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Name
  CT Lac  
AAVSO UID
000-BCW-177 (2064 observations)  
Constellation
Lacerta Sequence
J2000.0
22 06 39.90 +48 27 07.0  (331.66625 +48.45194) Search nearby
B1950.0 22 04 42.09 +48 12 26.9
Galactic coord. 96.882 -5.908
Other names

(Internal only)
AAVSO 2202+47B AN 662.1936 HIP 109158
IRC +50418 RAFGL 5670S  
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Variability type
SRA
Spectral type C6-,4(R)
Mag. range
10.6 - 17.2 p
Discoverer --
Epoch
07 Jun 1971 (HJD 2441110) Ephemeris
Outburst --
Period 555 d
Rise/eclipse dur. 62%  (344 d)
Remarks
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1 York, Paul F Secondary period 286.3 d
2 Otero, Sebastian Alberto Bumped/doubled-maxima carbon star.
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References
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1 M. R. Templeton; P. Maurer; W. Kriebel; et al., 2014, CT Lacertae: Another
Long-period Carbon Star with Long Timescale Variations?
2014JAVSO..42..260T
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
3 A.Alksnis, MVS 9, H.2, 25, 1981. --
4 A.K.Alksnis, Z.K.Alksne, I.A.Daube, Photometric Studies on Red Stars (in
russian), p.7-114, Riga, 1973.
1973TrRig..15....7A
External Links
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Supporting Documents
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2 Raw light curve Otero, Sebastian Alberto 2011-01-07 03:58 UTC JD light curve showing all the data.
1 CT Lac light curve Otero, Sebastian Alberto 2011-01-07 01:48 UTC Light curve showing AAVSO visual observations, TASS, Hipparcos and NSVS data, all matched to the V-scale (determined from TASS and Vt magnitudes).
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 York, Paul F 2016-08-17 09:39 UTC Type and periods from 2014JAVSO..42..260T. Range from AAVSO data.
4 Otero, Sebastian Alberto 2011-01-07 01:48 UTC New elements and range based on the combination of visual and photometric 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.