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Name
T Sgr
AAVSO UID
Constellation
J2000.0
B1950.0
19 13 21.36 -17 03 38.0
Proper motion
Galactic coord.
20.324 -13.005
Other names(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J19161443-1658168
AAVSO 1910-17
ASAS J191615-1658.3
ASASSN-V J191614.44-165816.9
BD-17 5546
GSC 06300-00162
HD 180196
HIP 94706
IOMC 6300000038
IRAS 19133-1703
IRC -20548
RAFGL 4245
TYC 6300-162-1
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Variability type
M
Spectral type
S4.5,8e-S5.5,8e
Mag. range
7.1 - 15.0 V
Discoverer
Norman Pogson (1863)
Epoch
Outburst
--
Period
396 d
Rise/eclipse dur.
47% (186 d)
Remarks
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1
Otero, Sebastian Alberto
Light from the companion has been subtracted (VSS Newsletter 2018-4).
2
Otero, Sebastian Alberto
Combined magnitude given. Companion V= 12.5. The variable reachs 14th mag. at minimum.
3
GCVS Team
Companion F3IV (ro < 0.8"). P var. Max = 2409013 + 385.1d*E (JD2401500 - 10500); Max = 2414582 + 399.0d*E (JD2413000 - 17500); Max = 2424363 + 387.9d*E (JD2417500 - 25500); since JD2425500 - see Table. S 5/6-e. There are Te lines and a very strong Li lambda 6708 line in the spectrum.
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References
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1
S. Walker, 2018, T Sagittarii - what’s hidden in the light curve
VSS Newsletter 2018-4 (September 2018)
2
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
2012arXiv1210.0821A
3
G.Pojmanski, Acta Astronomica 52, 397, 2002.
2002AcA....52..397P
4
Cannon, A. J., 1907, Second catalogue of variable stars
1907AnHar..55....1C
5
T. Karlsson, Maxima of Mira stars
--
6
General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
--
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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 = 3.55 H = 2.10 K = 1.50 J - K = 2.05
AllWISE
W3 = 0.30 W4 = -0.15 W3 - W4 = 0.45
APASS-DR9
B = 12.68 V = 11.73 g' = 12.22 r' = 11.81 i' = 9.19 B - V = 0.95
Images
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Supporting Documents
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Campaigns/Programs
LPV Program
Revision History
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