Abstract
The distribution of perihelion distances of nearly periodic comets was studied using different assumptions about comet discovery probabilities. It was shown that the concentration of perihelia at small heliocentric distances cannot be explained solely by the influence of visibility conditions.
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Kalinicheva, O.V. Observational Selection of Comet Discoveries. Solar System Research 36, 260–266 (2002). https://doi.org/10.1023/A:1015801416521
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DOI: https://doi.org/10.1023/A:1015801416521