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Name
  UX Cyg  
AAVSO UID
000-BCM-844 (4581 observations)  
Constellation
Cygnus Sequence
J2000.0
20 55 05.50 +30 24 52.0  (313.77292 +30.41444) Search nearby
B1950.0 20 53 00.11 +30 13 21.9
Galactic coord. 74.344 -9.408
Other names

(Internal only)
2MASS J20550551+3024520 AAVSO 2050+30A AN 96.1901
BD+29 4231 DO 19656 HD 199252
IRAS 20529+3013 IRC +30464 RAFGL 2677
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Variability type
M
Spectral type M4e-M6.5e
Mag. range
9 - 16.5: V
Discoverer --
Epoch
30 Jun 1980 (HJD 2444421) Ephemeris
Outburst --
Period 565 d
Rise/eclipse dur. 40%  (226 d)
Remarks
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1 GCVS Team P var. Max = 2432444 + 560.3d*E (JD2415670 - 32450); Max = 2439352 + 578.0d*E (JD2432450 - 40500); since JD2437600 - see Table. Sometimes rapid light decreases on the ascending branch near Max are observed [V.Osvalds, PASP 67, 417, 1955., M.W.Mayall, JRAS Can 50, N3, 135, 1956.]. H2O, OH, SiO maser.
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References
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1 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
2 T. Karlsson, Maxima of Mira stars --
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.		 --
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Supporting Documents
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Revision History
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4 Fernig, Leo 2022-04-22 13:36 UTC Discoverer updated from 1907AnHar..55....1C page 29
3 Otero, Sebastian Alberto 2014-03-04 05:18 UTC Period and minimum magnitude from AAVSO V 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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