2023 January 27, 09:23:53 UT Orbital elements: P/2021 L4 = 2012 Q3 (PANSTARRS) Epoch 2025 May 5.0 TT = JDT 2460800.5 T 2025 Apr. 15.02580 TT Sato q 2.8022471 (2000.0) P Q n 0.17460807 Peri. 233.02214 -0.41001505 -0.87413548 a 3.1702476 Node 243.14770 +0.90174900 -0.34567127 e 0.1160794 Incl. 16.96573 +0.13688094 -0.34117230 P 5.64 From 49 observations 2012 Aug. 18-2022 Sept. 17, mean residual 0".24. Epoch 2023 June 25.0 TT = JDT 2460120.5 T 2025 Apr. 20.19760 TT Sato q 2.7935679 (2000.0) P Q n 0.17484050 Peri. 234.27211 -0.42967703 -0.86463547 a 3.1674373 Node 243.19173 +0.89367009 -0.36588496 e 0.1180353 Incl. 16.96001 +0.12935002 -0.34428723 P 5.64 Epoch 2019 Aug. 25.0 TT = JDT 2458720.5 T 2019 Sept. 5.67195 TT Sato q 2.7899369 (2000.0) P Q n 0.17485259 Peri. 234.92097 -0.44009603 -0.85934968 a 3.1672913 Node 243.23503 +0.88916375 -0.37657832 e 0.1191410 Incl. 16.95984 +0.12531286 -0.34598683 P 5.64 Epoch 2014 Jan. 23.0 TT = JDT 2456680.5 T 2014 Jan. 19.07355 TT Sato q 2.7846286 (2000.0) P Q n 0.17477714 Peri. 235.29316 -0.44653568 -0.85595930 a 3.1682027 Node 243.29376 +0.88629641 -0.38313969 e 0.1210699 Incl. 16.96446 +0.12281922 -0.34718533 P 5.64 Epoch 2022 Sept. 18.0 TT = JDT 2459840.5 T 2025 Apr. 21.16620 TT Sato q 2.7906616 (2000.0) P Q n 0.17499826 Peri. 234.51488 -0.43373393 -0.86258857 a 3.1655334 Node 243.21795 +0.89193037 -0.37003005 e 0.1184229 Incl. 16.96018 +0.12780885 -0.34499090 P 5.63 Residuals in seconds of arc 120818 T14 0.0 0.1+ 210614 568 0.2- 0.1+ 210726 250 0.2- 0.2+ 120818 T14 0.0 0.2+ 210615 Q62 0.1- 0.7- 210726 250 0.3- 0.1+ 120828 T14 0.1- 0.1+ 210615 Q62 0.4- 0.3- 210902 309 0.2- 0.3+ 120912 T14 0.0 0.2- 210616 Y00 1.0+ 0.4- 210902 309 0.2+ 0.2+ 120914 T14 0.1+ 0.1- 210616 Y00 0.5+ 0.5- 210902 309 0.0 0.1+ 210602 691 0.6+ 0.4- 210616 Y00 0.2+ 0.3- 220525 568 0.0 0.1- 210602 691 0.2- 0.6- 210626 Z23 0.4- 0.2+ 220525 568 0.0 0.1+ 210602 691 0.4- 0.2- 210626 Z23 0.3+ 0.0 220720 568 0.0 0.0 210609 F51 0.1- 0.4+ 210627 Z23 0.2- 0.1+ 220720 568 0.1+ 0.0 210609 F51 0.2+ 0.0 210627 Z23 0.2+ 0.0 220720 568 0.0 0.2- 210609 F51 0.3+ 0.0 210708 309 0.1- 0.0 220823 568 0.0 0.1- 210609 F51 0.2+ 0.2+ 210708 309 0.3- 0.0 220823 568 0.0 0.1- 210614 F51 0.1+ 0.1+ 210712 309 0.1- 0.3+ 220917 568 0.0 0.1+ 210614 F51 0.1- 0.2+ 210712 309 0.1- 0.2+ 220917 568 0.1- 0.0 210614 F51 0.2+ 0.2+ 210726 250 0.2- 0.2+ 220917 568 0.0 0.0 210614 568 0.2- 0.2+ 210726 250 0.2- 0.2+ 210614 568 0.2- 0.1+ 210726 250 0.1- 0.2+ 2021 June 23, 06:09:30 UT Orbital elements: P/2021 L4 (PANSTARRS) Epoch 2019 Oct. 4.0 TT = JDT 2458760.5 T 2019 Sept. 19.69017 TT Sato q 2.7513224 (2000.0) P Q n 0.17462193 Peri. 236.01836 -0.45544838 -0.85061770 a 3.1700798 Node 243.20601 +0.88258643 -0.39274809 e 0.1320968 Incl. 17.11608 +0.11665315 -0.34956897 P 5.64 From 18 observations 2021 June 2-16, mean residual 0".29. Epoch 2021 July 5.0 TT = JDT 2459400.5 T 2019 Sept. 18.66400 TT Sato q 2.7508072 (2000.0) P Q n 0.17479020 Peri. 235.81184 -0.45222833 -0.85233248 a 3.1680449 Node 243.19638 +0.88407289 -0.38942829 e 0.1317020 Incl. 17.11791 +0.11791806 -0.34910594 P 5.64 Residuals in seconds of arc 210602 691 0.5+ 0.0 210609 F51 0.2+ 0.1- 210614 568 0.3- 0.2+ 210602 691 0.3- 0.2- 210614 F51 0.1- 0.2+ 210615 Q62 0.3- 0.5- 210602 691 0.4- 0.2+ 210614 F51 0.2- 0.2+ 210615 Q62 0.5- 0.2- 210609 F51 0.0 0.2+ 210614 F51 0.1+ 0.3+ 210616 Y00 0.8+ 0.1- 210609 F51 0.2+ 0.2- 210614 568 0.3- 0.2+ 210616 Y00 0.4+ 0.2- 210609 F51 0.3+ 0.2- 210614 568 0.3- 0.2+ 210616 Y00 0.1+ 0.0 --