CODE catalogue news and release notes.

November 2023

Major update has been performed for the CODE Catalogue. Now we present 766 sets of orbits for 312 LPCs, including 258 Oort Cloud comets.

The calculation of 'previous' and 'next' orbits has been completely revised. First - we apply much more precised methods, second - we present two variants of these orbits: with and without stellar perturbations.

Were added sets of orbits for the complete sample of 29 Oort Cloud comets discovered in 2018, 2019, 2020, and January 2021, and four other LPCs from the same period.

For more than 30 Oort Cloud comets were included several orbits using at least three basic types of data sets selected from available positional data (pre- and post-perihelion data and the entire data set), and different forms of NG~acceleration representing water ice or CO sublimation.

New solutions for several other comets were included — for which data arcs are longer than they were at the moment of orbit determination for the initial CODE Catalogue. This also includes cases of pre-discovery measurements found sometime after these comets discoveries; see for example C/2007 W1 (Boattini), C/2015 R3 (PanSTARRS), and C/2017 K1 (PanSTARRS).

The new [O-C] pictures additionally include information about the distribution of weights within the data arcs.