Comet P/2005 JQ5 = 2014 G2 (Catalina) M. Masek (Liberec、チェコ共和国)は、4月9-10日UT、0.3-m f/10 反射望遠鏡で得た 画像から18.7-19.4等のP/2005 JQ5 (Catalina)を検出した。 この彗星は40"の淡いコマに中央集光があり、尾はない。 検出位置は次のとおり、 2014 UT R.A. (2000) Decl. Mag. Observer Apr. 9.38799 20 36 02.98 -15 22 31.6 18.7 Masek 9.39693 20 36 06.17 -15 22 23.6 18.7 " 9.40486 20 36 08.98 -15 22 16.8 18.7 " 10.37102 20 41 56.45 -15 06 44.0 19.3 " 10.38719 20 42 02.21 -15 06 27.8 19.2 " 10.40400 20 42 08.17 -15 06 11.5 19.4 " MPC 75732の中野主一氏の予報に対し、Delta(T)は、-0.10 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/2005 JQ5 (Catalina) Epoch 2005 July 9.0 TT = JDT 2453560.5 T 2005 July 28.03406 TT MPC q 0.8255909 (2000.0) P Q n 0.22284713 Peri. 222.68363 +0.74614668 +0.65842075 a 2.6944162 Node 95.86141 -0.58095107 +0.71631180 e 0.6935919 Incl. 5.69581 -0.32520915 +0.23104010 P 4.42 From 558 observations 2005 May 6-2014 Apr. 10, mean residual 0".5. P/2005 JQ5 (Catalina) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2009 Dec. 28.79920 TT MPC q 0.8230894 (2000.0) P Q n 0.22316737 Peri. 222.74287 +0.74649277 +0.65802883 a 2.6918380 Node 95.83241 -0.58055896 +0.71660430 e 0.6942277 Incl. 5.69533 -0.32511510 +0.23124953 P 4.42 From 558 observations 2005 May 6-2014 Apr. 10, mean residual 0".5. P/2005 JQ5 (Catalina) Epoch 2014 May 23.0 TT = JDT 2456800.5 T 2014 May 29.87908 TT MPC q 0.8259015 (2000.0) P Q n 0.22285916 Peri. 222.73982 +0.74617597 +0.65839705 a 2.6943193 Node 95.80766 -0.58091007 +0.71629396 e 0.6934656 Incl. 5.69160 -0.32521519 +0.23116291 P 4.42 From 558 observations 2005 May 6-2014 Apr. 10, mean residual 0".5. P/2005 JQ5 (Catalina) Epoch 2018 Nov. 18.0 TT = JDT 2458440.5 T 2018 Nov. 2.07931 TT MPC q 0.8328175 (2000.0) P Q n 0.22223350 Peri. 222.85449 +0.74596351 +0.65867446 a 2.6993739 Node 95.67372 -0.58114821 +0.71596746 e 0.6914775 Incl. 5.67606 -0.32527710 +0.23138398 P 4.44 From 558 observations 2005 May 6-2014 Apr. 10, mean residual 0".5. Ephemeris: P/2005 JQ5 (Catalina) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2014 03 11 18 06 15.0 -18 31 06 1.2195 1.4138 78.7 43.5 17.9 ... 2014 03 26 19 15 44.7 -17 55 59 1.0298 1.2630 77.1 50.3 17.1 ... 2014 04 03 19 58 53.8 -16 48 09 0.9534 1.1841 74.6 54.5 16.6 ... 2014 04 09 20 33 43.6 -15 28 39 0.9102 1.1265 72.0 57.7 16.3 2014 04 10 20 39 42.1 -15 12 51 0.9043 1.1170 71.6 58.3 16.3 2014 04 11 20 45 43.0 -14 56 20 0.8987 1.1077 71.1 58.8 16.2 ... 2014 04 17 21 22 28.8 -13 02 13 0.8736 1.0529 67.8 62.0 15.9 ... 2014 04 25 22 12 13.7 -09 54 35 0.8627 0.9851 63.1 65.6 15.6 ... 2014 05 10 23 41 47.9 -03 02 29 0.9088 0.8825 54.5 68.6 15.2 Computer: Williams (CBET 3852、MPEC 2014-G70)