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Name
W Sgr
AAVSO UID
Constellation
J2000.0
B1950.0
18 01 49.56 -29 35 03.0
Proper motion
Galactic coord.
1.576 -3.980
Other names(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1758-29
ADS 11029 A
CD-29 14447
CPD-29 5230
HAT 622-9818
HD 164975
HIP 88567
HR 6742
IRC -30351
OGLE-BLG-CEP-26
SAO 186237
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Variability type
DCEP
Spectral type
F4-G2Ib
Mag. range
4.28 - 5.10 V
Discoverer
Williamina Fleming (1906)
Epoch
Outburst
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Period
7.594984 d
Rise/eclipse dur.
29% (52.86 h)
Remarks
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1
Billiaert, Bruno
Triple system. Spectroscopic binary (F5:V companion, 5 AU from the cepheid) and a 9.7 Vmag. A0V companion 0.16" away (2009AJ....137.3700E ). Combined range given.
2
GCVS Team
VB A (A 9.2m, 0.116", 153.3deg, 1976.477; B 13.5m, 33.4", 233deg; C 13.5m, 47.9", 101deg). P var. Max = 2403198.39 + 7.594695d*E (JD2403100 - 34500); since JD2434500 - see Table.
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References
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1
Breitfelder, J.; et al., 2016, Observational calibration of the projection
2016arXiv160104727B
2
I. Soszynski et al., 2011, arXiv:1112.1406v1 (online I data)
2011arXiv1112.1406S
3
I. Soszynski et al., 2011, arXiv:1112.1406v1 (online V data)
2011arXiv1112.1406S
4
I. Soszynski et al., 2011, arXiv:1112.1406v1 (Chart)
2011arXiv1112.1406S
5
I. Soszynski et al., 2011, arXiv:1112.1406v1 [astro-ph.SR]
2011arXiv1112.1406S
6
D.M. Nataf, K.Z. Stanek, G.A. Bakos, 2010, arXiv:1009.2502v1 [astro-ph.GA]
2010arXiv1009.2502N
7
Evans, N. R.; Massa, D.; Proffitt, C., 2009, Massive Star Multiplicity: The
2009AJ....137.3700E
8
H.H.Swope, HA 109, N1, 1940.
1940AnHar.109....1S
9
Cannon, A. J., 1907, Second catalogue of variable stars
1907AnHar..55....1C
10
General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
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Location
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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 = 3.57 H = 3.14 K = 3.06 J - K = 0.51
AllWISE
W3 = 2.66 W4 = 2.68 W3 - W4 = -0.02
Images
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Supporting Documents
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Revision History
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