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NASA Exoplanet Systems Parameter Catalogue
Data Science and Analytics
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About
Provides detailed information regarding confirmed planetary systems, drawing directly from the NASA Exoplanet Archive. This collection offers critical metrics about planets, their host stars, and discovery parameters. It serves as a definitive resource for researchers studying interstellar environments and the physical characteristics of known exoplanets, including measurements of mass, radius, temperature, and orbital mechanics. The data allows for deep analysis into the structure and diversity of planetary formations outside our solar system.
Columns
The dataset contains 36 columns detailing various physical and astronomical parameters. Key columns include:
- pl_name: The name assigned to the planet. There are 5,514 unique planet names.
- hostname: The name of the host star or system (4,112 unique host names).
- sy_snum: The total number of stars in the system (the mean is 1.1).
- sy_pnum: The total number of planets in the system (the mean is 1.77).
- disc_facility: The facility responsible for the planet's discovery; Kepler is the most common facility, accounting for 50% of discoveries.
- pl_orbper: The Orbital Period, measured in days (mean of 81.1 thousand days).
- pl_orbsmax: The Orbit Semi-Major Axis, measured in astronomical units [au].
- pl_rade: The Planet Radius, measured in Earth Radii [Earth Radius] (mean of 5.68).
- pl_bmasse: The Planet Mass or Mass*sin(i), measured in Earth Mass [Earth Mass].
- pl_eqt: The Equilibrium Temperature, measured in Kelvin [K] (mean of 913 K).
- st_mass: The Stellar Mass, measured in Solar mass (mean of 0.95 Solar mass).
- sy_dist: The Distance to the planetary system, measured in parsecs [pc] (mean of 699 pc).
- pl_bmassprov: Provenance information regarding the calculation of the planet mass (M-R relationship is the most common provenance at 52%).
Distribution
The data file is typically supplied in CSV format and is titled
PSCompPars_2023.09.17_08.49.34.csv, with a file size of 1.68 MB. It includes 36 distinct columns. The data contains approximately 5,514 records, with the majority of key fields being fully populated (100% valid), although some parameters like Orbital Period, Eccentricity, and Equilibrium Temperature have missing values ranging from 4% to 30%. The dataset is expected to be updated on a quarterly basis.Usage
This data is excellent for deep learning and statistical analysis applications in astrophysics and planetary science. Ideal uses include:
- Modelling exoplanetary atmospheres and interiors.
- Studying the correlation between stellar parameters (mass, temperature) and properties of orbiting planets (radius, mass, orbital period).
- Investigating planet formation theories by analysing system multiplicity (number of stars and planets).
- Visualising the distribution of planetary characteristics across different discovery facilities and telescopes.
Coverage
The scope is astronomical, covering planetary systems observed and catalogued by the NASA Exoplanet Archive. The data details parameters such as the stellar coordinates (RA and Dec) and distance (up to 8,500 parsecs). Discovery efforts are concentrated heavily in facilities like Kepler (50% of data) and telescopes such as the 0.95 m Kepler Telescope (60% of data). Physical coverage includes a wide range of orbital periods, from 0.09 days up to 402 million days, and planet masses spanning from 0.02 Earth masses up to 239 thousand Earth masses.
License
CC0: Public Domain
Who Can Use It
- Professional Astronomers and Astrophysicists: Utilising raw planetary system parameters for peer-reviewed research and theory validation.
- Data Scientists and Machine Learning Engineers: Developing predictive models for exoplanet habitability or system classification.
- Educational Institutions: Providing students with real-world, high-quality astronomical data for projects and learning modules.
- Space Enthusiasts: Exploring the scale and diversity of exoplanets known to science.
Dataset Name Suggestions
- NASA Exoplanet Systems Parameter Catalogue
- Archived Exoplanet Planetary Parameters
- Stellar and Planetary System Characteristics Data
- NASA Planetary Systems Discovery Archive
Attributes
Original Data Source: NASA Exoplanet Systems Parameter Catalogue
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