2023 May 03‎, 06:16:48 UT Orbital elements: P/2018 HT3 (NEOWISE) = SWAN23G Epoch 2023 Apr. 6.0 TT = JDT 2460040.5 T 2023 Mar. 29.61996 TT Sato q 0.5189588 (2000.0) P Q n 0.19206427 Peri. 216.36730 -0.68755999 -0.54826442 a 2.9751235 Node 283.21154 +0.72612651 -0.52026902 e 0.8255673 Incl. 29.27747 -0.00124692 -0.65477193 P 5.13 From 67 observations 2012 Sept. 6-2023 Apr. 30, mean residual 0".58. Epoch 2018 Feb. 11.0 TT = JDT 2458160.5 T 2018 Feb. 7.98124 TT Sato q 0.5305989 (2000.0) P Q n 0.19127256 Peri. 215.73509 -0.68966018 -0.54307500 a 2.9833275 Node 284.04232 +0.72413307 -0.51754659 e 0.8221453 Incl. 29.58750 -0.00035600 -0.66122240 P 5.15 Epoch 2012 Dec. 19.0 TT = JDT 2456280.5 T 2012 Dec. 13.08875 TT Sato q 0.5302771 (2000.0) P Q n 0.19138057 Peri. 215.64665 -0.68963688 -0.54274935 a 2.9822050 Node 284.12931 +0.72415535 -0.51692814 e 0.8221862 Incl. 29.62725 -0.00005485 -0.66197314 P 5.15 Epoch 2023 May 16.0 TT = JDT 2460080.5 T 2023 Mar. 29.61998 TT Sato q 0.5189590 (2000.0) P Q n 0.19206078 Peri. 216.36823 -0.68755661 -0.54826412 a 2.9751596 Node 283.21058 +0.72612969 -0.52027094 e 0.8255694 Incl. 29.27769 -0.00125472 -0.65477065 P 5.13 Residuals in seconds of arc (or two decimals in units of degrees) 120906 F51 0.1+ 0.4+ 180607 474 0.3+ 0.1- 230419 I47 0.2+ 0.5+ 120906 F51 0.2+ 0.2+ 180607 474 0.3+ 0.1+ 230419 I47 0.3- 1.4+ 121006 F51 0.3+ 0.0 180607 474 0.4+ 0.0 230419 I47 0.3- 0.4+ 121006 F51 0.6+ 0.2+ 180607 474 0.5+ 0.1- 230420 X07 0.3- 0.5+ 121106 I41 0.2+ 0.2+ 180608 807 0.6+ 0.1- 230420 X07 0.2- 0.2- 121106 I41 0.5+ 0.4+ 180608 807 0.4+ 0.2- 230420 X07 0.0 0.9+ 130618 F51 0.1- 0.5- 180608 807 0.5+ 0.1- 230420 L81 0.3+ 0.5+ 130618 F51 0.1- 0.8- 221130 291 0.1- 0.7+ 230420 L81 0.3- 0.9+ 180422 C51 0.4- 0.3- 221130 291 0.5- 0.4+ 230420 I47 0.2- 0.7+ 180423 C51 0.5- 0.3- 221130 291 0.4+ 0.9+ 230420 I47 0.3- 0.0 180423 C51 0.6- 0.6+ 230405 249(0.58+ 0.17+)X 230422 W88 0.6+ 0.5- 180423 C51 0.8+ 0.7+ 230406 249(0.57+ 0.14-)X 230422 W88 0.5+ 0.3- 180423 C51 1.7- 0.1+ 230411 249(0.16+ 0.45-)X 230423 W88 0.3+ 1.0- 180423 C51 0.4- 0.3+ 230413 249(0.09- 1.01-)X 230423 W88 0.3+ 1.0- 180423 C51 0.4- 0.0 230414 249(0.08- 0.38-)X 230424 I47 0.4+ 0.2- 180423 C51 0.0 1.2- 230415 249(0.10+ 0.24-)X 230424 W88 0.2+ 0.8- 180423 C51 