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Name
  V1907 Cyg  
AAVSO UID
000-BDP-664 (336 observations)  
Constellation
Cygnus Sequence
J2000.0
21 31 14.68 +39 26 59.4  (322.81117 +39.44983) Search nearby
B1950.0 21 29 14.25 +39 13 43.6
Galactic coord. 86.143 -8.718
Other names

(Internal only)
2MASS J21311470+3926592 ASASSN-V J213114.67+392659.8 SVS 2369
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Variability type
M
Spectral type --
Mag. range
12.4 - <18.1 V
Discoverer --
Epoch
19 Sep 1978 (HJD 2443771.0) Ephemeris
Outburst --
Period 254.6 d
Rise/eclipse dur. 38%  (97 d)
Remarks
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1 Karlsson, Thomas B-V= 1.62, V-R= 2.00 from SAAF data.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
2 S.A.Rakhmatov, Manuscript,1986. 1988PZ.....22..767R
3 V.Satyvoldiev, Perem Zvyozdy Prilozhenie 3,No.18,601,1979. 1979PZP.....3..601S
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 = 9.24H = 8.44K = 7.93J - K = 1.32
AllWISE W1 = 7.29W2 = 6.82W3 = 5.99W4 = 5.04W1 - W2 = 0.47W3 - W4 = 0.95
APASS-DR9 i' = 11.34
Images
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Supporting Documents
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2 Phase plot Karlsson, Thomas 2017-09-25 15:43 UTC Phase diagram with maxima from 1988PZ.....22..767R and data from SAAF and ASAS-SN.
1 O-C diagram Karlsson, Thomas 2017-09-25 15:35 UTC O-C diagram with maxima from 1988PZ.....22..767R and data from SAAF and ASAS-SN.
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Revision History
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5 Karlsson, Thomas 2017-09-25 15:35 UTC Range and rise duration from SAAF data and ASAS-SN data. Elements from 1988PZ.....22..767R, SAAF data and ASAS-SN data.
4 Admin, VSX 2010-01-14 01:59 UTC Update from [1988PZ.....22..767R].
3 Admin, VSX 2005-12-18 01:33 UTC Initial upload.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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