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Name
  LX Cyg  
AAVSO UID
000-BCP-624 (2663 observations)  
Constellation
Cygnus Sequence
J2000.0
21 55 57.03 +48 20 52.5  (328.98762 +48.34792) Search nearby
B1950.0 21 54 02.13 +48 06 35.8
Proper motion
RA: -2.3 +/- 0.9 mas/yDec: -2.3 +/- 0.5 mas/ySource: UCAC4
Galactic coord. 95.396 -4.916
Other names

(Internal only)
2MASS J21555703+4820525 AAVSO 2152+47A AN 348.1929
CSS 1286 GSC 03608-00738 IOMC 3608000087
IRAS 21540+4806 S1* 696 TYC 3608-738-1
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Variability type
M
Spectral type C
Mag. range
9.1 - 15.1 V
Discoverer --
Epoch
07 Dec 1999 (HJD 2451520) Ephemeris
Outburst --
Period 588 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Period increased from 460 d. to 588 d. between 1975 and 1995. Spectral type changed from S to SC and finally to C.
2 Otero, Sebastian Alberto VSP Note: 13.1 mag. star 10" to the S and 15.1 mag. star 13" to the SE.
3 GCVS Team P var. Max = 2432775 + 460.0d*E (JD2415000 - 33300) [N.K.Semakin, Perem. Zvezdy 10, N2, 100, 1955.]; since JD2437900 - see Table. SC 7/9-e - SC 8/8.5e.
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References
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1 Uttenthaler, S.; Meingast, S.; Lebzelter, T.; et al., 2016, LX Cygni: A
carbon star is born
2016A&A...585A.145U
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 N.K.Semakin, Perem. Zvezdy 10, N2, 100, 1955. 1954PZ.....10..100S
4 T. Karlsson, Maxima of Mira stars --
5 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
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Location    Go   
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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 = 5.13H = 3.91K = 2.93J - K = 2.20
AllWISE W3 = 1.56W4 = 1.33W3 - W4 = 0.23
Images
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Supporting Documents
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Campaigns/Programs
 LPV Double Trouble Campaign
 Percy's Unusual LPVs
Revision History
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4 Otero, Sebastian Alberto 2016-11-01 15:04 UTC Spectral type from 2016A&A...585A.145U.
3 Otero, Sebastian Alberto 2014-03-04 21:55 UTC Period, epoch and range from AAVSO data. UCAC4 position.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.