August 4, 2008
As reported on VSNET (Kato, vsnet-alert 10399), the infrequently outbursting dwarf nova HO Del is in superoutburst for the first time since 2001. Observations submitted to the AAVSO indicate the star is currently near m(vis) ~ 14.7 (Gary Poyner, JD 2454682.485), and likely went into outburst some time between JD 2454680.43 (Eddy Muyllaert, m(vis) < 14.4) and JD 2454681.49 (Hubert Hautecler, m(vis) = 14.2). Kato et al (2003; PASJ 55, 989) showed that this star has several peculiarities among the SU UMa stars, including: peculiar superhump behavior; a low outburst amplitude relative to other long recurrence-time SU UMa stars; and a high X-ray luminosity. Visual observations and instrumental time-series photometry of HO Del are encouraged. HO Del is located at RA: 20 36 55.50 , Dec: +14 03 10.0 (J2000) Charts and sequence photometry for HO Del are available via VSP: http://www.aavso.org/observing/charts/vsp/index.html?pickname=HO%20Del Please submit data to the AAVSO as "HO Del" (AUID 000-BCL-980). This AAVSO Special Notice was prepared by Matthew Templeton. --------------------------------------------------- SUBMIT OBSERVATIONS TO THE AAVSO Information on submitting observations to the AAVSO may be found at: http://www.aavso.org/observing/submit/ SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION A Special Notice archive is available at the following URL: http://www.aavso.org/publications/specialnotice/ Subscribing and Unsubscribing may be done at the following URL: http://www.aavso.org/publications/email/