The last installment of this year's hypothetical asteroid impact scenario from #PDC2023 in April was finally released: https://cneos.jpl.nasa.gov/pd/cs/pdc23/epoch4.html.

Again:

This is a test.

In this scenario, deflection did not succeed so that impact effects can be considered.

This is only a test.

Planetary Defense Conference Exercise - 2023

We have the technology.

Also, contrary to this opinion piece, the impact hazard is not an 'existential risk'.

I would like to see the rest of the #PDC2023 hypothetical impact scenario, though.

https://theglobeandmail.com/opinion/article-somewhere-a-large-asteroid-is-on-course-to-eventually-hit-earth-will/

(Also: the term "existential risk" is currently being co-opted by a variety of scammers who pretend that "AI" is an existential risk and sometimes mention the impact hazard & other real risks as a cover. Scientists should be careful.)

Somewhere, a large asteroid is on course to eventually hit Earth. Will humanity be ready?

Asteroids and comets are existential threats, but humanity should be ready. We already know what needs to be done

The Globe and Mail

For everyone who attended #PDC2023 in April:

The next installment in this year's hypothetical impact scenario has been released: https://cneos.jpl.nasa.gov/pd/cs/pdc23/epoch3.html.

For everyone else:

This is only a test.

Let no one mistake pre-scripted scenarios as training tools for anything real.

Planetary Defense Conference Exercise - 2023

A bit of an odd request for asteroid folks:

If any of you have contact information for Qi Chen at the CNSA Deep Space Exploration Laboratory, could you email it to me?

I have been unable to find any email address on the English-language internet.

#PDC2023

For other #PDC2023 attendees:

I may have missed it: Was there a timeline for when the rest of the hypothetical impact scenario was going to be released?

The second half is still listed as "coming soon" - https://cneos.jpl.nasa.gov/pd/cs/pdc23/epoch3.html .

And for everyone else:

This is only a test.

Planetary Defense Conference Exercise - 2023

#PDC2023
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RT @IAU_Outreach
Keeping track of the @UNOOSA #IAAPDC2023? Worried about Near Earth Objects? ☄️

Learn more here: http://ow.ly/MTIN50NCVxj

#Astronomy #NEOs #Asteroids #LookUp

Image Credit: NASA/JPL-Caltech
Blue pts = all known NEAs between 1/1/1999 - 1/31/2018
https://twitter.com/IAU_Outreach/status/1644282005914284032

International Astronomical Union | IAU

The aim of this page is to briefly describe what the normal practice is when a NEO is discovered and what part the IAU might be seen to play in this process.

.@pgbrown described the #2022WJ1 impact and breakup from last November to #PDC2023 today: https://az659834.vo.msecnd.net/eventsairwesteuprod/production-atpi-public/08ebca3439744d63b5e4a193c144fcff
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RT @pgbrown
Bright fireball over Southern Ontario last night at 3:26 am caused by impact of asteroid 2022WJ1. This sub-meter-sized asteroid (one of the smallest NEAs ever detected) produced a spectacular fireball, though it was cloudy in many…
https://twitter.com/pgbrown/status/1594024499862982658
If you have been wondering what happens when you hit a rock pile with a particle beam.
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RT @meganimpact
Alex Vazsonyi’s poster on modeling ejecta produced by Ion Beam Deflection at asteroids (also viewable from https://atpi.eventsair.com/QuickEventWebsitePortal/23a01---8th-planetary-defense-conference/programme-website/Agenda) #pdc2023
https://twitter.com/meganimpact/status/1643929337803186177
8th IAA PDC 2023 - Agenda

European Conference on Spacecraft Structures, Materials and Environmental Testing

Legend tells of a NASA acronym dictionary, in which there are many overloaded entries.
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RT @astrosnapper
We often have a name/hashtag collision between the Planetary Defense Conference #pdc2023 and the darts competition but now we have DART https://nctr.pmel.noaa.gov/Dart/ for tsunami detection vs #DARTMission for planetary defense as well...
https://twitter.com/astrosnapper/status/1643997955987492865
DART (Deep-ocean Assessment and Reporting of Tsunamis)

#PDC2023 will be continuing though tomorrow, but this will end my live-posting about the meeting.

Thanks go to the organizers for setting up usable remote participation.