------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1471 1999 Nov 28 17.16UT Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074 INTERNET: GUY@TAHQ.DEMON.CO.UK GMH at AST.STAR.RL.AC.UK WORLD WIDE WEB http://www.demon.co.uk/astronomer ------------------------------------------------------------------- SUPERNOVA 1999es IN ANONYMOUS GALAXY J. Mueller reports her discovery of a supernova (mag about 18.5) on a red plate taken on Nov. 2 UT by K. Rykoski and herself with the 1.2-m Oschin Schmidt Telescope in the course of the Palomar Outer Solar System Ecliptic Survey. SN 1999es is located at R.A. = 2h32m43s.4, Decl. = +22o27'08" (equinox 2000.0), which is 12".8 west and 2" north of the host galaxy. There is no object at the position of SN 1999es on the Digitized Sky Survey or on a red plate from the second Palomar Sky Survey. IAUC 7301 (extract) DK CAS Patrick Schmeer, Bischmisheim, Germany reports an outburst of this catalogued SS-Cygni variable using CCD images obtained with a robotic telescope: 1999 Nov 21.156UT, [18.0; 27.137, 15.3. Sequence: USNO-A2.0 (red magnitudes) Instrument: IRO (0.5-m RCT + AP-8) He adds: DK Cas is according to the GCVS an SS Cyg-type dwarf nova with a photographic magnitude range of 15.3 to about 19.5 and a mean cycle length of approximately 96 days. The following USNO-A2.0 data are available for DK Cas (in outburst): R.A. 00h18m07.907s Decl. +57o26'07.43" (J2000.0)r= 16.5, b= 17.7 Taichi Kato and M.Vemura, Japan report confirmation of the outburst: 1999 Nov 27.501UT, 14.93. Telescope: 25-cm SCT + ST-7 unfiltered Comparison: GSC3661.1642, Rc=9.85 assumed COMET 1999 V1 C. W. Hergenrother, Lunar and Planetary Laboratory, reports the discovery of another comet by the Catalina Sky Survey. 1999 UT R.A. (2000) Decl. m1 Observer Nov. 5.43943 9 37 11.47 +11 32 03.7 17.6 Hergenrother 5.44850 9 37 12.27 +11 31 56.6 17.8 " 5.45751 9 37 12.55 +11 31 52.2 17.5 " 5.46704 9 37 13.18 +11 31 45.8 18.0 " 6.44715 9 38 09.20 +11 22 20.9 18.0 " 6.45209 9 38 09.55 +11 22 18.0 17.6 " 6.47319 9 38 10.79 +11 22 05.8 Shelus 6.48359 9 38 10.98 +11 21 59.7 " 6.49391 9 38 11.62 +11 21 52.8 " C. W. Hergenrother (Catalina Sky Survey). 0.41-m Schmidt + CCD. Apparent faint tail on single frames. On a 240-s coadded exposure on Nov. 5 there showed a 13" coma and a 60" tail in p.a. 300 deg. P. J. Shelus (McDonald Observatory). 0.76-m reflector with prime focus corrector + LF1 CCD. Fuzzy head and faint tail roughly in p.a. 320 deg. IAUC 7302 Guy M Hurst