New catalogue of one-apparition comets discovered in the years 1901–1950
I. Comets from the Oort spike ⋆
1 Space Research Centre of the Polish Academy of Sciences, Bartycka 18A, 00-716 Warsaw, Poland
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2 Astronomical Institute of the Slovak Academy of Sciences, 845 04 Bratislava, The Slovak Republic
3 Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden
4 Former employee of Space Research Centre of the Polish Academy of Sciences, Bartycka 18A, 00-716 Warsaw, Poland
Received: 3 June 2014
Accepted: 3 September 2014
Context. The orbits of one-apparition comets discovered in the early part of the last century have formerly been determined with very different numerical methods and assumptions on the model of the solar system, including the number of planets taken into account. Moreover, observations of the comet-minus-star-type sometimes led to determination of the comet position that are less precise than what we can derive today by using a more modern star catalogue.
Aims. We aim to provide a new catalogue of cometary orbits that are derived using a completely homogeneous data treatment, accurate numerical integration, and a modern model of the solar system.
Methods. We collected the complete sets of observations for investigated comets from the original publications. Then we recalculated the cometary positions for the comet-minus-star-type of observations using the Positions and Proper Motions Star Catalogue, and applied a uniform method for the data selection and weighting. As a final result, new osculating orbits were determined. Secondly, dynamical calculations were performed to the distance of 250 AU from the Sun to derive original and future barycentric orbits for evolution backward and forward in time. These numerical calculations for a given object start from a swarm of virtual comets constructed using our osculating (nominal) orbit. In this way, we obtained the orbital element uncertainties of original and future barycentric orbits.
Results. We present homogeneous sets of orbital elements for osculating, original, and future orbits for 38 one-apparition comets. Non-gravitational orbits are derived for thirteen of them.
Key words: catalogs / comets: general / Oort Cloud
All catalogue tables given in appendices (Tables A.1–E.1) are also available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (184.108.40.206) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/571/A63
© ESO, 2014