THE ASTRONOMER Electronic Circular No 60 1987 Sept 13 08.02UT. Telecom Gold 72:MAG60138 Ed:Guy M Hurst, 16, Westminster Close, Kempshott Rise, Basingstoke, Hants, RG22 4PP, England. Telephone:(0256)471074.Int:+44256471074 Telex:265871(MONREF G) Quote"72:MAG60138 ATT G.HURST"in FIRST line. ------------------------------------------------------------------- Comet Rudenko (1987u) Extension of ephemeris on E-Circ.55: 1987 ET RA (1950) DEC (1950) Earth Sun Elong m1 Sept 22 12 48.34 +23 33.74 1.469 0.725 26.4 8.4 27 12 37.03 +21 32.31 1.464 0.676 23.6 8.1 Oct 2 12 25.56 +19 10.86 1.444 0.641 22.4 7.8 7 12 14.06 +16 22.30 1.409 0.623 23.2 7.6 12 12 02.78 +12 59.99 1.359 0.623 25.6 7.6 The comet is badly placed and no observations have been reported since those of Aug 30 when m1 was about 10. Supernova 1987L in NGC 2336 A.V.Filippenko and M.A.Strauss, University of Calfiornia at Berkeley report that this supernova is of type Ia rather than type II (as given in this month's TA). (IAUC 4447) A chart and sequence have now been drawn and can be supplied free. Please e-mail MAG60138 and ask for chart SN1987L. Based on our preliminary sequence, G.M.Hurst estimated the magnitude as 14.6 on photos by A.Young of 1987 Aug 27. TA Index David Moore advises us that his mailbox number has been changed to 74:EIM658. Editorial Absence The Editor will be away on business from Sept 14-18 during which time Alan Young will continue to issue E-circulars and monitor my mailbox. Messages should continue to be sent to MAG60138. Other transmissions including chart catalogues and database files will be sent upon my return. Guy M Hurst