A. Hosadurga

Johns Hopkins University Applied Physics Laboratory

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Jeffrey Stuart

Jet Propulsion Laboratory

B. G. Williams

Microwave Monolithics (United States)

Joel T. Fischetti

B. Carcich

Cornell University

Kenneth E. Williams

Kettering University

Matthew R. Buckley

Rutgers, The State University of New Jersey

T. H. Zurbuchen

University of Michigan–Ann Arbor

B. Schmitt

Centre National de la Recherche Scientifique

R. M. Tedford

Southwest Research Institute

Neda Behrooz

Johns Hopkins University Applied Physics Laboratory

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Southwest Research Institute

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Johns Hopkins University

California Institute of Technology

Planetary Science Institute

Search for Extraterrestrial Intelligence

University of Colorado Boulder

Goddard Space Flight Center

Ames Research Center

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Initial results from the New Horizons exploration of 2014 MU ₆₉ , a small Kuiper Belt object

Science (2019)

S. A. Stern H. A. Weaver J. R. Spencer C. B. Olkin G. R. Gladstone

The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, the New Horizons spacecraft flew close to (486958) 2014 MU69, a Cold Classical Kuiper Belt Object, a class of objects that have never been heated by the Sun and are therefore well preserved since their formation. Here we describe initial results from these encounter observations. MU69 is a bi-lobed contact binary with a flattened shape, discrete geological units, and noticeable albedo heterogeneity. However, there is little surface color and compositional heterogeneity. No evidence for satellites, ring or dust structures, gas coma, or solar wind interactions was detected. By origin MU69 appears consistent with pebble cloud collapse followed by a low velocity merger of its two lobes.

Nice model

Albedo (alchemy)

10.1126/science.aaw9771

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Citations (136)