------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 1675 2001 Aug 26 10.51UT 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 P/2001 Q2 (PETRIEW) (Q2001/243) The comet reported on E-Circular 1670 has been designated as above. Dan Green has derived orbital elements and comments that the comet made a close approach to Jupiter in 1982: T 2001 Sept 2.1860 TT w 182.29400 ) e 0.69628000 O 214.35700 ) 2000.0 q 0.9475000 A.U. i 14.09200 ) Source: IAUC 7688 Positions are geocentric Tom Boles, Coddenham obtained astrometry on 2001 August 25.15UT with the magnitude derived as about 12.6. Guy Hurst has computed the following daily ephemeris using 'EPH.EXE' by Nick James: m = 11.0 + 5.0 log R + 10.0 log r Date R.A. (2000) Dec. R r Elong Mag. Motion h m o ' (AU) (AU) o "/hr P.A. 2001 Aug 25.00 6 8.69 +25 46.7 0.890 0.955 59.9 10.5 189 108 26.00 6 13.98 +25 23.2 0.895 0.953 59.7 10.6 188 108 27.00 6 19.20 +24 59.2 0.900 0.952 59.4 10.6 186 109 28.00 6 24.34 +24 34.7 0.905 0.951 59.2 10.6 185 109 29.00 6 29.40 +24 9.9 0.910 0.950 59.0 10.6 183 110 30.00 6 34.39 +23 44.8 0.915 0.949 58.8 10.6 181 110 31.00 6 39.30 +23 19.3 0.920 0.948 58.6 10.6 180 111 2001 Sept 1.00 6 44.13 +22 53.5 0.926 0.948 58.5 10.6 178 111 2.00 6 48.90 +22 27.6 0.931 0.948 58.3 10.6 176 112 3.00 6 53.59 +22 1.3 0.937 0.948 58.2 10.6 175 112 4.00 6 58.21 +21 34.9 0.943 0.948 58.0 10.6 173 112 5.00 7 2.75 +21 8.4 0.948 0.948 57.9 10.7 171 113 6.00 7 7.23 +20 41.7 0.954 0.949 57.8 10.7 170 113 7.00 7 11.64 +20 14.9 0.960 0.950 57.7 10.7 168 114 8.00 7 15.98 +19 48.0 0.966 0.951 57.6 10.7 166 114 9.00 7 20.26 +19 21.1 0.973 0.953 57.5 10.7 165 114 10.00 7 24.47 +18 54.1 0.979 0.954 57.4 10.8 163 114 11.00 7 28.61 +18 27.0 0.985 0.956 57.4 10.8 161 115 12.00 7 32.69 +18 0.0 0.991 0.958 57.3 10.8 160 115 13.00 7 36.71 +17 33.0 0.997 0.961 57.3 10.8 158 115 14.00 7 40.67 +17 6.0 1.004 0.963 57.3 10.8 156 116 15.00 7 44.57 +16 39.0 1.010 0.966 57.3 10.9 154 116 16.00 7 48.40 +16 12.1 1.016 0.969 57.3 10.9 153 116 17.00 7 52.18 +15 45.3 1.023 0.972 57.3 10.9 151 116 18.00 7 55.91 +15 18.5 1.029 0.976 57.3 11.0 149 117 19.00 7 59.57 +14 51.9 1.035 0.979 57.3 11.0 148 117 20.00 8 3.18 +14 25.3 1.042 0.983 57.4 11.0 146 117 21.00 8 6.74 +13 58.9 1.048 0.987 57.4 11.0 144 117 22.00 8 10.24 +13 32.6 1.054 0.991 57.5 11.1 143 117 23.00 8 13.69 +13 6.4 1.061 0.995 57.6 11.1 141 118 24.00 8 17.09 +12 40.3 1.067 1.000 57.7 11.1 140 118 25.00 8 20.44 +12 14.4 1.073 1.005 57.8 11.2 138 118 26.00 8 23.73 +11 48.6 1.079 1.009 57.9 11.2 136 118 27.00 8 26.98 +11 23.0 1.086 1.015 58.0 11.2 135 118 28.00 8 30.18 +10 57.6 1.092 1.020 58.1 11.3 133 118 29.00 8 33.34 +10 32.3 1.098 1.025 58.2 11.3 132 119 30.00 8 36.45 +10 7.2 1.104 1.031 58.4 11.3 130 119 Guy M Hurst