THE ASTRONOMER Electronic Circular No 802 1993 Dec 26 19.45UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074 TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885 GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH ------------------------------------------------------------------- SUPERNOVA 1993ai IN UGC 3483 Jean Mueller reports her discovery of a supernova (blue mag about 18) located 23".5 west of the nucleus of UGC 3483 (R.A. = 6h29m.3, Decl. = +51o23', equinox 1950.0). The object was found on a plate taken on Dec. 10 UT by D.J. Griffith, J. D. Mendenhall, and Mueller with the 1.2-m Oschin Schmidt Telescope in the course of the second Palomar Sky Survey. A. V. Filippenko and L. C. Ho, University of California at Berkeley; and W. L. W. Sargent, California Institute of Technology, report that an uncalibrated spectrum (range 350-750 nm) obtained on Dec. 21 with the 5-m Hale reflector at Palomar Observatory suggests that the supernova is of type Ia, roughly 1 month past maximum brightness. A redshift of about 0.034 was measured for the parent galaxy from the Na I D absorption line. IAUC 5912 LL ANDROMEDAE The following results have been received either direct or via Taichi Kato in Japan of the recent rare outburst of LL And: JD nos are 2449000+ UT Date UT Dec JD Estimate mpv mv Cl I Surname 05/11/93 0.577 297.08 [14.2 M Moriyama 09/11/93 0.010 300.51 [15.3 G Poyner 12/11/93 0.008 303.51 [15.3 G Poyner 12/11/93 0.546 304.05 [14.2 M Moriyama 14/11/93 0.914 306.41 [15.3 G Poyner 19/11/93 0.911 311.41 [14.9 G Poyner 06/12/93 0.878 328.38 [13.7 P Schmeer 07/12/93 0.567 329.07 [14.2 M Moriyama 07/12/93 0.906 329.41 14.0 T Vanmunster 07/12/93 0.923 329.42 13.9 G Poyner 07/12/93 0.927 329.43 13.9 P Van Cauteren 07/12/93 0.929 329.43 13.8 W Worraker 07/12/93 0.930 329.43 14.0 G Poyner 08/12/93 0.000 329.50 13.9 T Vanmunster 08/12/93 0.628 330.13 [14.2 M Moriyama 09/12/93 0.367 330.87 14.1 T Kato 09/12/93 0.740 331.24 13.9 T Vanmunster 09/12/93 0.900 331.40 14.1 2P Van Cauteren 10/12/93 0.830 332.33 14.3 P Van Cauteren 10/12/93 0.843 332.34 14.2 M Mobberley 10/12/93 0.890 332.39 13.9 T Vanmunster 11/12/93 0.476 332.98 14.2 T Kato 11/12/93 0.865 333.37 14.0 G Poyner 12/12/93 0.496 334.00 14.2 T Kato 14/12/93 0.018 335.52 14.0 G Poyner 15/12/93 0.566 337.07 14.1 M Moriyama 15/12/93 0.850 337.35 15.0 T Vanmunster 17/12/93 0.612 339.11 [14.2 M Moriyama 19/12/93 0.498 341.00 17.1 T Kato It would be helpful if the above observers could e-mail through full details of each estimate and the comparison stars used (quoting GSC numbers where possible).