....1O
External Links
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Supporting Documents
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1 Phase plot Wils, Patrick 2010-10-28 02:22 UTC Light curve based on SuperWASP (5-point averages) and NSVS data.
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Revision History
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4 Otero, Sebastian Alberto 2020-03-25 00:23 UTC Period, epoch and spectral type from 2019IBVS.6269....1K. Range from ASAS-SN data.
3 Admin, VSX 2013-04-16 00:55 UTC Update from [2013IBVS.6052....1K].
2 Wils, Patrick 2010-10-28 02:22 UTC Updated period based on SuperWASP data. The epoch and period also fit the two minima given in OEJV #74: HJD 2453817.64371 (primary minimum) and 2453905.47340 (secondary).
1 Admin, VSX 2007-03-23 19:54 UTC Preserved original object data.

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