EPOXI Exoplanet Transit Observations: Stellar Photometry from 2008

Aperture photometry for six known transiting exoplanet systems observed by NASA's Deep Impact spacecraft. The data were derived from continuous 50-second integrations over about three weeks per system, typically covering five or more transits and secondary eclipses. NASA collected this data during the EPOCh phase of the EPOXI mission from 22 January through 31 August 2008.

Use Cases

• Modeling exoplanet transit timing variations based on multi-transit observations.
• Analyzing secondary eclipse depths to infer exoplanet atmospheric properties.
• Characterizing stellar activity and noise in photometric time series data.
• Validating and comparing transit models for specific systems like GJ 436 and WASP-3.

Strengths

• Data covers six specific exoplanet systems (GJ 436, HAT-P-4, HAT-P-7, TrES-2, TrES-3, WASP-3).
• Observations span a defined 7-month period from January to August 2008.
• Time series uses a consistent 50-second integration cadence for high temporal resolution.
• Typically covers five or more transits per observed system, aiding in signal averaging.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale ML tasks.
• Data is from a specific 2008 mission; newer observations may be available elsewhere.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from radiance calibrated, clear #6 filtered images acquired by the Deep Impact High Resolution Visible CCD.

Time Range

22 January through 31 August 2008

Freshness

Last updated 2026-03-13 12:00:01.805485; freshness should be verified.