May 31, 2011A15:59:06 UT Orbital elements: Comet P/2011 JB15 (Spacewatch-Boattini) T 2012 Jan. 15.61318 TT Sato q 5.0336916 (2000.0) P Q n 0.04954882 Peri. 110.12550 -0.08203076 +0.98608912 a 7.3414275 Node 153.85149 -0.99214532 -0.06705294 e 0.3143443 Incl. 19.14966 -0.09443840 -0.15209256 P 19.89 From 70 observations 2011 May 8-31, mean residual 0".57. Residuals in seconds of arc 110508 691 0.3- 0.1+ 110529 G96 0.5- 0.4- 110530 H21 0.2- 0.1- 110508 691 0.0 0.1- 110529 G96 0.2- 0.3- 110530 H06 0.4- 0.6+ 110508 691 0.2- 0.1- 110529 H10 1.3+ 0.1+ 110530 H21 0.1+ 0.0 110512 691 0.1+ 0.3+ 110529 H10 0.0 0.2+ 110530 H21 0.0 0.4+ 110512 691 0.3+ 0.0 110529 H10 1.9- 0.1+ 110530 H21 0.0 0.1+ 110512 691 0.2+ 0.0 110529 H06 1.4- 1.9+ 110530 235 0.7- 1.0- 110528 G96 0.5+ 0.1+ 110529 H06 1.3- 1.1+ 110530 235 0.7- 0.8- 110528 G96 0.9+ 0.4+ 110529 104 0.1- 0.1- 110530 235 0.3- 0.1- 110528 G96 0.2+ 0.5- 110529 104 0.4- 0.3+ 110530 470 0.6+ 0.3+ 110528 G96 0.7+ 0.3+ 110529 J04 0.5+ 0.1+ 110530 470 1.0+ 0.3+ 110528 G96 0.9- 0.5- 110529 J04 0.6+ 0.0 110531 J95 0.6- 0.0 110528 G96 0.5- 0.1- 110529 J04 0.4+ 0.3+ 110531 J95 0.5+ 0.0 110528 G96 0.3- 0.3- 110530 470 0.9+ 0.8+ 110531 H21 0.3- 0.4- 110528 G96 0.4- 0.1- 110530 204 0.4- 0.9- 110531 H21 0.1- 0.4- 110528 595 0.3- 0.1+ 110530 470 0.3+ 0.8+ 110531 H21 0.4- 0.4- 110528 A81 0.9- 0.5- 110530 204 0.2+ 0.4- 110531 H21 0.1- 0.3- 110528 A81 0.6+ 1.0- 110530 204 0.2+ 0.1- 110531 H01 0.6+ 0.3+ 110528 A81 1.8+ 1.7- 110530 H06 0.5+ 1.1+ 110531 H01 0.8+ 0.3+ 110528 595 0.1+ 0.3+ 110530 H06 0.6+ 0.3+ 110531 H01 0.7+ 0.3+ 110529 H10 0.7- 0.3+ 110530 H06 0.3+ 0.2+ 110531 H01 0.8+ 0.4+ 110529 H10 0.0 0.0 110530 H06 0.9- 0.0 110531 682 0.4- 0.2- 110529 H10 0.2+ 0.2- 110530 H21 0.2- 0.3- 110531 682 0.7- 0.5- 110529 G96 0.4+ 0.3- 110530 H21 0.2- 0.0 110529 G96 0.1- 0.3- 110530 H21 0.1+ 0.1+ May 31, 2011A22:07:20 UT Orbital elements: TBKQ01 T 2011 Apr. 23.02270 TT Sato q 3.3259979 (2000.0) P Q n 0.01285524 Peri. 167.43549 -0.21337834 -0.55120433 a 18.0474505 Node 70.84186 -0.95389126 +0.29594081 e 0.8157082 Incl. 121.35962 -0.21109512 -0.78012360 P 76.67 From 58 observations 2011 May 26-31, mean residual 0".56. --