December 29, 2011A20:44:53 UT Orbit-1 Orbital elements: C/2011 Y3 (Boattini) T 2011 Mar. 23.13896 TT Sato q 3.8683643 (2000.0) P Q Peri. 317.87959 +0.55307097 -0.50992844 Node 86.08774 +0.82360014 +0.45393397 e 1.0 Incl. 41.32967 -0.12567940 +0.73069620 From 41 observations 2011 Dec. 25-29, mean residual 0".60. Residuals in seconds of arc 111225 G96 0.5- 0.1+ 111226 H21 0.3+ 0.7+ 111227 H06 0.9- 0.3+ 111225 G96 0.5+ 0.6+ 111226 G96 0.4- 0.2- 111227 H06 0.7- 0.1- 111225 G96 1.0+ 0.0 111226 G96 0.4- 0.3- 111227 H06 0.7- 0.4- 111225 G96 0.9- 0.3+ 111226 G96 0.7- 0.1+ 111227 H06 0.2- 0.3+ 111225 G96 0.3+ 0.3- 111226 G96 0.3+ 0.1+ 111227 104 1.7- 1.2+ 111225 G96 0.5- 0.4- 111226 C32 0.3+ 0.9- 111227 104 0.8+ 0.9+ 111225 G96 0.3- 0.1+ 111226 C32 1.6+ 0.3+ 111227 104 1.2+ 0.4+ 111225 I89 1.5- 0.2+ 111226 C32 0.1+ 0.8- 111227 C32 0.3+ 0.1- 111225 I89 0.5- 0.0 111226 J87 0.3+ 0.2- 111227 C32 0.5- 0.3- 111225 204 1.0+ 0.5- 111226 J87 0.4+ 0.0 111227 C32 0.4- 0.1- 111225 204 0.4+ 0.2- 111226 J87 0.1- 0.0 111227 C32 1.0- 0.2- 111226 204 0.2- 0.5- 111227 291 0.9+ 0.3+ 111229 C10 0.2+ 0.8- 111226 H21 0.9+ 0.1- 111227 291 0.7+ 0.2+ 111229 C10 0.0 0.2- 111226 H21 0.3+ 0.1+ 111227 291 0.8+ 0.5+ 111229 C10 (2.8+ 0.1+) Orbit-2 Orbital elements: C/2011 Y3 (Boattini) T 2011 June 11.84029 TT Sato q 3.8127903 (2000.0) P Q n 0.01273051 Peri. 330.71383 +0.47295666 -0.68423370 a 18.1651476 Node 85.53795 +0.87712775 +0.30598955 e 0.7901041 Incl. 33.83394 +0.08342004 +0.66196271 P 77.42 From 41 observations 2011 Dec. 25-29, mean residual 0".59. Residuals in seconds of arc 111225 G96 0.5- 0.0 111226 H21 0.4+ 0.7+ 111227 H06 0.8- 0.3+ 111225 G96 0.4+ 0.5+ 111226 G96 0.4- 0.2- 111227 H06 0.7- 0.1- 111225 G96 0.9+ 0.1- 111226 G96 0.3- 0.3- 111227 H06 0.6- 0.4- 111225 G96 0.9- 0.2+ 111226 G96 0.7- 0.1+ 111227 H06 0.1- 0.3+ 111225 G96 0.3+ 0.4- 111226 G96 0.4+ 0.1+ 111227 104 1.9- 1.2+ 111225 G96 0.4- 0.5- 111226 C32 0.1+ 0.8- 111227 104 0.6+ 1.0+ 111225 G96 0.2- 0.0 111226 C32 1.4+ 0.4+ 111227 104 1.1+ 0.4+ 111225 I89 1.7- 0.3+ 111226 C32 0.0 0.7- 111227 C32 0.4+ 0.1- 111225 I89 0.7- 0.1+ 111226 J87 0.2+ 0.2- 111227 C32 0.3- 0.3- 111225 204 