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Name
  T Cen  
AAVSO UID
000-BBT-848 (30566 observations)  
Constellation
Centaurus Sequence
J2000.0
13 41 45.56 -33 35 50.6  (205.43983 -33.59739) Search nearby
B1950.0 13 38 53.22 -33 20 43.0
Proper motion
RA: -27.819 +/- 0.033 mas/yDec: 3.434 +/- 0.031 mas/ySource: Gaia DR1
Galactic coord. 314.802 +28.112
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J13414557-3335505 AAVSO 1336-33 ASAS J134146-3335.8
CD-32 9549 CPD-32 3458 HD 119090
HIP 66825 HR 5147 RAFGL 4909S
SAO 204739    
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Variability type
RVA
Spectral type K0:e-M4II:e
Mag. range
5.56 - 8.44 V
Discoverer E.E. Markwick (1894) and W. Fleming (1895)
Epoch
08 Jun 2005 (HJD 2453530.0) Ephemeris
Outburst --
Period 181.4 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 0.92. The light curve shape is more typical of an RVA variable most of the time. The early spectral type at maximum and short period are consistent with that. Minima interchange happens a lot but that is also common in other RV-type stars like U Mon. In 1954 Bidelman and Ratcliffe already published: "self-reversal of the hydrogen emission lines has been previously found in two high-velocity [SRD] stars, AG Aur and WY And and also in the peculiar cepheid W Vir. The structure of the H-delta line in W Vir at some phases is quite similar to that found in T Cen at H-alpha. Since the light curve of T Cen shows marked variations in the depth of minimum, and since its mean visual range is quite small, about 2.1 mag., it seems that this variable is in several respects more similar to other types of variable stars than to typical Mira-type stars of longer period"
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References
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1 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
2 Bidelman, W. P. and Ratcliffe, A. E., 1954, Reversal of the Bright Hα
Line in the Spectrum of T Centauri
1954PASP...66..255B
3 E.C. Pickering, 1895, Harvard College Observatory Circular 4, 1 1896HarCi...4....1P
4 E.E. Markwick, 1895, AN 138, 213 1895AN....138..213M
5 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 = 3.23H = 2.55K = 2.31J - K = 0.92
AllWISE W3 = 1.56W4 = 1.26W3 - W4 = 0.30
Images
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Supporting Documents
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2 Phase plot Otero, Sebastian Alberto 2011-12-16 01:43 UTC Phase plot with data from the literature.
1 Light curve Otero, Sebastian Alberto 2011-12-16 01:41 UTC Portion of T Cen's recent light curve showing RVA behaviour.
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Campaigns/Programs
 Binocular program
 Legacy LPV Program
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Admin, VSX 2012-12-27 19:42 UTC Update from [1895AN....138..213M].
4 Otero, Sebastian Alberto 2011-12-16 01:41 UTC Type, period, epoch and range based on the available information and photometry.
3 Otero, Sebastian Alberto 2011-08-19 14:21 UTC Period and epoch from ASAS-3 data.
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.