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Latest Details
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Name
  V1812 Cyg  
AAVSO UID
000-BDP-587 (207 observations)  
Constellation
Cygnus Sequence
J2000.0
21 30 40.69 +38 51 02.3  (322.66955 +38.85064) Search nearby
B1950.0 21 28 39.71 +38 37 48.5
Proper motion
RA: -10.8 +/- 2.1 mas/yDec: -9.2 +/- 2.1 mas/ySource: UCAC4
Galactic coord. 85.644 -9.075
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
ASASSN-V J213040.68+385102.7 NSV 13757 NSVS 5915059
NSVS 8716485 SV* R 121  
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Variability type
M
Spectral type --
Mag. range
10.3 - 17.2 V
Discoverer --
Epoch
09 Oct 1999 (HJD 2451461.0) Ephemeris
Outburst --
Period 341.9 d
Rise/eclipse dur. 32%  (109 d)
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties		 2018A&A...616A...1G
2 Wozniak, P. R.; et al., 2004, Northern Sky Variability Survey: Public Data
Release		 2004AJ....127.2436W
3 V.Satyvoldiev, Perem Zvyozdy Prilozhenie 4,No.20,154,1982. 1982PZP.....4..154S
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 = 6.04H = 5.13K = 4.71J - K = 1.33
AllWISE W1 = 4.36W2 = 3.99W3 = 3.50W4 = 3.07W1 - W2 = 0.38W3 - W4 = 0.43
APASS-DR9 B = 16.25V = 13.96g' = 15.38r' = 12.72i' = 10.58B - V = 2.28
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 21 30 40.69 +38 51 02.3 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 Phase plot Karlsson, Thomas 2017-08-18 21:20 UTC Phase plot with V-band data from AAVSO and data from NSVS shifted +1.5 mag.
1 O-C diagram Karlsson, Thomas 2017-08-17 22:06 UTC O-C diagram with maxima from NSVS and AAVSO.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2020-05-15 00:51 UTC Gaia DR2 position.
3 Karlsson, Thomas 2017-08-17 22:06 UTC Position from UCAC4. Range from AAVSO data. Elements and rise duration from NSVS and AAVSO data.
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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