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AAVSO International Database

Alert Notice 153: Supernova in NGC 1380 AND Nova Pup 1991 [V351 Pup]

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 153 (January 14, 1992)

Alert Notice 152: Nova Puppis 1991 [V351 Pup]

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa SPAN: cfa::aavso
INTERNET: aavso@cfa.harvard.edu
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 152 (January 6, 1992)

Alert Notice 580: ASASSN-17fp rebrightening event and ongoing monitoring

May 24, 2017: ASASSN-17fp, discovered on 2017 April 28 and classified as a helium dwarf nova, was observed to be in outburst again on May 16 after fading 2.5 magnitudes from its original outburst. Dr. Tom Marsh (University of Warwick) and Dr. Elme Breedt (University of Cambridge) requested immediate time-series coverage.

Alert Notice 578: Nova in Centaurus - ASASSN-17gk

May 23, 2017

Event: Nova in Centaurus - ASASSN-17gk

Discovered by: All Sky Automated Survey for SuperNovae (ASAS-SN, (K. Z. Stanek (OSU) et al., ATel #10387)

Discovery magnitude: 10.9 V

Alert Notice 577: SN 2017eaw in NGC 6946 (PSN J20344424+6011359)

Correction: The original announcement of this Alert Notice included the incorrect assignment of observations made by David Boyd to David Blane. The attribution has been corrected in the observations below. We extend sincere apologies to David Boyd for the error. -- EOW  May 17, 2017

May 16, 2017

Event: SN 2017eaw - bright supernova in NGC 6946 (Cepheus)

Discovered by: Patrick Wiggins (Tooele, UT)

Alert Notice 576: Nova in Ophiuchus - TCP J17394608-2457555

May 11, 2017

Event: Nova in Ophiuchus

Discovered by: Koichi Itagaki (Yamagata, Japan)

Discovery magnitude: magnitude 13.6 (CCD, unfiltered, using 0.20-m f/3.0 reflector + CCD)

Special Notice #429: V694 Mon (MWC 560) spectroscopy requested

May 2, 2017: Further to AAVSO Alert Notice 538, the campaign from 2016 on V694 Mon (MWC 560) has been continued, but with different requirements. Photometry is no longer specifically requested on a regular basis (although ongoing observations that do not interfere with other obligations are welcome). Spectroscopy on a cadence of a week or two is requested to monitor changes in the disk outflow. V694 Mon is presently nearing opposition, but the request for spectroscopy continues until further notice.

Alert Notice 575: Monitoring of Swift J1357.2-0933 (CRTS J135716.8-093238) requested

April 28, 2017: Dr. Gregory Sivakoff (University of Alberta) has requested AAVSO observers' assistance in monitoring Swift J1357.2-0933 (CRTS J135716.8-093238) during its current outburst.

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