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(137924) 2000 BD19
(also written 2000 BD19) is an asteroid with the smallest perihelion of any numbered asteroid (0.092 AU—38% of Mercury's orbital radius). With its high eccentricity, not only does get very close to the Sun, but it also travels relatively far away from it. It has the third largest aphelion of any numbered Aten asteroid〔(List of Aten asteroids sorted by Q in decreasing order, generated by the JPL Small-Body Database Search Engine ) Retrieved 2011-09-12〕 and is one of a small group of Aten asteroids that is also a Mars grazer.〔(List of Aten asteroids with Q>1.38 AU and sorted by Q in decreasing order, generated by the JPL Small-Body Database Search Engine ) Retrieved 2011-09-12〕 Its orbital elements indicate that may be an extinct comet. It hasn't been seen displaying cometary activity so far.
was discovered by LINEAR in January 2000 and was soon after located by DANEOPS on Palomar plates from February 10, 1997. This allowed a reasonably precise orbit determination, and as a result it was spotted again on February 27, 2001 and January 21, 2002. When it was discovered, it beat 1995 CR's record for both asteroid with the smallest perihelion and for Aten asteroid with the highest eccentricity.
It is estimated that 's surface temperature reaches ~920 K at perihelion, enough to melt lead and zinc, and nearly enough to melt aluminium. is considered a good candidate for measuring the effects of Albert Einstein's general theory of relativity because of how close it comes to the Sun.〔Margot, Jean-Luc (Measuring asteroidal perihelion advance to measure solar oblateness and test general relativity ), retrieved December 22, 2007〕
==References==
* (MPEC 2000-C49 )
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