the exploration of the pluto system by new horizons · distant flyby observations of ~20 other...
TRANSCRIPT
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The Exploration of the Pluto System by New Horizons
Alan Stern and the New Horizons Team
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PLUTO SYSTEM MEASUREMENT OBJECTIVES
Group 1 Objectives: Characterize the global geology and morphology of Pluto and Charon Map surface composition of Pluto and Charon Characterize the neutral atmosphere of Pluto and its escape rate
Group 2 Objectives: Characterize the time variability of Pluto's surface and atmosphere Image Pluto and Charon in stereo Map the terminators of Pluto and Charon with high resolution Map the composition of selected areas of Pluto & Charon at high resolution Characterize Pluto's ionosphere and solar wind interaction Search for neutral species including H, H2, HCN, and CxHy, and other
hydrocarbons and nitriles in Pluto's upper atmosphere Search for an atmosphere around Charon Determine bolometric Bond albedos for Pluto and Charon Map the surface temperatures of Pluto and Charon
Group 3 Objectives: Characterize the energetic particle environment of Pluto and Charon Refine bulk parameters (radii, masses, densities) and orbits of Pluto & Charon Search for magnetic fields of Pluto and Charon Search for additional satellites and rings
Required
Desired
Important
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THE SCIENTIFIC PAYLOAD Instruments:
REX radio science & radiometry RALPH VIS/IR imaging & spectroscopy ALICE UV imaging spectroscopy LORRI High-resolution imager SWAP plasma spectrometer PEPSSI energetic particle spectrometer SDC EPO Student Dust Counter
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PRIMARY CHALLENGES
Cost Development Schedule
Launch Vehicle Development
Instrument Miniaturization
Nuclear Launch Approval
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N E W H O R I Z O N S : P L U T O E N C O U N T E R
TIMELINE
PRIM ARY OPERATIONS
MANEUVERS
HAZARD SEARCH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Jan Feb Mar May Apr Jun Jul Aug Oct Sep
ENCOUNTER OVERVIEW
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N E W H O R I Z O N S : P L U T O E N C O U N T E R
TIMELINE
PRIM ARY OPERATIONS
MANEUVERS
HAZARD SEARCH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Jan Feb Mar May Apr Jun Jul Aug Oct Sep
ENCOUNTER OVERVIEW
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N E W H O R I Z O N S : P L U T O E N C O U N T E R
TIMELINE
PRIM ARY OPERATIONS
MANEUVERS
HAZARD SEARCH
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Jan Feb Mar May Apr Jun Jul Aug Oct Sep
ENCOUNTER OVERVIEW
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All surface feature names in this talk and all others are informal.
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Spin Periods
PLUTO’S SMALL SATELLITES ARE ALL NON-SYNCHRONOUS ROTATORS
Body Spin Period
Days Orbits
Pluto 6.387 1
Charon 6.387 1
Styx 3.239 6.22
Nix 1.829 13.6
Kerberos 5.33 6.04
Hydra 0.4295 88.9
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Nix
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2380 km
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Pre Post
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Breakthrough Mission Cost and Development Time. All flyby objectives met or exceeded.
First PDS Archiving Delivery: April; ROSES DAP Call 2016.
About 20 Publications Already Submitted.
RECAP
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EXTENDED MISSION: 2016-2021
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KBO CLOSE (3,000 KM)
FLYBY PT1
MPC Designator 2014 MU69 Diameter Range 21-40 km
Orbital Semi-major Axis 44.2 AU Orbital Eccentricity 0.036 Orbital Inclination 1.9 deg KBO Type Cold Classical Encounter Date 1 Jan 2019
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KBO EXTENDED MISSION SCIENCE OBJECTIVES
Close flyby of a primordial KBO planetesimal: 2019. Distant flyby observations of ~20 other KBOs: 2016-2020. Search for Centaur and KBO Rings: 2016-2020. Heliospheric transect of the Kuiper Belt—plasma, dust, and neutral gas observations: 2016-2021. Potentially conduct astrophysical cruise science: 2020-2021.
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KBO EXTENDED MISSION SCIENCE OBJECTIVES
Close flyby of a primordial KBO planetesimal: 2019. Distant flyby observations of ~20 other KBOs: 2016-2020.
Search for Centaur and KBO Rings: 2016-2020.
Heliospheric transect of the Kuiper Belt—plasma, dust, and neutral gas observations: 2016-2021. Potentially conduct astrophysical cruise science: 2020-2021.
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KBO EXTENDED MISSION KBO SURVEY SCIENCE
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The Exploration of Pluto By New Horizons
Alan Stern
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Backups
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40 km
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KBO EXTENDED MISSION SCIENCE OBJECTIVES
Close flyby of a primordial KBO planetesimal: 2019. Distant flyby observations of ~20 other KBOs: 2016-2020. Search for Centaur and KBO Rings: 2016-2020. Heliospheric transect of the Kuiper Belt—plasma, dust, and neutral gas observations: 2016-2021. Potentially conduct astrophysical cruise science: 2020-2021.