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Open AccessArticle

A Quantitative Comparison of Exoplanet Catalogs

School of Geosciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, 6997801 Tel Aviv, Israel
Institute for Computational Science, Center for Theoretical Astrophysics and Cosmology, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
Author to whom correspondence should be addressed.
Geosciences 2018, 8(9), 325;
Received: 30 July 2018 / Revised: 23 August 2018 / Accepted: 25 August 2018 / Published: 29 August 2018
(This article belongs to the Special Issue Detection and Characterization of Extrasolar Planets)
In this study, we investigated the differences between four commonly-used exoplanet catalogs (;;; using a Kolmogorov–Smirnov (KS) test. We found a relatively good agreement in terms of the planetary parameters (mass, radius, period) and stellar properties (mass, temperature, metallicity), although a more careful analysis of the overlap and unique parts of each catalog revealed some differences. We quantified the statistical impact of these differences and their potential cause. We concluded that although statistical studies are unlikely to be significantly affected by the choice of catalog, it would be desirable to have one consistent catalog accepted by the general exoplanet community as a base for exoplanet statistics and comparison with theoretical predictions. View Full-Text
Keywords: methods: statistical; astronomical data bases: miscellaneous; catalogs; planetary systems; stars: statistics methods: statistical; astronomical data bases: miscellaneous; catalogs; planetary systems; stars: statistics
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Bashi, D.; Helled, R.; Zucker, S. A Quantitative Comparison of Exoplanet Catalogs. Geosciences 2018, 8, 325.

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