NASA Exoplanet Archive: Exoplanet Transit Survey XO Search

The NASA Exoplanet Archive provides access to high precision time series photometry from stars observed by various transit survey programs. The data have been donated by astronomers who have sought to search for extra-solar planets via photometric transits of the planets around the host stars. The photometric surveys are typically of specific regions of the sky (e.g., field stars, open clusters, etc). Each survey in the archive has different characteristics (e.g., field location, field size, filters in which time-series photometry was performed, magnitude ranges, etc.).

For detailed information about the XO dataset, please see the specific holdings page.

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Retrieve Star Light Curve by ID

The star IDs for the XO dataset(s) are formatted as integers of up to 4 digits prefixed by 'XO-DR1_': XO-DR1_starid.
Example: XO-DR1_100
The ID search is case sensitive.

Clear text field
Star ID


Search for Star Light Curves by Constraint

Positional Constraints

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Column Description Min Value help Max Value help Equinox Output help Include Stars
with No Value help
Right Ascension (decimal degrees or sexagesimal) J2000
Declination (decimal degrees or sexagesimal) J2000

Photometric Constraints

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Column Description Min Value help Max Value help Unit Output help Include Stars
with No Value help
Median J band magnitude magnitude
Median H band magnitude magnitude
Median K band magnitude magnitude

Time Constraints

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Column Description Min Value help Max Value help Unit Output help Include Stars
with No Value help
Start Heliocentric Julian Date Coverage day
End Heliocentric Julian Date Coverage day

Light Curve Constraints

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Column Description Min Value help Max Value help Unit Output help Include Stars
with No Value help
Number of points in light curve  
Median value of data points in light curve magnitude
Mean value of data points in light curve magnitude
Median absolute deviation statistic of light curve magnitude
1 Sigma rms dispersion of light curve magnitude
Number of points in light curve beyond 5-sigma of median value  
Fraction of points in light curve beyond 5-sigma of median value