The Exoplanet Orbit Database

TL;DR

This paper introduces a comprehensive, publicly accessible database of well-measured exoplanet orbital parameters, enabling detailed analysis of exoplanet characteristics, migration signatures, and survey biases.

Contribution

The paper provides the first extensive, curated database of exoplanet orbital data, including tools for visualization and analysis, facilitating research on exoplanet demographics and evolution.

Findings

Identification of a correlation between exoplanet mass and orbital period.

Demonstration of different detection biases in radial velocity and transit surveys.

Observation that multi-planet systems have distinct semi-major axis distributions.

Abstract

We present a database of well determined orbital parameters of exoplanets. This database comprises spectroscopic orbital elements measured for 427 planets orbiting 363 stars from radial velocity and transit measurements as reported in the literature. We have also compiled fundamental transit parameters, stellar parameters, and the method used for the planets discovery. This Exoplanet Orbit Database includes all planets with robust, well measured orbital parameters reported in peer-reviewed articles. The database is available in a searchable, filterable, and sortable form on the Web at http://exoplanets.org through the Exoplanets Data Explorer Table, and the data can be plotted and explored through the Exoplanets Data Explorer Plotter. We use the Data Explorer to generate publication-ready plots giving three examples of the signatures of exoplanet migration and dynamical evolution: We illustrate the character of the apparent correlation between mass and period in exoplanet orbits, the selection different biases between radial velocity and transit surveys, and that the multiplanet systems show a distinct semi-major axis distribution from apparently singleton systems.