1.0+ 0.4- 111226 J87 0.4+ 0.0 111227 C32 0.2- 0.1- 111225 204 0.4+ 0.2- 111226 J87 0.2- 0.0 111227 C32 0.9- 0.2- 111226 204 0.1- 0.4- 111227 291 0.8+ 0.3+ 111229 C10 0.2+ 0.9- 111226 H21 1.0+ 0.1- 111227 291 0.6+ 0.1+ 111229 C10 0.1- 0.4- 111226 H21 0.4+ 0.1+ 111227 291 0.7+ 0.5+ 111229 C10 (2.8+ 0.0-) Orbit-3 Orbital elements: C/2011 Y3 (Boattini) T 2011 Sept. 23.03536 TT Sato q 3.6183838 (2000.0) P Q n 0.02589399 Peri. 347.36251 +0.28076685 -0.84454289 a 11.3154045 Node 84.88274 +0.91561029 +0.09322832 e 0.6802250 Incl. 27.24551 +0.28779816 +0.52730995 P 38.06 From 39 observations 2011 Dec. 25-29, mean residual 0".49. Residuals in seconds of arc 111225 G96 0.7- 0.1- 111226 H21 0.4+ 0.8+ 111227 H06 0.8- 0.3+ 111225 G96 0.2+ 0.5+ 111226 G96 0.4- 0.2- 111227 H06 0.6- 0.1- 111225 G96 0.8+ 0.2- 111226 G96 0.3- 0.3- 111227 H06 0.6- 0.4- 111225 G96 1.1- 0.2+ 111226 G96 0.6- 0.2+ 111227 H06 0.1- 0.3+ 111225 G96 0.3+ 0.4- 111226 G96 0.4+ 0.1+ 111227 104 (2.2- 1.3+) 111225 G96 0.4- 0.5- 111226 C32 0.2- 0.7- 111227 104 0.3+ 1.1+ 111225 G96 0.2- 0.1- 111226 C32 1.1+ 0.6+ 111227 104 0.8+ 0.5+ 111225 I89 (2.1- 0.4+) 111226 C32 0.3- 0.5- 111227 C32 0.5+ 0.0 111225 I89 1.1- 0.1+ 111226 J87 0.0 0.1- 111227 C32 0.2- 0.2- 111225 204 1.0+ 0.3- 111226 J87 0.2+ 0.1+ 111227 C32 0.2- 0.0 111225 204 0.4+ 0.1- 111226 J87 0.3- 0.1+ 111227 C32 0.8- 0.1- 111226 204 0.0 0.3- 111227 291 0.5+ 0.3+ 111229 C10 0.1- 0.9- 111226 H21 1.1+ 0.0 111227 291 0.4+ 0.2+ 111229 C10 0.3- 0.4- 111226 H21 0.5+ 0.2+ 111227 291 0.5+ 0.5+ 111229 C10 (2.6+ 0.0-) December 29, 2011A21:07:44 UT Orbit-1 Orbital elements: C/2011 Y3 (Boattini) T 2011 Mar. 18.9616 TT Sato q 4.136194 (2000.0) P Q Peri. 320.7857 +0.4968084 -0.5067853 Node 86.3007 +0.8604125 +0.3937446 e 1.0 Incl. 44.9098 -0.1134537 +0.7668989 From 39 observations 2011 Dec. 25-27, mean residual 0".59. Orbit-2 Orbital elements: C/2011 Y3 (Boattini) T 2011 July 12.7491 TT Sato q 4.059705 (2000.0) P Q n 0.0153203 Peri. 337.9317 +0.3735745 -0.7217283 a 16.055516 Node 85.6963 +0.9142067 +0.1801011 e 0.747146 Incl. 35.7576 +0.1570615 +0.6683351 P 64.3 From 39 observations 2011 Dec. 25-27, mean residual 0".58. --