Comet P/2008 J2 = 2014 D1 (Beshore) D. T. Durig (South大学, Sewanee, テネシー州)の通報によると、2月27-28日、M. R. Lebow, J. F. North, A. M. Kops, B. B. Goodsonと彼が0.3-m f/2.5 Schmidt-Cassegrain 反射望遠鏡 で得た画像から19.9-20.4等のP/2008 J2 (Beshore)を検出した。 G. V. Williamsはその後、1月2日のE. J. ChristensenがMt Lemmonで得ていた検出前の観測を確認 した。 検出位置は次のとおり、 2014 UT R.A. (2000) Decl. Mag. Observer Jan. 2.50566 12 28 35.66 + 8 27 07.4 Christensen 2.51170 12 28 36.02 + 8 27 06.3 20.8 " 2.51776 12 28 36.31 + 8 27 05.7 21.0 " 2.52380 12 28 36.58 + 8 27 06.2 21.7 " Feb. 27.40087 12 47 59.74 +11 44 41.3 19.9 Durig 27.40843 12 47 59.59 +11 44 44.8 19.9 " 27.41599 12 47 59.45 +11 44 48.8 20.2 " 27.42355 12 47 59.29 +11 44 51.4 20.2 " 27.43111 12 47 59.18 +11 44 54.9 20.0 " 28.27855 12 47 43.84 +11 50 51.7 20.4 " 28.29349 12 47 43.52 +11 50 58.1 20.3 " 28.30842 12 47 43.20 +11 51 05.3 20.1 " MPC 75733のG. V. Williamsの予報に対し、Delta(T)は、-0.3 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/2008 J2 (Beshore) Epoch 2008 Apr. 4.0 TT = JDT 2454560.5 T 2008 Mar. 20.98945 TT MPC q 2.4102956 (2000.0) P Q n 0.15181919 Peri. 131.85146 -0.62897281 +0.75714810 a 3.4800456 Node 98.29851 -0.75561523 -0.54200595 e 0.3073954 Incl. 10.26931 -0.18286289 -0.36463174 P 6.49 From 455 observations 2008 May 6-2014 Feb. 28, mean residual 0".5. P/2008 J2 (Beshore) Epoch 2014 Aug. 11.0 TT = JDT 2456880.5 T 2014 Aug. 29.97944 TT MPC q 2.3462218 (2000.0) P Q n 0.15421389 Peri. 132.20118 -0.63210147 +0.75425515 a 3.4439253 Node 97.70889 -0.75324411 -0.54429558 e 0.3187361 Incl. 10.32516 -0.18185445 -0.36720769 P 6.39 From 455 observations 2008 May 6-2014 Feb. 28, mean residual 0".5. P/2008 J2 (Beshore) Epoch 2021 Jan. 26.0 TT = JDT 2459240.5 T 2021 Jan. 22.88533 TT MPC q 2.3433952 (2000.0) P Q n 0.15433741 Peri. 132.50514 -0.62874428 +0.75703773 a 3.4420876 Node 97.65951 -0.75564000 -0.54087622 e 0.3191936 Incl. 10.32852 -0.18354514 -0.36653347 P 6.39 From 455 observations 2008 May 6-2014 Feb. 28, mean residual 0".5. P/2008 J2 (Beshore) Epoch 2013 Nov. 4.0 TT = JDT 2456600.5 T 2014 Aug. 29.89291 TT MPC q 2.3465720 (2000.0) P Q n 0.15421095 Peri. 132.16756 -0.63253707 +0.75388973 a 3.4439690 Node 97.70940 -0.75292998 -0.54473113 e 0.3186431 Incl. 10.32521 -0.18164058 -0.36731221 P 6.39 From 455 observations 2008 May 6-2014 Feb. 28, mean residual 0".5. Ephemeris: P/2008 J2 (Beshore) Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 2014 01 29 12 46 09.1 +09 03 37 2.0383 2.6810 120.9 18.4 20.8 ... 2014 02 13 12 49 42.5 +10 12 22 1.8505 2.6408 134.8 15.4 20.6 ... 2014 02 21 12 49 23.4 +11 01 15 1.7659 2.6201 142.4 13.3 20.4 ... 2014 02 27 12 48 06.8 +11 41 55 1.7110 2.6048 148.1 11.6 20.3 2014 02 28 12 47 49.0 +11 48 56 1.7026 2.6023 149.0 11.3 20.3 2014 03 01 12 47 29.7 +11 55 59 1.6944 2.5998 149.9 11.0 20.3 ... 2014 03 07 12 45 05.7 +12 38 54 1.6503 2.5849 155.2 9.3 20.2 ... 2014 03 15 12 40 46.9 +13 35 14 1.6053 2.5656 160.9 7.3 20.1 ... 2014 03 30 12 30 27.5 +15 03 57 1.5646 2.5310 161.3 7.2 20.0 Computer: Williams (CBET 3813、MPEC 2014-D59)