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Latest Details
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Name
  EW Sco  
AAVSO UID
000-BFK-472 (2 observations)  
Constellation
Scorpius Sequence
J2000.0
16 57 50.06 -32 34 44.2  (254.45858 -32.57894) Search nearby
B1950.0 16 54 35.34 -32 30 09.0
Proper motion
RA: -0.8 +/- 1.1 mas/yDec: 2.9 +/- 1.4 mas/ySource: UCAC4
Galactic coord. 351.164 +6.383
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J16575006-3234441 ASAS J165750-3234.7 ASASSN-V J165749.93-323444.3
CD-32 12196 CSS 949 GSC 07364-00851
HD 152934 HV 4291 IOMC 7364000014
IRAS 16545-3230 IRC -30273 MC79 1-173
TYC 7364-851-1    
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Variability type
SRB
Spectral type M3-M6(S)
Mag. range
9.9 - 11.5 V
Discoverer --
Epoch
18 Aug 2009 (HJD 2455062.00) Ephemeris
Outburst --
Period 126.23 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Other periods 223 and 639 d. Long Secondary Period (LSP) 1300 d.
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References
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1 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) 2014yCat....1.2023S
2 P. Tisserand, G.C. Clayton, D.L. Welch, B. Pilecki, L. Wyrzykowski, D.
Kilkenny, 2012, arXiv:1211.2475 [astro-ph.SR]
2012arXiv1211.2475T
3 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1979A&AS...38..335M
6 H.H.Swope, HB N887, 1932. 1932BHarO.887....6S
7 H.H.Swope, HB N857, 1928. 1928BHarO.857....1S
External Links
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Location    Go   
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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 = 3.98H = 2.88K = 2.46J - K = 1.52
AllWISE W3 = 1.88W4 = 1.13W3 - W4 = 0.74
APASS-DR9 B = 12.29V = 10.28g' = 11.17B - V = 2.00
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 16 57 50.06 -32 34 44.2 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2018-03-09 00:25 UTC Type, period, epoch and range from ASAS-3 data. Spectral type from Skiff (2016). UCAC4 position.
3 Admin, VSX 2012-11-14 02:31 UTC Update from [2012arXiv1211.2475T].
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.