May 30, 2015A20:14:54 UT Orbital elements: C/2015 J1 (PANSTARRS) = P10kZgn Epoch 2015 June 27.0 TT = JDT 2457200.5 T 2014 July 8.36517 TT Sato q 6.0299064 (2000.0) P Q n 0.00053631 Peri. 316.51680 -0.51989537 -0.56264586 a 150.0349851 Node 220.14601 -0.19410395 -0.65494940 e 0.9598100 Incl. 94.49065 -0.83188488 +0.50445111 P1837.76 From 38 observations 2015 May 14-23, mean residual 0".40. /a = +0.0066651, Q = 294.04 AU, L = 224.4, B = -43.3. Residuals in seconds of arc 150514 F51 0.1- 0.0 150515 Q62 0.1+ 0.3- 150518 H01 0.1+ 0.5+ 150514 F51 0.1+ 0.3+ 150515 Q62 0.6+ 0.3+ 150518 H01 0.1+ 0.4+ 150514 F51 0.0 0.1+ 150516 W96 0.7- 0.0 150518 291 0.7+ 0.5- 150515 W96 0.6- 0.2- 150516 W96 0.1- 0.5- 150518 291 0.0 0.1+ 150515 W96 0.6+ 0.3- 150516 W96 0.1- 0.1- 150518 291 0.6- 1.1- 150515 W96 0.3- 0.5+ 150516 474 0.5+ 0.2- 150518 F51 0.1+ 0.5+ 150515 568 0.0 0.5+ 150516 474 0.0 0.1- 150518 F51 0.0 0.6+ 150515 568 0.1- 0.4+ 150516 474 0.5+ 0.4- 150518 F51 0.1+ 0.5+ 150515 474 0.0 1.0- 150516 474 0.0 0.1- 150518 F51 0.1+ 0.5+ 150515 474 0.3+ 0.3- 150518 W96 1.2- 1.2- 150523 F51 0.0 0.1- 150515 474 0.1+ 0.2+ 150518 W96 0.0 0.0 150523 F51 0.0 0.0 150515 474 0.3- 0.6+ 150518 H01 0.0 0.2+ 150523 F51 0.0 0.0 150515 Q62 0.0 0.3- 150518 H01 0.1+ 0.4+ May 18, 2015A13::02:32 UT Orbit-1 Orbital elements: P10kZgn T 2014 Aug. 12.2285 TT Sato q 6.153822 (2000.0) P Q Peri. 319.8895 -0.5486294 -0.5394648 Node 219.9012 -0.2367238 -0.6324837 e 1.0 Incl. 95.2883 -0.8018526 +0.5558255 From 31 observations 2015 May 14-18, mean residual 0".42. Orbit-2 Orbital elements: P10kZgn T 2014 Aug. 14.59658 TT Sato q 6.1507532 (2000.0) P Q z +0.0028964 Peri. 320.17654 -0.55230900 -0.53431094 Node 219.97090 -0.23861980 -0.63414836 e 0.9821850 Incl. 95.05922 -0.79875864 +0.55889862 From 31 observations 2015 May 14-18, mean residual 0".42. --