Aavso Alert Notice 392

Supernova 2008hy in IC 334

Further to CBETs #1608 (Puckett and Langoussis; Daniel W.E. Green, editor) and #1610 (Dennefeld et al., and Yamanaka et al.) the supernova SN 2008hy has been identified as a Type Ia supernova, and is believed to be near maximum light (V=14.3 on 2008 Dec 07.13, JD 2454807.63; T. Orff, reported by Puckett and Langoussis). The object is located approximately 100 arcseconds NNE of the center of IC 334.

Independently obtained spectroscopy of the supernova by Dennefeld et al. (2008 December 07.95, obtained at Haute Provence Obs.) and Yamanaka et al. (2008 December 07.8, obtained at Higashi-Hiroshima Astron. Obs.) both indicate the supernova is of Type Ia, no more than a week after maximum light.

A comparison star sequence is not yet available, but there are several Tycho stars within 10 arcminutes of the supernova. Please clearly identify all comparison stars used. Observers are asked to obtain filtered data if possible, with B, V, and Ic filters preferred.

Supernova 2008hy is located at the following coordinates:

RA: 03 45 08.45 , Dec: +76 39 55.5 (J2000)

Finder charts for this supernova may be plotted by entering the coordinates above into VSP:

http://www.aavso.org/observing/charts/vsp/

It is advisable to check the "Use DSS Image" option so that IC 334 is included on the chart.

Please SUBMIT OBSERVATIONS TO THE AAVSO with the name "SN 2008hy" (AUID 000-BJJ-253).

Information on submitting observations to the AAVSO may be found at: http://www.aavso.org/observing/submit/