Comet P/2001 BB50 = 2014 K1 (LINEAR-NEAT) R. Wainscoatの通報によると、5月17.3日UT、Haleakalaにある1.8-m "Pan-STARRS 1" Ritchey- Chretien望遠鏡で得た画像から20.6-20.7等のP/2001 BB50 (LINEAR-NEAT)を検出した。 G. V. Williamsは小惑星センターのアーカイブにある3月1日に、A. WulffがSATINO Remote天文 台の0.60-m f/3.2反射望遠鏡で得た観測が最も早いことを確認した。 検出位置は次のとおり、 2014 UT R.A. (2000) Decl. Mag. Observer Mar. 1.92807 7 53 53.44 +30 36 02.0 20.7 Wulff 1.96152 7 53 52.81 +30 35 53.4 20.8 " 1.99283 7 53 52.23 +30 35 44.8 20.3 " May 17.27689 8 43 57.42 +21 51 32.4 20.7 Pan-STARRS 17.28181 8 43 57.83 +21 51 29.4 20.6 " 17.28667 8 43 58.21 +21 51 26.7 20.6 " 17.29157 8 43 58.63 +21 51 24.1 20.6 " ICQ 2003 Comet Handbook (p. H12)の中野主一氏の予報に対し、Delta(T)は、-1.74 dayであった。 連結軌道要素、位置推算表は次のとおり、 Orbital elements: P/2001 BB50 = 2014 K1 (LINEAR-NEAT) Epoch 2001 Jan. 11.0 TT = JDT 2451920.5 T 2001 Jan. 30.44050 TT MPC q 2.3468281 (2000.0) P Q n 0.07283592 Peri. 189.34921 -0.99573673 +0.09125584 a 5.6785698 Node 355.81573 -0.06814386 -0.82598331 e 0.5867220 Incl. 10.61727 -0.06216729 -0.55625888 P 13.5 From 99 observations 2001 Jan. 21-2014 May 17, mean residual 0".6. P/2001 BB50 = 2014 K1 (LINEAR-NEAT) Epoch 2014 Sept. 20.0 TT = JDT 2456920.5 T 2014 Sept. 1.93323 TT MPC q 2.3616568 (2000.0) P Q n 0.07202165 Peri. 193.54275 -0.99604230 +0.08447168 a 5.7212903 Node 351.16271 -0.05503683 -0.83041235 e 0.5872161 Incl. 10.36682 -0.06979027 -0.55070851 P 13.7 From 99 observations 2001 Jan. 21-2014 May 17, mean residual 0".6. P/2001 BB50 = 2014 K1 (LINEAR-NEAT) Epoch 2028 May 29.0 TT = JDT 2461920.5 T 2028 May 16.02942 TT MPC q 2.3797060 (2000.0) P Q n 0.07111070 Peri. 193.23799 -0.99654373 +0.07832072 a 5.7700478 Node 351.11414 -0.04993679 -0.83114931 e 0.5875760 Incl. 10.32489 -0.06638456 -0.55050585 P 13.9 From 99 observations 2001 Jan. 21-2014 May 17, mean residual 0".6. P/2001 BB50 = 2014 K1 (LINEAR-NEAT) Epoch 2014 May 23.0 TT = JDT 2456800.5 T 2014 Sept. 1.90804 TT MPC q 2.3616754 (2000.0) P Q n 0.07196678 Peri. 193.53482 -0.99605330 +0.08434315 a 5.7241981 Node 351.16327 -0.05493258 -0.83042616 e 0.5874225 Incl. 10.36608 -0.06971545 -0.55070738 P 13.7 From 99 observations 2001 Jan. 21-2014 May 17, mean residual 0".6. Ephemeris: P/2001 BB50 (LINEAR-NEAT) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2014 04 21 08 12 42.2 +25 29 31 2.4334 2.6185 89.1 22.6 19.1 ... 2014 05 06 08 29 17.4 +23 30 06 2.5667 2.5676 78.7 22.7 19.1 ... 2014 05 14 08 39 31.9 +22 21 00 2.6362 2.5423 73.6 22.4 19.2 ... 2014 05 20 08 47 43.9 +21 26 33 2.6870 2.5243 69.9 22.1 19.2 2014 05 21 08 49 08.2 +21 17 14 2.6954 2.5213 69.3 22.0 19.2 2014 05 22 08 50 33.2 +21 07 52 2.7037 2.5184 68.7 22.0 19.2 ... 2014 05 28 08 59 15.9 +20 10 14 2.7528 2.5015 65.1 21.6 19.2 ... 2014 06 05 09 11 23.5 +18 49 36 2.8160 2.4802 60.6 20.9 19.2 ... 2014 06 20 09 35 22.6 +16 06 39 2.9263 2.4445 52.5 19.3 19.2 Computer: Williams