Circular No. 8732

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVAE 2006ds AND 2006dt

Two additional supernovae have been discovered on unfiltered
CCD images:  2006ds by Y.-S. Tsai and K.-C. Lu (0.40-m reflector,
Kenting Star Village Observatory, Hengchun, Taiwan; note spelling
correction to Lu's name from the initial report on CBET 580),
and 2006dt by N. Lee and W. Li (via LOSS/KAIT; cf. IAUC 8731).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006ds  July 18.80  22 55 18.32  -33 55 17.5  16.1  5".4 W, 3".6 S
2006dt  July 20.20  14 35 43.11  + 8 17 55.8  16.8  2".9 E, 6".2 S

SN 2006ds in PGC 70011 was confirmed at mag about 15.5 on a CCD
frame taken by Tsai and Lu on July 19.82 UT; nothing is visible at
this location on a Digitized Sky Survey image (limiting red mag
20.5).  SN 2006ds is a type-II supernova (spectroscopic details on
CBET 580).  Additional magnitudes for 2006dt in NGC 5681:  July
11.20, [19.0; 15.23, 17.5.  SN 2006dt is a type-Ia supernova, near
maximum on July 21.22 (details on CBET 582).

Host galaxy info: vel = 7899 km/s, 0.9 x 0.6 ; 14.3; SA:(rs)bc II

SN type info: Ia

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