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Alert Notice 582: Nova Oph 2017 photometry requested for Swift TOO observations

June 15, 2017: Drs. Frederick Walter (Stony Brook University) and Paul Kuin (University College London) and colleagues have requested AAVSO observers' assistance in obtaining photometry of Nova Oph 2017 (TCP J17394608-2457555) in support of Target-of-Opportunity observations with Swift UVOT that have been triggered and are scheduled for the next ten days (2017 June 16 - 25), and possibly longer.

Photometry to date indicates that Nova Oph 2017, currently at magnitude V ~15.6, may very well undergo a major dust event in the coming days, and BVRI photometry is requested. V photometry is given highest priority. Observations are requested once to a few times per night; if/when fast fading is seen, a faster cadence of observations is requested.

Coordinates (2000.0): R.A. 17 39 46.10  Decl. -24 57 55.8

Charts: Charts with a comparison star sequence for Nov Oph 2017 may be created using the AAVSO Variable Star Plotter (VSP).

Submit observations: Please submit observations to the AAVSO International Database using the name Nova Oph 2017. Once a GCVS name is announced in an IAU Circular or CBET, please use that name.

The thread in the AAVSO Time Sensitive forum on this nova should be used to continue discussion as Nova Oph 2017 continues to evolve: https://www.aavso.org/tcp-j17394608-2457555-new-transient-136-mag-galactic-nova-ophiuchus-updated

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

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