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(614689) 2020 XL5: Difference between revisions - Wikipedia

(614689) 2020 XL5: Difference between revisions

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== Physical characteristics ==
[[Photometry (astronomy)|Photometric]] measurements of optical observations from 2020–2021 show that {{mp|2020 XL|5}} exhibits a [[Asteroid color indices|color]] resembling thosethat of carbonaceous [[C-type asteroid]]s. Assuming that {{mp|2020 XL|5}}'s [[Phase curve (astronomy)|phase curve]] behaves similarly to those of C-type asteroids, the [[absolute magnitude]] (H) of the asteroid is 18.6, which corresponds to a mean diameter about {{cvt|1.18|km|mi}} for a typical C-type asteroid's [[geometric albedo]] of 0.06.<ref name="Santana-Ros2022"/> This makes {{mp|2020 XL|5}} the largest Earth trojan asteroid known to date, being up to three times as large as the {{cvt|0.3|km|mi}}-sized {{mp|2010 TK|7}}.<ref name="Santana-Ros2022"/>
 
Because {{mp|2020 XL|5}} is only visible at low [[Horizontal coordinate system|altitudes]] in the sky during [[twilight]], [[Astronomical seeing|atmospheric distortions]] and scattered light from the Sun hinder accurate photometry of the asteroid's [[light curve]], thus information about its rotation could not be determined.<ref name="Santana-Ros2022"/>