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Name
  Y Sco  
AAVSO UID
000-BBX-555 (1777 observations)  
Constellation
Scorpius Sequence
J2000.0
16 29 26.43 -19 20 50.7  (247.36013 -19.34742) Search nearby
B1950.0 16 26 31.17 -19 14 19.4
Proper motion
RA: 1.7 +/- 2.7 mas/yDec: 7.6 +/- 2.2 mas/ySource: UCAC4
Galactic coord. 357.592 +19.667
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J16292643-1920509 AAVSO 1623-19 ASAS J162926-1920.9
GSC 06211-00430 IOMC 6211000004 IRAS 16265-1914
IRC -20317 NSVS J1629267-192050 RAFGL 5051S
[D75] 57    
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Variability type
M
Spectral type M7-M9
Mag. range
10.9 - <15.7 V
Discoverer --
Epoch
09 Aug 2001 (HJD 2452131) Ephemeris
Outburst --
Period 351 d
Rise/eclipse dur. 45%
Remarks
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1 Admin, VSX Y Sco will not have its name changed to V2613 Oph per Table 2 of The 78th Name-List of Variable Stars (http://www.konkoly.hu/cgi-bin/IBVS?5721). Erroneous constellation boundary data in use at the time of calculations gave rise to the notion that this star did not reside within Scorpius (N.N.Samus, private communication, 1-6 Apr 2007).
2 GCVS Team Since 1972 varies its brightness in the range 12.3m-15.0m irregularly, maxima are unpredictable [JRAS Can 70, 93, 1976.].
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 K.T. Wraight, D. Bewsher, G.J. White, W. Nowotny, A.J. Norton, C. Paladini,
2012, arXiv:1206.1485v1 [astro-ph.SR]
2012arXiv1206.1485W
3 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1975AbaOB..47..171D
6 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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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 = 4.31H = 3.07K = 2.38J - K = 1.93
AllWISE W3 = 0.37W4 = -0.16W3 - W4 = 0.53
APASS-DR9 B = 15.02V = 13.89g' = 15.24r' = 12.62i' = 10.22B - V = 1.13
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2013-01-29 20:25 UTC Period and epoch from ASAS-3 data. Minimum magnitude from AAVSO V data. Spectral type from Skiff (2012).
3 Admin, VSX 2012-06-08 20:53 UTC Update from [K.T. Wraight, D. Bewsher, G.J. White, W. Nowotny, A.J. Norton, C. Paladini, 2012, arXiv:1206.1485v1 [astro-ph.SR]].
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.