1.4- 1.7+ 230416 249(0.30+ 0.37-)X 230424 I47 0.4- 0.8+ 180512 807 0.3- 0.0 230418 247 0.4+ 0.4- 230424 W88 0.5- 0.7- 180512 807 0.6- 0.1+ 230418 247 0.2- 1.5+ 230425 M21 0.6+ 1.2- 180512 807 0.7- 0.3+ 230418 247 0.9+ 0.4+ 230425 M21 0.6- 0.1- 180515 T12 0.2- 0.3+ 230418 247 0.3+ 0.2- 230425 M21 0.8+ 0.9- 180516 807 0.3- 0.1+ 230418 247 (1.0- 2.3-) 230425 M21 0.7- 0.2- 180516 807 0.2- 0.0 230418 247 1.5- 1.6+ 230427 Q62 0.2+ 0.0 180516 807 0.0 0.1+ 230418 247 (6.5+ 7.5+) 230427 Q62 0.2+ 0.9- 180607 807 0.2+ 0.3- 230418 247 (1.4+ 5.2+) 230430 I47 0.2+ 0.2- 180607 807 0.4+ 0.6- 230418 247 (3.2+ 0.8-) 230430 I47 0.4- 0.6- 2023 April 20, 02:59:07 UT Orbital elements: 2018 HT3 = SWAN23G Epoch 2023 Apr. 6.0 TT = JDT 2460040.5 T 2023 Mar. 29.62002 TT q 0.5189582 (2000.0) P Q n 0.19206425 Peri. 216.36723 -0.68755975 -0.54826494 a 2.9751237 Node 283.21157 +0.72612673 -0.52026847 e 0.8255675 Incl. 29.27745 -0.00124615 -0.65477192 P 5.13 From 42 observations 2012 Sep. 6-2023 Apr. 19, mean residual 0".56. Epoch 2023 May 16.0 TT = JDT 2460080.5 T 2023 Mar. 29.62004 TT Sato q 0.5189584 (2000.0) P Q n 0.19206076 Peri. 216.36816 -0.68755638 -0.54826464 a 2.9751597 Node 283.21062 +0.72612991 -0.52027039 e 0.8255696 Incl. 29.27768 -0.00125395 -0.65477065 P 5.13 2023 April 19, 13:57:05 UT Orbital elements: SWAN23G T 2023 Apr. 2.7835 TT Sato q 0.524072 (2000.0) P Q Peri. 230.9217 -0.6562509 -0.4590424 Node 273.2872 +0.7299567 -0.5871822 e 1.0 Incl. 36.8578 -0.1910445 -0.6667062 From 11 observations 2023 Apr. 11-18, mean residual 74".53. Residuals in seconds of arc (or two decimals in units of degrees) 230405 249(0.22+ 0.98+)X 230416 249(0.29+ 0.26-)X 230418 247 38.9- 50.7+ 230406 249(0.23+ 0.62+)X 230418 247 39.0- 51.5+ 230418 247 47.3+ 54.4- 230411 249 73.7- 70.2+ X 230418 247 39.4- 53.0+ 230418 247 43.0+ 57.8- 230413 249(0.21- 0.68-)X 230418 247 37.9- 51.5+ 230418 247 45.6+ 64.9- 230414 249(0.16- 0.12-)X 230418 247 37.6- 49.5+ 230415 249 0.05+ 0.05- X 230418 247 38.7- 47.1+ 2023 April 18‎, 22:58:59 UT Orbital elements: SWAN23G T 2023 Apr. 4.47018 TT Sato q 0.539782 (2000.0) P Q Peri. 218.9026 -0.4986508 -0.2085338 Node 284.8980 +0.8346003 -0.3776174 e 1.0 Incl. 60.5296 -0.2340722 -0.9021745 From 5 observations 2023 Apr. 5-15, mean residual 242". 4. --