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Name
  V1320 Cyg  
AAVSO UID
000-BDP-206 (4 observations)  
Constellation
Cygnus Sequence
J2000.0
20 21 22.05 +39 19 57.9  (305.34189 +39.33276) Search nearby
B1950.0 20 19 33.00 +39 10 21.0
Proper motion
RA: -2.1 +/- 7.9 mas/yDec: 8.8 +/- 7.5 mas/ySource: UCAC4
Galactic coord. 77.295 +1.477
Other names

(Internal only)
2MASS J20212204+3919579 ASASSN-V J202122.06+391957.9 GR 145
UCAC4 647-087847 USNO-B1.0 1293-0413119  
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Variability type
EA/DS:
Spectral type --
Mag. range
15.2 V (>2.5)p
Discoverer --
Epoch
25 Jul 1960 (HJD 2437140.5) Ephemeris
Outburst --
Period 40.9 d
Rise/eclipse dur. 5%  (2 d)
Remarks
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1 Otero, Sebastian Alberto VSP Note: 17.1 mag. star 5.5" to the SE.
2 Otero, Sebastian Alberto J-K= 1.32; B-V= 1.30. APASS magnitudes contaminated by 2MASS J20212238+3919539 (V= 17.1; J-K= 0.99; sep. 5.5"). Magnitude has been corrected.
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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 Henden, A. A.; et al., 2012, Data Release 3 of the AAVSO All-Sky
Photometric Survey (APASS)		 2012JAVSO..40..430H
3 G.Romano, Padova Publ N156, 1969. --
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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 = 11.32H = 10.37K = 10.02J - K = 1.30
AllWISE W1 = 9.68W2 = 9.73W3 = 10.16W1 - W2 = -0.05
APASS-DR9 B = 16.37V = 15.07g' = 15.71r' = 14.39i' = 13.55B - V = 1.30
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2020-05-15 00:48 UTC Gaia DR2 position.
3 Otero, Sebastian Alberto 2016-01-15 23:39 UTC Maximum magnitude from APASS, UCAC3 and CMC15. UCAC4 position.
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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