http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Confirmation of Large Super-fast Rotator (144977) 2005 EC <sub>127</sub>
Chang, Chan-Kao,Lin, Hsing-Wen,Ip, Wing-Huen,Lin, Zhong-Yi,Kupfer, Thomas,Prince, Thomas A.,Ye, Quan-Zhi,Laher, Russ R.,Lee, Hee-Jae,Moon, Hong-Kyu American Astronomical Society 2017 ASTROPHYSICAL JOURNAL LETTERS - Vol.840 No.2
<P>(144977) 2005 EC127 is a V-/A-type inner-main-belt asteroid with a diameter of 0.6 +/- 0.1. km. Asteroids of this size are believed to have rubble-pile structure, and therefore cannot have a rotation period shorter than 2.2 hr. However, our measurements show that asteroid 2005 EC127 completes one rotation in 1.65 +/- 0.01. hr with a peakto-peak light-curve variation of similar to 0.5. mag. Therefore, this asteroid is identified as a large super-fast rotator. Either a rubble-pile asteroid with a bulk density of rho similar to 6 g. cm(-3) or an asteroid with an internal cohesion of 47 +/- 30. Pa can explain 2005 EC127. However, the scenario of high bulk density is very unlikely for asteroids. To date, only six large super-fast rotators, including 2005 EC127, have been reported, and this number is very small when compared with the much more numerous fast rotators. We also note that none of the six reporting large SFRs are classified as C-type asteroids.</P>