Small Bodies Mission Support

The EPOXI mission is the combination of two independently proposed scientific investigations using the flyby spacecraft of Deep Impact in an extended mission:

• EPOCh (Extrasolar Planet Observation and Characterization) utilized the HRI Visible CCD on the Deep Impact flyby spacecraft from January through August 2008 to observe transits of known extrasolar planetary systems (GJ 436, HAT-P 4, HAT-P 7, TRES-2, TRES-3, WASP-3, XO-2, and XO-3) to look for perturbations due to terrestrial planets in low-order resonances and search those same systems for secondary occultations of the hot Jupiter by the star. EPOCh is utilizing both the HRI Visible CCD and HRI Infrared Spectrometer in 2008 and 2009 to characterize the Earth as an analog for extrasolar planets.

• DIXI (Deep Impact eXtended Investigation) consists of a flyby of 103P/Hartley 2 on 4 November 2010 in order to study a second short-period comet with the same set of instrumentation as was used at 9P/Tempel 1.

The EPOXI Mission web site is maintained by the University of Maryland; a mission timeline is available here. The Deep Impact Legacy web site maintained by JPL provides that mission. Deep Impact data are archived at SBN.

The SBN is the lead PDS node to archive the EPOXI mission data; the EPOXI project will also deliver PDS-formatted EPOCh data to the Multi-Mission Archive at the STScI (MAST). The approved Data Management and Archive Plan is available as a PDF file (0.7 MB), and the latest version of the Archive Volume and Data Product SIS is also available as a PDF file (1.2 MB). The latest version of the PDS catalog files that describe the mission and instruments for the EPOXI archive are available here.

Use PDS Subscription Service to receive an e-mail notification when EPOXI data sets are available online at PDS.

Instrument or Investigation (Description)	Measuring	Data Link
High Resolution Instrument - Infrared Spectrometer (HRII)	Earth as an analog for extrasolar planets; Cometary surface and gas composition	EPOCh Earth spectra - Raw (not yet available) EPOCh Earth spectra - Calibrated (not yet available) In-flight Calibrations - Raw Instrument Thermal Telemetry
High Resolution Instrument - Visible CCD (HRIV)	Extrasolar planet transits; Earth as an analog for extrasolar planets; Cometary morphology and outgassing; Navigation imaging	EPOCh Exoplanet Transit images - Raw EPOCh Exoplanet Transit images - Calibrated EPOCh Earth images - Raw EPOCh Earth images - Calibrated In-flight Calibrations - Raw Instrument Thermal Telemetry
Medium Resolution Instrument - Visible CCD (MRI)	Context imaging for EPOCh Earth observations; Cometary morphology and outgassing; Navigation imaging	EPOCh Earth context images - Raw EPOCh Earth context images - Calibrated In-flight Calibrations - Raw Instrument Thermal Telemetry
Navigation (SPICE)	Pointing, spacecraft ephemerides, and other ancillary information	SPICE kernels
Radio Science (RSS)	Dust drag during comet flyby	No data until DIXI
Other	Archive documentation; High-level products such as light curves and shape models	Deep Impact & EPOXI Documentation Set V2.0

Target	Target Type	Other Data Sets Targeting this Object
103P/Hartley 2	Short-period Comet

Last update: 20 October 2009, SMcLaughlin