Retrieve Data from NASAs Exoplanet Archive

A simple interface for accessing exoplanet data. At the bare minimum, a table name is required. Tables names are documented in the `tableinfo` dataset.

Usage

exoplanets(table, columns = NULL, limit = NULL, format = "csv")

Source

https://exoplanetarchive.ipac.caltech.edu/

Arguments

table

A table name, see `tableinfo`.

columns

A vector of valid column names, by default will return all default columns, see `tableinfo`.

limit

Number of rows to return. If NULL, returns all data in the table.

format

Desired format, either csv, tsv, or json.

Value

A data.frame if format="csv" or format="tsv". A list if format="json".

Details

At one time, this package used the Exoplanet Archive Application Programming Interface (API). Since then, a handful of tables have been transitioned to the Table Access Protocol (TAP) service. More tables will be transitioned to TAP and as such, this package only supports queries from TAP. For more information, you can read https://exoplanetarchive.ipac.caltech.edu/docs/exonews_archive.html#29April2021.

See also

tableinfo

Examples

if (interactive()) {
  # request all default columns from the `ps` table
  exoplanets("ps")

  # request the planet name and discovery method from the `ps` table
  exoplanets("ps", c("pl_name", "discoverymethod"))

  # request the first 5 rows from the `keplernames` table
  exoplanets("keplernames", limit = 5)

  # request in json format (returns list)
  exoplanets("ps", c("pl_name", "discoverymethod"), format = "json")

}