An image of asteroid Bennu is shown as Olivier Barnouin (US Instrument Scientist, Johns Hopkins University/APL) discusses the OSIRIS-REx mission, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Bill Ingalls)

An image of asteroid Bennu is shown as Olivier Barnouin (US Instrument Scientist, Johns Hopkins University/APL) discusses the OSIRIS-REx mission, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Bill Ingalls)

Olivier Barnouin (US Instrument Scientist, Johns Hopkins University/APL) discusses the OSIRIS-REx mission, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Bill Ingalls)

Olivier Barnouin (US Instrument Scientist, Johns Hopkins University/APL) discusses the OSIRIS-REx mission, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Bill Ingalls)

Associate Administrator for NASA's Science Mission Directorate Thomas Zurbuchen, left, Olivier Barnouin (US Instrument Scientist, Johns Hopkins University/APL), Harold "Hal" Levison from the Southwest Research Institute in Boulder, Colorado, Lindy Elkins-Tanton Principal Investigator of the Psyche mission from Arizona State University, and New Horizons principal investigator Alan Stern of the Southwest Research Institute (SwRI), Boulder, CO, right, are seen during a briefing discussing small bodies missions, Monday, Dec. 31, 2018 at Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Photo Credit: (NASA/Bill Ingalls)