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Name
  AC Sco  
AAVSO UID
000-BCX-129 (83 observations)  
Constellation
Scorpius Sequence
J2000.0
16 46 35.20 -27 23 17.0  (251.64667 -27.38806) Search nearby
B1950.0 16 43 28.76 -27 17 55.0
Galactic coord. 353.737 +11.522
Other names

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2MASS J16463519-2723167 3UCAC 126-204172 AAVSO 1640-27
AN 247.1904 ASAS J164635-2723.3 Downes AC Sco
GSC 06817-00577 HV 1095 IRAS 16434-2717
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Variability type
UG:
Spectral type --
Mag. range
12.5 - <16.0 p
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 GCVS Team According to [P.P.Parenago, Perem. Zvezdy 3, 99, 1931.], CST:, 12.2m - 12.6m pg.
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References
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1 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
2 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
3 K.Himpel, BZ 26, 25, 1944. --
4 H.H.Swope, HB N887, 1932. 1932BHarO.887....6S
5 E.C. Pickering, 1905, AN 167, 161 1905AN....167..161P
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Supporting Documents
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1 Phase plot of ASAS-3 data Wils, Patrick 2009-10-28 03:08 UTC ASAS-3 data plotted with a period of 360d.
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Revision History
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2 Wils, Patrick 2009-10-28 03:08 UTC The chart from Swope [1932BHarO.887....6S] indicates GSC 6817-187 as the variable (at 16 46 51.07 -27 24 28.0), different from both the GCVS (GSC 6817-577 at 16 46 35.21 -27 23 16.8) and the Downes position (GSC 6817-786 at 16 46 45.89 -27 24 25.8). According to ASAS-3 data, GSC 6817-577 seems to be the only variable among them. The position in the discovery paper 16 40 23 -27 12.4 (for equinox 1900, or 16 46 36 -27 23.4 precessed to 2000) [1905AN....167..161P] is also closest to GSC 6817-577.
Period and type from ASAS data. Position from UCAC3.
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.