PanSTARRS 1 discoveries of New Neptune Trojans: Preliminary Results
林省文1*, 陳英同2, Matthew J. Holman3, 葉永烜1,4
1天文研究所, 國立中央大學, Taiwan
2天文所, 中央研究院, Taiwan
3ITC, Harvard-Smithsonian Center of Astrophysics, MA, USA
4Space Science Institutde, Macau University of Science and Technology, Macau, China
* presenting author:Hsing Wen Lin, email:edlin@gm.astro.ncu.edu.tw
Neptune Trojans are a well-known probe of the dynamical environment of the outer solar system. However, given the small number of known Neptune Trojans, many questions remain: the total number, the size distribution, and the orbital distribution of Neptune Trojans are all still unclear.
The Pan-STARRS 1 (PS1) survey provides a chance to comprehensively investigate the properties of the Neptune Trojan population. In this study we present our preliminary results of a PS1 search for new Neptune Trojans. Four stable L4 Trojans and one unstable L5 Trojan have been discovered. The preliminary orbital distribution of the Neptune Trojan populations shows a possible L4/L5 distribution asymmetry from the combination of our new candidates and the other 9 known L4 and 3 known L5 Neptune Trojans.


Keywords: Trans-Neptunian Object, Minor Planet