Circular No. 7782

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)

SUPERNOVA 2001is IN NGC 1961

Y. L. Qiu and J. Y. Hu, Beijing Astronomical Observatory (BAO), report the discovery by the BAO Supernova Survey of an apparent supernova (mag about 17.6) in unfiltered images taken with the BAO 0.6-m telescope on Dec. 22.56 and 23.73 UT; the new object appeared at mag 17.9 on Dec. 26.53. SN 2001is is located at R.A. = 5h42m09s.07, Decl. = +69o21'54".8 (equinox 2000.0), which is 23".2 east and 48".2 south of the nucleus of NGC 1961. An image taken with the same telescope on Dec. 14 showed no star at the position of the new object (limiting mag about 18.5). SN 2001is was apparently detected independently by LOTOSS (cf. IAUC 7514), as reported by M. Papenkova (University of California, Berkeley) and M. Schwartz (Cottage Grove, OR), at the following unfiltered CCD magnitudes: 1998 Sept. 17.5, [19.0: (KAIT); 2001 Dec. 24.3, about 18.0 (KAIT); 26.4, about 18.0 (Tenagra III 0.5-m telescope). Schwartz provides position end figures 09s.16, 55".3, or 25".4 east and 49".8 south of the nucleus of NGC 1961.

-----------------------------

Host galaxy info: vel = 3934 km/s, 4.6 x 3.0, 11.73, SAB(rs)c LINER

SN type info: Ib

------------------------------

Return to KAIT home page