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Name
  W Lac  
AAVSO UID
000-BCP-998 (1776 observations)  
Constellation
Lacerta Sequence
J2000.0
22 07 29.82 +37 44 07.1  (331.87425 +37.73531) Search nearby
B1950.0 22 05 20.60 +37 29 25.8
Proper motion
RA: -5.9 +/- 2.0 mas/yDec: -6.6 +/- 3.2 mas/ySource: UCAC4
Galactic coord. 90.519 -14.611
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2203+37 AN 163.1904 IRC +40503
NSVS J2207301+374409    
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Variability type
M
Spectral type M7e-M8e
Mag. range
10.3 - <15.0 p
Discoverer L. Ceraski
Epoch
09 Nov 1966 (HJD 2439439.0) Ephemeris
Outburst --
Period 328.5 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team P var. Max = 2415255 + 323d*E (JD2414600 - 15300); Max = 2425628 + 335.5d*E (JD2425600 - 38000) [R.Prager, GuL 2, 1936.]; Max = 2433844 + 324.5d*E (JD2428000 - 33850); since JD2433850 - see Table.
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References
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1 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
2 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1974ApJS...28..271K
3 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
4 W.Ceraski, Mosc Ann (2), 5, Kartenserie 2, 1909. --
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 = 3.87H = 3.05K = 2.54J - K = 1.33
AllWISE W3 = 1.11W4 = 0.59W3 - W4 = 0.53
APASS-DR9 B = 13.65V = 12.03g' = 12.94r' = 11.34B - V = 1.62
Images
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Supporting Documents
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Campaigns/Programs
 LPV Humps
Revision History
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3 Billiaert, Bruno 2015-12-29 09:46 UTC discoverer added
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.