期刊
ASTRONOMY & ASTROPHYSICS
卷 541, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201218874
关键词
Kuiper belt objects: individual: (90377) Sedna; radiation mechanisms: thermal; techniques: photometric; Kuiper belt objects: individual: 2010 EK139
资金
- ESA [PECS 98073]
- Hungarian Academy of Sciences
- OTKA [K101393]
- German DLR [50 OR 1108, 50 OR 0903, 50 OR 0904]
- German Deutsches Zentrum fur Luft- und Raumfahrt, DLR [50OFO 0903]
- DFG [1385]
- Centre National de la Recherche Scientifique (CNRS)
- [AYA2008-06202-C03-01]
- [AYA2011-30106-C02-01]
- [2007-FQM2998]
We present estimates of the basic physical properties (size and albedo) of (90377) Sedna, a prominent member of the detached trans-Neptunian object population and the recently discovered scattered disk object 2010 EK139, based on the recent observations acquired with the Herschel Space Observatory, within the TNOs are Cool! key programme. Our modeling of the thermal measurements shows that both objects have larger albedos and smaller sizes than the previous expectations, thus their surfaces might be covered by ices in a significantly larger fraction. The derived diameter of Sedna and 2010 EK139 are 995 +/- 80 km and 470(-10)(+35) km, while the respective geometric albedos are p(V) = 0.32 +/- 0.06 and 0.25(-0.05)(+0.02). These estimates are based on thermophysical model techniques.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据