Status of Planetary Defense - Lindley Johnson NASA's Planetary Defense Officer Planetary Defense Coordination Office
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Status of Planetary Defense
Lindley Johnson
NASA’s Planetary Defense Officer
Planetary Defense Coordination Office
Planetary Science Division
NASA Headquarters
Washington, DC
PAC Meeting
June 14, 2021
nasa.gov/planetarydefense
2 nasa.gov/planetarydefense
Signatories to the International
Asteroid Warning Network (IAWN)
https://iawn.net/about/members.shtml
European Southern China National Northolt Branch Zwicky Višnjan Observatory
Observatory Space Administration Observatories (UK) Transient (Croatia)
Facility (US)
National Institute of Instituto de Astrofisica
Astrophysics, Optics & Electronics (México) de Canarias (Spain)
Sormano
Korean Astronomy Space Astronomical
Science Institute (KASI) University of Nariño Inst. of Solar- Observatory (Italy)
Colombia Terrestrial Physics SONEAR Observatory
(Siberian Branch,
(Brazil)
Russian Academy of Sciences)
Fondazione GAL Hassin
Institute of Astronomy, Crimean European (Italy)
Russian Academy of Sciences Astrophysical Observatory National Aeronautics and
Space
(Russian Academy of Sciences) Keldysh Institute of Applied
(ИНАСАН) Agency Space Administration
Mathematics, Russian Academy
Special
of Sciences (KIAM RAS)
Peter Birtwhistle (UK) Astrophysical
Observatory Agenzia Spaziale Italiana (ASI)
David Balam (Canada) Baldone Astrophysical
Patrick Wiggins (USA)
(Russian 3 Observatory, Latvia
Academy of
Gennady Borisov (MARGO Observatory) Sciences) G.V. SCHIAPARELLI, Italy
Jordi Camarasa (Observatori Paus B49) Kourovka Astronomical Observatory (UrFU )
Observatoire de la Côte d'Azur
Currently 32 signatories nasa.gov/planetarydefense
7th International Planetary Defense Conference
Impact Emergency Response Exercise
EXERCISE
6 Days prior to Impact
Optical and Radar tracking
100Discovered only
to 110 meter 6
object EXERCISE
months
Impact prior to 100%
Probability
EXERCISE
potential Impact
Entry Velocity 15.2 km/sec
Within
Energy a few weeks,
Release ~ 40Mton TNT
impact probability
became
Impact 100% based
Effects:
onof
Area NEOWISE
Completeand Devastation
~25“pre-covery”
km radius
observations
Area of Sustained Damage EXERCISE
~100 km radius EXERCISE
Total Area Affected
~140,000 square kilometers
Near–Earth Asteroids Catalog
Breaks through 25,000!
NASA’s search
started
in 1998 George E Brown
NEO Survey Goal
*Potentially Hazardous Asteroids come within 7.5 million km of Earth orbit
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All Near-Earth Asteroids (NEAs)
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NEAs 140 Meters and Larger
George E Brown
NEO Survey Goal
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NEO Surveillance Mission
Objectives:
NEO Surveyor
• Find 65% of undiscovered Potentially Space-based IR
Observatory
Hazardous Asteroids (PHAs) >140 m in 5 years
(goal: 90% in 10 years)
• Estimate sizes directly from IR signatures
• Compute cumulative chance of impact over
next century for PHAs >50 m and comets
• Deliver new tracklet data daily to the Minor
Planet Center
KDP-B approved 11 June for entry into
Preliminary Design phase
President’s Budget Request for FY22 would fully
fund NEO Surveyor for launch in 2026 if enacted
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Planetary Radar Planning Activities
Arecibo Planetary
Arecibo Planetary Radar
Radar Future of Planetary Radar
Several support
Controlled cables failedofand
decommissioning the telescope
305m secondaryannounced
bridge
collapsed
by NSF oninto the dish
19 Nov. 2020onfollowing
1 December, 2020failures
two cable
• Keck Institute Space Studies
Workshop on Next Generation
Planetary Radar 10-14 May, 2021
• Goal of draft report by mid- Summer
• National Science Foundation
Arecibo Observatory Options
Workshop running through month
of June 2021
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On Track for Second launch window
starting November 24, 2021
nasa.gov/planetarydefenseDART Final I&T Activities Proceeding Well
On Track for
Final Vibe Test in July
Pack and Ship Review
ROSA Wing 1 Installed in September Rebuilt DRACO completed Vibe
on Spacecraft (shown) and TVAC Testing
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