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Details for Revision 3
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Name
  T UMi  
AAVSO UID
000-BBT-772 (18564 observations)  
Constellation
Ursa Minor Sequence
J2000.0
13 34 41.05 +73 25 52.9  (203.67104 +73.43136) Search nearby
B1950.0 13 33 37.75 +73 41 11.8
Galactic coord. 118.714 +43.341
Other names

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AAVSO 1332+73 AN 57.1903 HD 118556
IRC +70119 NSVS J1334407+732551  
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Variability type
M
Spectral type M4e-M6e
Mag. range
7.8 - 15 V
Discoverer Mrs. L. Ceraski (February 13, 1902)
Epoch
01 Mar 1984 (HJD 2445761) Ephemeris
Outburst --
Period 301 d
Rise/eclipse dur. 45%  (135 d)
Remarks
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1 Otero, Sebastian Alberto Period decreased from 315 to 230 d. between 1980 and 2008 and then the pulsation mode switched from M to SR with P= 113 d. (2011A&A...531A..88U). Range in 2016 is V= 10.0 - 11.9.
2 GCVS Team P var. Max = 2428332 + 315.48d*E (JD2416500 - 29500); Max = 2436415 + 310.05d*E (JD2429500 - 37200); Max = 2442389 + 315.5d*E (JD2437200 - 43600); since JD2443600 - see Table.
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References
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1 Uttenthaler, S.; van Stiphout, K.; Voet, K.; et al., 2011, The evolutionary
state of Miras with changing pulsation periods
2011A&A...531A..88U
2 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
3 T. Karlsson, Maxima of Mira stars --
4 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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Campaigns/Programs
 LPV Program
 LPV Humps
 Percy's Unusual LPVs
Revision History
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4 Otero, Sebastian Alberto 2016-11-01 15:56 UTC Type from 2011A&A...531A..88U. Period from AAVSO data.
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 van Ballegoij, Erwin J 2007-07-30 12:42 UTC --
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.