Instrument Description
PEPSSI is a hockey-puck-size (7.6cm diameter by 2.5 cm thick), time-of-flight (TOF) spectrometer that measures ions and electrons over a broad range of energies and pitch angles. Particle composition and energy spectra are measured for H to Fe from ~15 keV/nucleon to 1 MeV/nucleon and for electrons from 15 keV to 700 keV. The PEPSSI instrument traces its heritage back to the MESSENGER Energetic Particle Sensor (EPS) instrument. The instrument weighs 1.5 kg and uses a maximum of 1.4 W of power.
Scientific Objectives
Determine the escape rate of Pluto's atmosphere.
Measure the interaction of the solar wind with Pluto's ionosphere.
Determine the source and nature of energetic particles found near Pluto.
Note: Acquisition of Jupiter data was an add-on.
The PEPSSI data are housed at the PDS/PPI node
Useful Mission Documents
Also See Space Sci Rev (2008) 140: 315–38, DOI 10.1007/s11214-008-9436-y, Ralph McNutt, The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission.
Trajectory Information for the Jupiter Flyby (Label and Table)
Jupiter Archive Collection - The data span the period 2007-01-01 to 2007-06-27
Raw Data
Calibrated Data
Alice
MVIC
LEISA
REX
LORRI
SWAP
PEPSSI
SDC
Publications - A listing of team members to facilitate literature searches.
PEPSSI is a hockey-puck-size (7.6cm diameter by 2.5 cm thick), time-of-flight (TOF) spectrometer that measures ions and electrons over a broad range of energies and pitch angles. Particle composition and energy spectra are measured for H to Fe from ~15 keV/nucleon to 1 MeV/nucleon and for electrons from 15 keV to 700 keV. The PEPSSI instrument traces its heritage back to the MESSENGER Energetic Particle Sensor (EPS) instrument. The instrument weighs 1.5 kg and uses a maximum of 1.4 W of power.
Scientific Objectives
Determine the escape rate of Pluto's atmosphere.
Measure the interaction of the solar wind with Pluto's ionosphere.
Determine the source and nature of energetic particles found near Pluto.
Note: Acquisition of Jupiter data was an add-on.
The PEPSSI data are housed at the PDS/PPI node
Useful Mission Documents
Also See Space Sci Rev (2008) 140: 315–38, DOI 10.1007/s11214-008-9436-y, Ralph McNutt, The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission.
Jupiter Flyby
Trajectory Information for the Jupiter Flyby (Label and Table)
Jupiter Archive Collection - The data span the period 2007-01-01 to 2007-06-27
Raw Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI JUPITER ENCOUNTER V1.1, NH-J-PEPSSI-2-JUPITER-V1.1, NASA Planetary Data System, 2007.”
Calibrated Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI JUPITER ENCOUNTER V1.1, NH-J-PEPSSI-3-JUPITER-V1.1, NASA Planetary Data System, 2007.”
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI JUPITER ENCOUNTER V1.1, NH-J-PEPSSI-2-JUPITER-V1.1, NASA Planetary Data System, 2007.”
Calibrated Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI JUPITER ENCOUNTER V1.1, NH-J-PEPSSI-3-JUPITER-V1.1, NASA Planetary Data System, 2007.”
Pluto Encounter
Raw Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS Raw PEPSSI PLUTO ENCOUNTER V3.0, NH-P-PEPSSI-2-PLUTO-V3.0, NASA Planetary Data System, 2018."
Calibrated Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS Raw PEPSSI PLUTO ENCOUNTER V3.0, NH-P-PEPSSI-2-PLUTO-V3.0, NASA Planetary Data System, 2018."
PEPSSI Resampled Plasma Fluxes
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI PLUTO ENCOUNTER PLASMA FLUXES V1.0, NH-P-PEPSSI-4-PLASMA-V1.0, NASA Planetary Data System, 2018."
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS Raw PEPSSI PLUTO ENCOUNTER V3.0, NH-P-PEPSSI-2-PLUTO-V3.0, NASA Planetary Data System, 2018."
Calibrated Data
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS Raw PEPSSI PLUTO ENCOUNTER V3.0, NH-P-PEPSSI-2-PLUTO-V3.0, NASA Planetary Data System, 2018."
PEPSSI Resampled Plasma Fluxes
Citation to use when referencing this data set: "McNutt, R. Jr., NEW HORIZONS PEPSSI PLUTO ENCOUNTER PLASMA FLUXES V1.0, NH-P-PEPSSI-4-PLASMA-V1.0, NASA Planetary Data System, 2018."
Flyby of Arrokoth (Asteroid 486958)
Raw Data
Calibrated Data
Alice
MVIC
LEISA
REX
LORRI
SWAP
PEPSSI
SDC