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Article
Open AccessA contact binary satellite of the asteroid (152830) Dinkinesh
Asteroids with diameters less than about 5 km have complex histories because they are small enough for radiative torques (that is, YORP, short for the Yarkovsky–O’Keefe–Radzievskii–Paddack effect)1 to be a notabl...
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Article
Open AccessShapes, Rotations, Photometric and Internal Properties of Jupiter Trojans
The Jupiter Trojans, being trapped around the stable L4 and L5 Jupiter Lagrangian points, are thought to be more primitive than the Main Belt asteroids. They are believed to have originated from a range of hel...
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Open AccessTrojan Asteroid Satellites, Rings, and Activity
The Lucy mission will encounter five Jupiter Trojans during its mission with three of the five already known to be multiple systems. These include a near-equal-mass binary, a small and widely separated satellite,...
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Article
Navigation and Orbit Estimation for New Horizons’ Arrokoth Flyby: Overview, Results and Lessons Learned
The New Horizons mission performed a successful flyby of Arrokoth, a distant Kuiper-Belt Object, on January 1, 2019, representing the farthest planetary encounter to date. The navigation strategy and performance ...
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Non-gravitational acceleration in the trajectory of 1I/2017 U1 (‘Oumuamua)
‘Oumuamua (1I/2017 U1) is the first known object of interstellar origin to have entered the Solar System on an unbound and hyperbolic trajectory with respect to the Sun1. Various physical observations collected d...
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Article
Open AccessLCROSS (Lunar Crater Observation and Sensing Satellite) Observation Campaign: Strategies, Implementation, and Lessons Learned
NASA’s LCROSS (Lunar Crater Observation and Sensing Satellite) mission was designed to explore the nature of previously detected enhanced levels of hydrogen near the lunar poles. The LCROSS mission impacted th...
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Water frost on Charon
The current series of mutual eclipses between Pluto and its satellite, Charon, provides a very powerful means of probing the most distant known planet in our Solar System. Observations from 1985 and 1986 have...
