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Alert Notice 623: Observations of V1017 Sgr requested

March 16, 2018: Dr. Jennifer Sokoloski (Columbia University) and colleagues (led by Dr. Koji Mukai, NASA Goddard Space Flight Center) have requested AAVSO assistance in observing the nova/dwarf nova V1017 Sgr in preparation for an XMM-Newton observation scheduled for 2018 March 23 or 24.

Confirmation that the system is not in dwarf-nova outburst as of March 23 is needed so that the XMM observation may take place.

Observers are requested to obtain a few observations in V or CV between now and March 23 "to tell us whether it is at about 13th or 14th mag or significantly brighter." It is essential to have a positive measurement on March 22. Visual observations are welcome.

Coordinates (2000.0):  R.A. 18 32 04.47   Dec. -29 23 12.6

Charts with a comparison star sequence for V1017 Sgr may be plotted using the AAVSO Variable Star Plotter (VSP).

Please submit observations to the AAVSO International Database using the name V1017 SGR.

This observing campaign is being followed on the AAVSO Campaigns and Observing Reports online forum at https://www.aavso.org/v1017-sgr-observations-2018

 

This AAVSO Alert Notice was compiled by Elizabeth O. Waagen.
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