------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2118 2005 Jun 05 19.00UT 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.theastronomer.org ------------------------------------------------------------------- COMET C/2005 K2 (LINEAR) Giovanni Sostero, Costalunga, Italy, reports on the comet announced on TA E-Circular 2115. On May 27.91, he obtained a magnitude of 13.6 with Cousins R filter and 12.8 with Johnson V filter, both using a 0.15-m reflector. The coma diameter was 2.8'. The following orbital elements and ephemeris are from MPEC K58: T 2005 July 5.390 TT MPC q 0.54463 (2000.0) P Q Peri. 216.580 -0.649553 +0.296110 Node 45.727 -0.216103 +0.811157 e 1.0 Incl. 102.036 -0.728959 -0.504325 >From 31 observations 2005 May 19-29. Ephemeris: C/2005 K2 (LINEAR) Date TT R. A. (2000) Decl. Delta r Elong. m1 2005 05 30 05 42.48 +85 11.5 0.768 0.963 63.7 16.8 2005 06 09 08 39.07 +61 01.8 0.647 0.804 52.3 15.6 2005 06 19 08 48.09 +30 53.8 0.674 0.661 40.0 14.8 2005 06 29 08 38.33 +08 25.9 0.843 0.565 33.7 14.6 2005 07 09 08 19.63 -03 29.5 1.066 0.551 30.6 15.1 2005 07 19 07 59.98 -08 36.5 1.263 0.628 29.5 16.0 2005 07 29 07 44.00 -10 36.2 1.405 0.761 31.8 17.1 Despite the faint predicted values for m1 above, the results by Giovanni suggest the comet may be much brighter if the values of May 27 did not represent a temporary outburst. SUPERNOVA 2005cc IN NGC 5383 Discovery by Puckett and Langoussis of a possible supernova (CBET 154): SN 2005 UT R.A. (2000.0) Decl. Mag. Offset 2005cc May 19.22 13 57 04.85 +41 50 41.8 17.7 1.2"W, 5.0"S SUPERNOVA 2005cd IN IC 651 Discovery by Taiwan Supernova Survey of a possible supernova (CBET 155): SN 2005 UT R.A. (2000.0) Decl. Mag. Offset 2005cd May 16.53 10 50 57.60 -02 08 48.2 17.4 12.9"W, 12.8"N Guy M Hurst