The geology and geophysics of Kuiper Belt object (486958) Arrokoth

@article{Spencer2020TheGA,
  title={The geology and geophysics of Kuiper Belt object (486958) Arrokoth},
  author={John R. Spencer and S. Alan Stern and J. M. Moore and H. Weaver and Kelsi N. Singer and Cathy B. Olkin and Anne J. Verbiscer and William B. McKinnon and Joel Wm. Parker and Ross A. Beyer and James Tuttle Keane and Tod R. Lauer and Simon B. Porter and Oliver L. White and Bonnie J. Buratti and M. R. El-Maarry and Carey M. Lisse and Alex H. Parker and H. B. Throop and Stuart J. Robbins and Orkan M. Umurhan and Richard P. Binzel and Daniel T. Britt and Marc W. Buie and Andrew Cheng and Dale P. Cruikshank and H. A. Elliott and G. Randall Gladstone and William M. Grundy and Matthew E. Hill and Mih{\'a}ly Hor{\'a}nyi and Donald E. Jennings and J. J. Kavelaars and Ivan R. Linscott and D. J. Mccomas and Ralph L. McNutt and Silvia Protopapa and Dennis C. Reuter and Paul M. Schenk and Mark R. Showalter and Leslie A. Young and Amanda M. Zangari and Abedin Abedin and Chloe B. Beddingfield and Susan D. Benecchi and Edwin A. Bernardoni and Carver J. Bierson and David Borncamp and Veronica Bray and Andrew L. Chaikin and Rajani D. Dhingra and C{\'e}sar I. Fuentes and Tetsuharu Fuse and P. L Gay and Stephen D. J. Gwyn and Douglas P. Hamilton and Jason D. Hofgartner and Matthew J. Holman and Alan D. Howard and Carly J. A. Howett and Hiroshi Karoji and David E. Kaufmann and M. Kinczyk and B. H. May and Matt Mountain and Martin P{\"a}tzold and J. M. Petit and M R Piquette and I. N. Reid and H. J. Reitsema and Kirby D. Runyon and Scott S. Sheppard and J. Stansberry and Ted Stryk and Paolo Tanga and David J. Tholen and D. E. Trilling and Lawrence H. Wasserman},
  journal={Science},
  year={2020},
  volume={367}
}
Examining Arrokoth The New Horizons spacecraft flew past the Kuiper Belt object (486958) Arrokoth (also known as 2014 MU69) in January 2019. Because of the great distance to the outer Solar System and limited bandwidth, it will take until late 2020 to downlink all the spacecraft's observations back to Earth. Three papers in this issue analyze recently downlinked data, including the highest-resolution images taken during the encounter (see the Perspective by Jewitt). Spencer et al. examined… 
Color, composition, and thermal environment of Kuiper Belt object (486958) Arrokoth
TLDR
The age, composition, and formation process of the most pristine object yet visited by a spacecraft is determined, including a high–spatial resolution color imaging observation, near-infrared spectral imaging, and microwave radiometry of Arrokoth.
The solar nebula origin of (486958) Arrokoth, a primordial contact binary in the Kuiper Belt
TLDR
The age, composition, and formation process of the most pristine object yet visited by a spacecraft is determined, and stresses in the neck region today are compatible with the structural integrity of Arrokoth for densities and material strengths similar to those observed in comets, but at mass scales ~1000 times the mass of typical cometary nuclei.
Photometry of Kuiper belt object (486958) Arrokoth from New Horizons LORRI
Abstract On January 1st 2019, the New Horizons spacecraft flew by the classical Kuiper belt object (486958) Arrokoth (provisionally designated 2014 MU69), possibly the most primitive object ever
A deep dive into the abyss
TLDR
Nasa's New Horizons spacecraft has provided the first close-up look at a small, cold classical Kuiper Belt object, and one of these objects is shown to be lightly cratered, ultrared, and binary.
Sublimation as an effective mechanism for flattened lobes of (486958) Arrokoth
The New Horizons spacecraft’s flyby of Kuiper belt object (486958) Arrokoth revealed a bilobed shape with highly flattened lobes both aligned to its equatorial plane, and a rotational axis almost
On the origin & thermal stability of Arrokoth's and Pluto's ices
Abstract In this paper we discuss in a thermodynamic, geologically empirical way the long-term nature of the stable majority ices that could be present in Kuiper Belt object (KBO) 2014 MU69 (aka
A re-assessment of the Kuiper belt size distribution for sub-kilometer objects
<p>In this work we combine several constraints provided by the crater records on Arrokoth and the worlds of the Pluto system to compute the size-frequency distribution (SFD) of the crater production
Origins of pits and troughs and degradation on a small primitive planetesimal in the Kuiper Belt: high-resolution topography of (486958) Arrokoth (aka 2014 MU69) from New Horizons
Abstract The dominant topographic features on two-lobed Kuiper Belt object (486958) Arrokoth (provisionally designated 2014 MU69) are scattered, small, circular depressions or pits up to ~1.0 km
Organic Components of Small Bodies in the Outer Solar System: Some Results of the New Horizons Mission
TLDR
The close encounters of the Pluto–Charon system and the Kuiper Belt object Arrokoth by NASA’s New Horizons spacecraft in 2015 and 2019 have given new perspectives on the most distant planetary bodies yet explored.
Persephone: A Pluto-system Orbiter and Kuiper Belt Explorer
Persephone is a NASA concept mission study that addresses key questions raised by New Horizons’ encounters with Kuiper Belt objects (KBOs), with arguably the most important being, “Does Pluto have a
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References

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Color, composition, and thermal environment of Kuiper Belt object (486958) Arrokoth
TLDR
The age, composition, and formation process of the most pristine object yet visited by a spacecraft is determined, including a high–spatial resolution color imaging observation, near-infrared spectral imaging, and microwave radiometry of Arrokoth.
The solar nebula origin of (486958) Arrokoth, a primordial contact binary in the Kuiper Belt
TLDR
The age, composition, and formation process of the most pristine object yet visited by a spacecraft is determined, and stresses in the neck region today are compatible with the structural integrity of Arrokoth for densities and material strengths similar to those observed in comets, but at mass scales ~1000 times the mass of typical cometary nuclei.
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TLDR
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TLDR
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Small, kilometre-sized near-Earth asteroids are expected to have young and frequently refreshed surfaces for two reasons: collisional disruptions are frequent in the main asteroid belt where they
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Saturn’s Moon Phoebe has been suggested to originate from the Kuiper Belt. However, its density is twice that of Kuiper Belt objects (KBOs) in the same size class, which challenges that
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Abstract We report on the physical properties of the craters of Asteroid (2867) Steins based on an analysis of images obtained with the OSIRIS instrument during the Rosetta flyby that took place on 5
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