------------------------------------------------------------------- THE ASTRONOMER Electronic Circular No 2962 2013 Nov 16 17.06UT 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 Backup: gmh@wdcc1.bnsc.rl.ac.uk WORLD WIDE WEB http://www.theastronomer.org ------------------------------------------------------------------- COMET C/2013 R1 (LOVEJOY) Carl W. Hergenrother, Lunar and Planetary Laboratory, University of Arizona and TA subscriber, reports that three strongly curved jets have been observed in Comet C/2013 R1. The features were detected in V- and R-band images with a plate scale of 0".376 that were taken with the 1.8-m Vatican Advanced Technology Telescope (VATT) on 2013 Nov. 11.46UT. The first jet emanates from the near- nucleus region at PA 135 deg with an endpoint 8.2" from the nucleus at PA 180deg. The second jet emanates at PA 100 deg and ends 9.3" from the nucleus at p.a. 130 deg. The third jet is the weakest and least curved; it emanates at PA 080deg and ends 9.7" from the nucleus at p.a. 90 deg. No obvious motion was detected over a span of 15 minutes. Graham Wolf, New Zealand relays that C. Wyatt of NWS, Australia observed it visually on Oct 3.73UT at magnitude 10.2 (0.25-m refl.). Other visual estimates: Oct 16.22, 8.7, (J. Gonzalez, Spain, 25x100B); 31.15, 7.2,(Andreas Kammerer, Germany, 9x63B); Nov. 2.12, 6.6, 10' (Bjorn Granslo, Norway, 10x50B; Nov 7.50, 6.5, (Carl Hergenrother, Tucson, U.S.A., 10x50B); 13.16, 5.6, (Granslo). T 2013 Dec. 22.7337 TT MPC q 0.811822 (2000.0) P Q z +0.001968 Peri. 67.1669 -0.2526103 -0.4647780 +/-0.000024 Node 70.7111 +0.1286992 -0.8854199 e 0.998402 Incl. 64.0399 +0.9589706 -0.0036027 >From 1061 observations 2013 Sept. 8-Nov. 8, mean residual 0".4. Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2013 11 16 10 24 01.0 +33 35 11 0.4086 1.0608 88.6 68.7 8.3 2013 11 17 10 40 09.7 +35 17 24 0.4031 1.0494 87.2 70.2 8.2 2013 11 18 10 57 20.6 +36 53 30 0.3993 1.0382 85.7 71.7 8.2 2013 11 19 11 15 28.3 +38 21 21 0.3972 1.0271 84.2 73.2 8.1 2013 11 20 11 34 24.2 +39 38 56 0.3967 1.0162 82.6 74.6 8.1 2013 11 21 11 53 56.4 +40 44 33 0.3981 1.0055 81.0 76.0 8.0 2013 11 22 12 13 50.3 +41 37 02 0.4011 0.9950 79.3 77.3 8.0 2013 11 23 12 33 49.3 +42 15 44 0.4057 0.9846 77.7 78.5 8.0 2013 11 24 12 53 36.5 +42 40 40 0.4120 0.9745 76.1 79.6 8.0 2013 11 25 13 12 55.7 +42 52 26 0.4197 0.9645 74.6 80.6 8.0 2013 11 26 13 31 33.2 +42 52 06 0.4289 0.9548 73.1 81.5 8.0 2013 11 27 13 49 18.1 +42 41 02 0.4394 0.9453 71.6 82.2 8.0 2013 11 28 14 06 03.1 +42 20 48 0.4511 0.9360 70.2 82.8 8.0 2013 11 29 14 21 43.9 +41 53 00 0.4639 0.9270 68.9 83.2 8.0 2013 11 30 14 36 19.1 +41 19 09 0.4777 0.9182 67.7 83.6 8.0 Note: Given the report above the comet may be significantly brighter than the magnitudes in the above ephemeris produced by the Minor Planet Center. SUPERNOVA 2013fn IN IC 1342 (CATALINA REAL-TIME TRANSIENT SURVEY) 2013fn Sep 23.11 21 00 23.76 -14 29 52.2 18.5 25.9"W 7.1"S Jun Mo, Xulin Zhao: spectrum Sep 25 young type-Ia about 10 days before maximum. Guy M Hurst