THE ASTRONOMER Electronic Circular No 264 1989 Feb 21 21.15UT. Telecom Gold 72:MAG From: THE_ASTRONOMER1 (MAG60138) Delivered: Thu 23-Feb-89 19:56 GMT Sys 10072 (33) Subject: **THE ASTRONOMER URGENT** Mail Id: IPM-10072-890223-179480507 THE ASTRONOMER Electronic Circular No 265 1989 Feb 23 19.45UT. 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. ------------------------------------------------------------------- PERIODIC COMET CLARK (1989h) J. Gibson, Jet Propulsion Laboratory, reports his recovery of this comet with the Palomar 1.5-m reflector (+ CCD). A 300-s integration on Jan. 2 revealed a 5" x 8" elliptical coma with eccentric condensation, the maximum extent of the coma being toward p.a. 290 deg from the condensation.The Jan. 17 and 18 images show a 5" coma with central condensation and a 10" tail in p.a. about 290 deg. The following observations are in agreement with the orbital elements on MPC 12128 (ephemeris on MPC 14035). 1989 UT R.A. (1950) Decl. m1 Jan. 2.54520 11 31 29.33 +15 38 34.4 20 2.54984 11 31 29.42 +15 38 35.0 2.55384 11 31 29.50 +15 38 35.5 2.55812 11 31 29.57 +15 38 36.1 17.43984 11 33 52.39 +16 26 39.4 19 17.44553 11 33 52.38 +16 26 41.0 17.45216 11 33 52.34 +16 26 42.8 18.49492 11 33 51.07 +16 31 18.1 19 18.50016 11 33 51.04 +16 31 19.4 18.50530 11 33 51.01 +16 31 20.6 IAUC 4742 TA INDEX We are delighted to welcome Aarre Kellomaki of Finland to our group, the first from that country. His mailbox number is: 72:MAG40970 Guy M Hurst