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  R Lac  
000-BCQ-661 (6866 observations)  
Lacerta Sequence
22 43 15.64 +42 22 11.2  (340.81517 +42.36978) Search nearby
B1950.0 22 41 02.17 +42 06 26.4
Proper motion
RA: -7.7 +/- 4.8 mas/yDec: -4.0 +/- 2.5 mas/ySource: UCAC4
Galactic coord. 99.050 -14.481
Other names

(Internal only)
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AAVSO 2238+41 ADS 16217 A BD+41 4589
HD 215254 NSVS J2243153+422207 SAO 52298
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Variability type
Spectral type M5e-M8.5e
Mag. range
8.5 - 14.8 V
Discoverer --
27 Jul 1972 (HJD 2441526) Ephemeris
Outburst --
Period 299.86 d
Rise/eclipse dur. 41%
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1 GCVS Team VB A (B 14.1m, 6", 50deg).
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1 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
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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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 = 5.17H = 4.43K = 4.00J - K = 1.17
AllWISE W1 = 3.20W3 = 1.86W4 = 1.42W3 - W4 = 0.44
APASS-DR9 B = 13.09V = 11.55g' = 13.71r' = 11.79i' = 10.01B - V = 1.54
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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 LPV Program
Revision History
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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.