GSTDTAP  > 气候变化
DOI10.1029/2018GL078996
Great Expectations: Plans and Predictions for New Horizons Encounter With Kuiper Belt Object 2014 MU69 ("Ultima Thule")
Moore, Jeffrey M.1; McKinnon, William B.2; Cruikshank, Dale P.1; Gladstone, G. Randall3; Spencer, John R.4; Stern, S. Alan4; Weaver, Harold A.5; Singer, Kelsi N.4; Showalter, Mark R.6; Grundy, William M.7; Beyer, Ross A.1,6; White, Oliver L.1,6; Binzel, Richard P.8; Buie, Marc W.4; Buratti, Bonnie J.9; Cheng, Andrew F.5; Howett, Carly4; Olkin, Cathy B.4; Parker, Alex H.4; Porter, Simon B.4; Schenk, Paul M.10; Throop, Henry B.11; Verbiscer, Anne J.12; Young, Leslie A.4; Benecchi, Susan D.11; Bray, Veronica J.13; Chavez, Carrie L.1,6; Dhingra, Rajani D.14; Howard, Alan D.15; Lauer, Tod R.16; Lisse, C. M.5; Robbins, Stuart J.4; Runyon, Kirby D.5; Umurhan, Orkan M.1,6
2018-08-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:16页码:8111-8120
文章类型Article
语种英语
国家USA
英文摘要

The New Horizons encounter with the cold classical Kuiper Belt object 2014 MU69 (informally named "Ultima Thule," hereafter Ultima) on 1 January 2019 will be the first time a spacecraft has ever closely observed one of the free-orbiting small denizens of the Kuiper Belt. Related to but not thought to have formed in the same region of the solar system as the comets that been explored so far, it will also be the most distant, and most primitive body yet visited by spacecraft. In this letter we begin with a brief overview of cold classical Kuiper Belt objects, of which Ultima is a prime example. We give a short preview of our encounter plans. We note what is currently known about Ultima from Earth-based observations. We then review our expectations and capabilities to evaluate Ultima's composition, surface geology, structure, near space environment, small moons, rings, and the search for activity.


Plain Language Summary The letter discusses the current state-of-knowledge for the cold classical Kuiper Belt object 2014 MU69, the target of a close encounter by NASA's New Horizon spacecraft on 1 January 2019. We also review our encounter plans and make broad speculative predictions as to might be revealed by our observations. New Horizons will fly to within 3,500 km of 2014 MU69 (informally named "Ultima Thule"), acquiring images with pixel scale resolutions significantly better than 100 m/pixel). We plan to obtain topography derived from stereo imaging and body shape. Our spectroscopic observations potentially could detect H2O, CH4, N-2, CH3OH, and NH3, depending on their brightness and abundance on the surface. We will also search for evidence of outgassing, small moons, and rings. This exploration will transform Kuiper Belt and Kuiper Belt object science from a purely astronomical regime, to a geological and geophysical regime, which radically changed paradigms when the same happened to asteroids and comets in past decades.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000445612500027
WOS关键词TRANS-NEPTUNIAN BINARIES ; COMET 67P/CHURYUMOV-GERASIMENKO ; SATELLITES ; STABILITY ; ORIGIN ; PHOEBE ; IMAGER ; RING
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/27140
专题气候变化
作者单位1.NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA;
2.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA;
3.Southwest Res Inst, San Antonio, TX USA;
4.Southwest Res Inst, Boulder, CO USA;
5.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA;
6.SETI Inst, Mountain View, CA USA;
7.Lowell Observ, 1400 W Mars Hill Rd, Flagstaff, AZ 86001 USA;
8.MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA;
9.CALTECH, Jet Prop Lab, NASA, Pasadena, CA USA;
10.Lunar & Planetary Inst, 3303 NASA Rd 1, Houston, TX 77058 USA;
11.Planetary Sci Inst, Tucson, AZ USA;
12.Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA;
13.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA;
14.Univ Idaho, Dept Phys, Moscow, ID USA;
15.Univ Virginia, Dept Environm Sci, Clark Hall, Charlottesville, VA 22903 USA;
16.Natl Opt Astron Observ, Tucson, AZ 85726 USA
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GB/T 7714
Moore, Jeffrey M.,McKinnon, William B.,Cruikshank, Dale P.,et al. Great Expectations: Plans and Predictions for New Horizons Encounter With Kuiper Belt Object 2014 MU69 ("Ultima Thule")[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(16):8111-8120.
APA Moore, Jeffrey M..,McKinnon, William B..,Cruikshank, Dale P..,Gladstone, G. Randall.,Spencer, John R..,...&Umurhan, Orkan M..(2018).Great Expectations: Plans and Predictions for New Horizons Encounter With Kuiper Belt Object 2014 MU69 ("Ultima Thule").GEOPHYSICAL RESEARCH LETTERS,45(16),8111-8120.
MLA Moore, Jeffrey M.,et al."Great Expectations: Plans and Predictions for New Horizons Encounter With Kuiper Belt Object 2014 MU69 ("Ultima Thule")".GEOPHYSICAL RESEARCH LETTERS 45.16(2018):8111-8120.
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