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Name
Y Sco
AAVSO UID
Constellation
J2000.0
B1950.0
16 26 31.17 -19 14 19.4
Proper motion
RA: 1.7 +/- 2.7 mas/y Dec: 7.6 +/- 2.2 mas/y Source: 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
ASASSN-V J162926.34-192050.1
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
Christian Peters (1876)
Epoch
Outburst
--
Period
351 d
Rise/eclipse dur.
45% (158 d)
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,
2012arXiv1210.0821A
2
K.T. Wraight, D. Bewsher, G.J. White, W. Nowotny, A.J. Norton, C. Paladini,
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
Cannon, A. J., 1907, Second catalogue of variable stars
1907AnHar..55....1C
7
General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
--
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Location
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AAVSO Variable Star Plotter
AAVSO Light Curve
AAVSO WebObs
APASS
AAVSOnet EPD
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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 = 4.31 H = 3.07 K = 2.38 J - K = 1.93
AllWISE
W3 = 0.37 W4 = -0.16 W3 - W4 = 0.53
APASS-DR9
B = 15.02 V = 13.89 g' = 15.24 r' = 12.62 i' = 10.22 B - V = 1.13
Images
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Supporting Documents
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Revision History
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5
Fernig, Leo
2022-04-22 13:33 UTC
Discoverer updated from 1907AnHar..55....1C page 20
4
Otero, Sebastian Alberto
2013-01-30 01:25 UTC
Period and epoch from ASAS-3 data. Minimum magnitude from AAVSO V data. Spectral type from Skiff (2012).
3
Admin, VSX
2012-06-09 00:53 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
2010-01-05 04:43 UTC
Position updated from the GCVS version of November 2009.
1
Admin, VSX
2005-12-18 01:33 UTC
Initial upload.
