3552 Don Quixote

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3552 Don Quixote, provisionally designated Template:Mp, is an exceptionally eccentric asteroid, classified as a near-Earth object of the Amor group, Mars-crosser and Jupiter-crosser, as well as a weakly active comet.

Discovery and namingEdit

The asteroid was discovered on 26 September 1983, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.<ref name="MPC-Don Quixote" /> It was named after the comic knight who is the eponymous hero of Cervantes Template:' Spanish novel Don Quixote (1605).<ref name="springer" /> The approved naming citation was published by the Minor Planet Center on 2 December 1990 (Template:Small).<ref name="MPC-Circulars-Archive" />

Orbit and characteristicsEdit

Don Quixote is characterized as a dark D-type asteroid in the Tholen and SMASS taxonomy.<ref name="jpldata" />

It has a highly inclined comet-like orbit of 31 degrees that leads to frequent perturbations by Jupiter.<ref name="jpl-close" /> Don Quixote measures 18.4 kilometres in diameter and has a rotation period of 7.7 hours.<ref name="jpldata" /><ref name="Mommert-2014" />

File:Pia17443 - Spitzer Spies Don Quixote.jpg

Don Quixote by Spitzer Space Telescope, featuring its coma and tail.

Due to its comet-like orbit and albedo, Don Quixote has been suspected to be an extinct comet.<ref name="Lupishko-2000" /> However, infrared observations with the Spitzer Space Telescope at 4.5 μm revealed a faint coma and tail around the object.<ref name="Mommert-2014" /> The cometary activity is inferred by carbon dioxide (Template:CO2) molecular band emission. In March 2018 a tail was observed at visible wavelengths for the first time.<ref>Template:Cite journal</ref> The observation of cometary features during two apparitions suggests that cometary activity is recurrent and Don Quixote is most likely a weakly active comet.<ref>Template:Cite journal</ref>

NotesEdit

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ReferencesEdit

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External linksEdit

Asteroid Lightcurve Database (LCDB), query form (info Template:Webarchive)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
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Template:JPL small body

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