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Name
  S Lac  
AAVSO UID
000-BCQ-468 (13091 observations)  
Constellation
Lacerta Sequence
J2000.0
22 29 00.90 +40 18 56.0  (337.25375 +40.31556) Search nearby
B1950.0 22 26 49.25 +40 03 33.6
Galactic coord. 95.589 -14.875
Other names

(Internal only)
AAVSO 2224+39 BD+39 4851 HD 213191
HIP 110972 HV 16 IRC +40512
RAFGL 5691S SAO 52048  
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Variability type
M
Spectral type M4e-M8.2e
Mag. range
7.6 - 13.9 V
Discoverer --
Epoch
22 Oct 1978 (HJD 2443804) Ephemeris
Outburst --
Period 241.5 d
Rise/eclipse dur. 46%  (111 d)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team P var. Max = 2412857 + 238.2d*E (JD2410000 - 16400); Max = 2418828 + 241.45d*E (JD2416400 - 20500); Max = 2427307 + 242.7d*E (JD2420500 - 27300); Max = 2437290 + 237.4d*E (JD2427300 - 37300); since JD2437300 - see Table.
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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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Stellar Association Membership
 ASCC 122 Open Cluster 2012A&A...548A..97Z
Campaigns/Programs
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Fernig, Leo 2022-04-22 13:37 UTC Discoverer updated from 1907AnHar..55....1C page 31
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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