Comet P/2003 U3 = 2014 L1 (NEAT) Erwin Schwabの通報によると6月1日UTと2日、P. RuizがEuropean Space Agency's Optical Ground Stationの1.0-m f/4.4望遠鏡で得た画像 (測定はSchwabのほかD. Koschny, M. Micheli, A. KnoefelとM. Buschが支援)から19.4-19.9等のP/2003 U3を検出した。 この天体は、コマとp.a. 250°に15"-20"の尾が見えた。 検出位置は次のとおり、 2014 UT R.A. (2000) Decl. Mag. Observer June 1.16958 22 07 01.89 -17 31 55.9 19.7 Ruiz 1.17711 22 07 02.26 -17 31 53.9 19.4 " 1.18466 22 07 02.68 -17 31 51.6 19.7 " 2.15897 22 07 53.40 -17 27 24.3 19.9 " 2.17062 22 07 54.05 -17 27 21.4 19.9 " 2.17852 22 07 54.42 -17 27 19.0 19.4 " MPC 75734のG. V. Williamsの予報に対し、Delta(T)は、-1.80 days、ICQの 2013 Comet Handbook の中野主一氏の予報に対しDelta(T)は、-1.60 daysであった。 連結軌道要素、位置推算表は次のとおり、 Orbital elements: P/2003 U3 = 2014 L1 (NEAT) Epoch 2003 May 1.0 TT = JDT 2452760.5 T 2003 Apr. 23.11725 TT MPC q 2.4960348 (2000.0) P Q n 0.08602837 Peri. 356.27149 +0.96437686 +0.26337327 a 5.0820810 Node 348.36792 -0.23941992 +0.82924048 e 0.5088558 Incl. 7.04650 -0.11249612 +0.49294497 P 11.5 From 124 observations 2003 Oct. 17-2014 June 2, mean residual 0".6. P/2003 U3 = 2014 L1 (NEAT) Epoch 2014 Oct. 30.0 TT = JDT 2456960.5 T 2014 Oct. 13.58461 TT MPC q 2.4877604 (2000.0) P Q n 0.08644182 Peri. 357.01502 +0.96617067 +0.25665890 a 5.0658630 Node 348.02137 -0.23402442 +0.83124563 e 0.5089168 Incl. 7.00373 -0.10838268 +0.49310943 P 11.4 From 124 observations 2003 Oct. 17-2014 June 2, mean residual 0".6. P/2003 U3 = 2014 L1 (NEAT) Epoch 2026 Feb. 9.0 TT = JDT 2461080.5 T 2026 Feb. 19.95376 TT MPC q 2.4683173 (2000.0) P Q n 0.08716399 Peri. 357.07441 +0.96592577 +0.25755105 a 5.0378433 Node 347.90786 -0.23491304 +0.83090720 e 0.5100448 Incl. 7.01671 -0.10864289 +0.49321463 P 11.3 From 124 observations 2003 Oct. 17-2014 June 2, mean residual 0".6. P/2003 U3 = 2014 L1 (NEAT) Epoch 2014 May 23.0 TT = JDT 2456800.5 T 2014 Oct. 13.59518 TT MPC q 2.4877367 (2000.0) P Q n 0.08641085 Peri. 357.01790 +0.96618930 +0.25658914 a 5.0670735 Node 348.02265 -0.23396305 +0.83126557 e 0.5090388 Incl. 7.00340 -0.10834910 +0.49311212 P 11.4 From 124 observations 2003 Oct. 17-2014 June 2, mean residual 0".6. Ephemeris: P/2003 U3 (NEAT) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2014 05 03 21 35 34.3 -20 05 18 2.7260 2.7832 82.7 21.1 20.1 ... 2014 05 18 21 53 07.1 -18 42 21 2.4936 2.7353 92.7 21.7 19.9 ... 2014 05 26 22 01 19.8 -18 01 20 2.3723 2.7112 98.3 21.7 19.7 ... 2014 06 01 22 06 52.8 -17 32 40 2.2832 2.6937 102.7 21.5 19.6 2014 06 02 22 07 45.0 -17 28 05 2.2686 2.6908 103.4 21.5 19.6 2014 06 03 22 08 36.3 -17 23 34 2.2540 2.6880 104.1 21.5 19.6 ... 2014 06 09 22 13 22.7 -16 57 48 2.1679 2.6713 108.6 21.1 19.4 ... 2014 06 17 22 18 44.9 -16 27 20 2.0576 2.6500 114.8 20.4 19.3 ... 2014 07 02 22 25 20.7 -15 44 09 1.8683 2.6130 127.3 18.0 19.0 Computer: Williams (CBET 3887、MPEC 2014-L12)