Editing Palermo scale (section)

==References==
{{Reflist
| refs =

<ref name="palermo">{{cite web
  |title=Palermo Technical Impact Hazard Scale
  |publisher=NASA/JPL [[Center for Near-Earth Object Studies]]
  |url=https://cneos.jpl.nasa.gov/sentry/palermo_scale.html
  |access-date=2025-02-09
  |archive-date=14 November 2017
  |archive-url=https://web.archive.org/web/20171114131924/https://cneos.jpl.nasa.gov/sentry/palermo_scale.html
  |url-status=live
  }}</ref>

<ref name="removed">{{cite web
  |title=Sentry Risk Table - Removed Objects
  |publisher=NASA/JPL Near-Earth Object Program Office
  |url=https://cneos.jpl.nasa.gov/sentry/removed.html
  |access-date=2025-02-10
  |archive-date=17 October 2017
  |archive-url=https://web.archive.org/web/20171017180942/https://cneos.jpl.nasa.gov/sentry/removed.html
  |url-status=live
  }}</ref>

<ref name="hohmanntransfer">{{cite web
  |date=29 March 2003
  |title=How A/CC broke the 2002 NT7 story
  |publisher=hohmanntransfer
  |url=http://www.hohmanntransfer.com/sas/nt7/index.html
  |archive-url=https://web.archive.org/web/20201106104922/http://www.hohmanntransfer.com/sas/nt7/index.html
  |archive-date=2020-11-06 |url-status=dead
  |access-date=2019-04-25}}</ref>

<ref name="mirror">{{cite web
  |date=27 December 2004
  |title=2004 MN4 Earth Impact Risk Summary (computed 27 December 2004)
  |publisher=The Cosmic Mirror
  |author=Daniel Fischer
  |url=http://www.astro.uni-bonn.de/~dfischer/mirror/285neo041227.html
  |archive-url=https://web.archive.org/web/20050314032111/https://astro.uni-bonn.de/~dfischer/mirror/285neo041227.html
  |archive-date=14 March 2005
  |url-status=dead
  |access-date=2011-11-04}}</ref>

<ref name="predicting-Apophis">{{cite web
  |title=Predicting Apophis' Earth Encounters in 2029 and 2036
  |publisher=NASA/JPL Near-Earth Object Program Office
  |url=http://neo.jpl.nasa.gov/apophis/
  |archive-url=https://web.archive.org/web/20071118121950/http://neo.jpl.nasa.gov/apophis/
  |access-date=2007-12-28
  |archive-date=2007-11-18
  |url-status=dead}}</ref>

<ref name="SEIM29075">{{Cite web
  |title=Sentry: Earth Impact Monitoring: 29075
  |publisher=NASA/JPL Near-Earth Object Program Office
  |url=https://cneos.jpl.nasa.gov/sentry/details.html#?des=29075
  |archive-url=https://web.archive.org/web/20170402082636/https://cneos.jpl.nasa.gov/sentry/details.html
  |access-date=2017-06-20
  |archive-date=2017-04-02
  |url-status=live}}</ref>

<ref name="NEO-1950DA_1">{{cite web
  |title=Asteroid 1950 DA
  |publisher=NASA/JPL Near-Earth Object Program Office
  |url=http://neo.jpl.nasa.gov/1950da/
  |archive-url=https://web.archive.org/web/20021001185910/http://neo.jpl.nasa.gov/1950da/
  |access-date=2011-10-14
  |archive-date=2002-10-01
  |url-status=dead}}</ref>

<!--updated<ref name="NEO-1950DA_2">{{cite web
  |title=Asteroid 1950 DA Earth Impact Risk Summary
  |publisher=NASA/JPL Near-Earth Object Program Office
  |url=http://neo.jpl.nasa.gov/risk/a29075.html
  |archive-url=https://web.archive.org/web/20131226230040/http://neo.jpl.nasa.gov/risk/a29075.html
  |url-status=dead
  |archive-date=2013-12-26
  |access-date=2014-12-10}}</ref>-->

}}