ExoData is a Python interface and exploratory analysis tool for the Open Exoplanet Catalogue. It allows the loading of exoplanet systems into Python as objects (Planet, Star, Binary, etc.) from which common orbital and system equations can be calculated and measured parameters retrieved. This allows researchers to use tested code of the common equations they require (with units) and provides a large science input catalogue of planets for easy plotting and use in research. Advanced querying of targets is possible using the database and Python programming language. ExoData is also able to parse spectral types and fill in missing parameters according to programmable specifications and equations. Examples of use cases are integration of equations into data reduction pipelines, selecting planets for observing proposals and as an input catalogue to large scale simulation and analysis of planets.
ExoData is a Python package available freely on GitHub. 1 It’s open source and community contributions are encouraged. The package can be easily installed using pip install exodata, detailed setup information is provided within.
Program title: ExoData
Catalogue identifier: AFAL_v1_0
Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AFAL_v1_0.html
Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland
Licensing provisions: GNU General Public License, version 3
No. of lines in distributed program, including test data, etc.: 21884
No. of bytes in distributed program, including test data, etc.: 608434
Distribution format: tar.gz
Programming language: Python 2.7, 3.4, 3.5.
Computer: Any.
Operating system: Any.
RAM: Less than 200MB
Classification: 1.7.
External routines: numpy, quantities, matplotlib, requests, astropy, seaborn, pandas, six
Nature of problem: Being able to use exoplanet catalogue values in code including where there may be incomplete and incorrectly formatted values. Also being able to use the whole catalogue data at once, both for user querying, visualisation and in large simulation programs.
Solution method: An interface to access the catalogue including filling in missing values and parsing of the catalogue data. Creating an API useable by both humans and other code, implementation of commonly used exoplanet equations, a plotting library.
Running time: A few seconds depending on task