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Solar Bulletin - Volume 72, Number 10

The October Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: https://www.aavso.org/solar-bulletin

The October SID Data report is available here: https://www.aavso.org/sid-database

Alert Notice 562: Photometry of V725 Tau needed immediately

November 15, 2016: Dr. Franco Giovannelli (Istituto di Astrofisica e Planetologia Spaziali di Roma) has requested AAVSO assistance in monitoring V725 Tau, the Be star in the high-mass X-ray transient A0535+26/HDE245770, in order to plan for the X-ray outburst that follows 8 days after the optical brightening that occurs at periastron passage.

Periastron passage will occur on 16 November 2016, so coverage is needed beginning immediately and continuing for at least 15 days after periastron, until December 2.

Special Notice #425: FO Aqr XMM-Newton observations scheduled

November 9, 2016: Further to AAVSO Alert Notice 545, time series observations of the intermediate polar cataclysmic variable FO Aqr are requested to provide simultaneous coverage of XMM-Newton observations scheduled for 2016 November 13 19:43 UTC to November 14 8:13 UTC.

Alert Notice 561: Nova in Sagittarius = ASASSN-16ma = PNV J18205200-2822100 [V5856 Sgr]

October 28, 2016

Event: Nova in Sagittarius  [V5856 Sgr]

Discovered independently by:
 - ASAS-SN (K. Z. Stanek (Ohio State University) et al.; ATel #9669)
 - Yukio Sakurai (Mito, Japan; via TOCP page)

Discovery magnitude:
 - ASAS-SN: V~13.7, using quadruple 14-cm "Cassius" telescope at CTIO
 - Sakurai: 10.4 unfiltered CCD, using Nikon D7100 digital camera + 180-mm f/2.8 lens

Alert Notice 560: TCP J18102829-2729590 = Nova in Sagittarius [V5855 Sgr]

October 24, 2016

Event: Nova in Sagittarius = TCP J18102829-2729590  [V5855 Sgr]

Discovered by: Koichi Itagaki (Yamagata, Japan) (reported to CBAT via S. Nakano (Teppo-cho, Yamagata, Japan))

Discovery magnitude: 10.7 unfiltered CCD, using 180-mm f/4.0 lens

Alert Notice 559: Observations of CI Cam needed to support spectroscopy

October 19, 2016: Kelly Gourdji and Marcella Wijngaarden (graduate students at the University of Amsterdam/Anton Pannekoek Institute for Astronomy) have requested AAVSO observers' assistance in providing optical photometry of CI Cam in support of their high-resolution spectroscopy with the Mercator telescope + Hermes spectrograph in La Palma from now through January 2017.

Alert Notice 558: CI Aql monitoring needed to support HST observations

October 19, 2016: Dr. Edward Sion (Villanova University) has requested AAVSO observers' assistance in monitoring the recurrent nova CI Aql in support of observations with the Hubble Space Telescope Cosmic Origins Spectrograph scheduled for October 31 - November 2, 2016, and November 3 - November 5, 2016. These observations are part of a study on short orbital period recurrent novae as Supernovae Type Ia progenitors.

Alert Notice 557: MASTER OT J010603.18-744715.8 = Nova in SMC (Tucana)

October 17, 2016

Event: Nova in the Small Magellanic Cloud (Tucana)

Discovered by: the MASTER-OAFA auto-detection system (reported by V. Shumkov (Lomonosov Moscow State University) et al. in ATel #9621)

Discovery magnitude: 10.9 unfiltered CCD

Solar Bulletin - Volume 72, Number 09

The September Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: https://www.aavso.org/solar-bulletin

The September SID Data report is available here: https://www.aavso.org/sid-database

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