Results 121 to 130 of about 824,786 (237)
Studies of asteroids, comets, and Jupiter's outer satellites [PDF]
The work comprises observational, theoretical, and computational research on asteroids, together with a smaller effort concerning the astrometry of comets and Jupiter's satellites JVI through JXIII.
Bowell, Edward
core +1 more source
Physical and Mutual Orbit Characteristics of Near-Earth Binary Asteroid (163693) Atira
The Planetary Science JournalWe report physical and mutual orbit characteristics of near-Earth binary asteroid (163693) Atira. Using S -band (2380 MHz, 12.6 cm) radar observations from the Arecibo Observatory and several epochs of lightcurve observations from 2003 to 2019 with SHAPE
Aaron P. Deleon +14 more
doaj +1 more source
Astronomy & AstrophysicsContext. Asteroid (469219) Kamo‘oalewa is the target of the Tianwen-2 sample-return mission by the China National Space Administration. Because of its orbit and its peculiar spectral properties, it was proposed that Kamo‘oalewa originated from the Moon ...
Fenucci Marco +3 more
doaj +1 more source
An ambitious new mission seeks the origin of the moons of Mars. [PDF]
Proc Natl Acad Sci U S A, 2023 Croswell K.
europepmc +1 more source
Numerical Determination of the Gravitational Cross Sections of an Accreting Binary
The Astrophysical JournalA significant amount of work has been devoted to the study of small binary solar system objects. The majority of these binaries, especially among the near-Earth or main belt asteroids, have small radius ratios, implying a large difference in size between
Zachary Murray
doaj +1 more source
Radar studies in the solar system [PDF]
We are actively engaged in observations of asteroids and comets, both as planned targets and as targets of opportunity. The most recent example of the latter is asteroid 1991 AQ, which was discovered optically on January 14, 1991 and found to be rapidly ...
Shapiro, Irwin I.
core +1 more source
Combined optical line-of-sight and crosslink radiometric navigation for distributed deep-space systems. [PDF]
Sci Rep, 2023 Casini S +4 more
europepmc +1 more source
Spin–Orbit Coupling of the Ellipsoidal Secondary in a Binary Asteroid System
The Astronomical JournalIn our solar system, spin–orbit coupling is a common phenomenon in binary asteroid systems, where the mutual orbits are no longer invariant due to exchange of angular momentum between translation and rotation.
Hanlun Lei
doaj +1 more source
The Astrophysical Journal LettersThe near-Earth asteroid Kamo‘oalewa, a quasi-satellite of the Earth and the first target for sample return by China’s Tianwen-2 mission, exhibits distinctive spectral characteristics.
Minge Liu +6 more
doaj +1 more source
Beyond Point Masses. II. Non-Keplerian Shape Effects Are Detectable in Several TNO Binaries
The Astronomical JournalAbout 40 trans-Neptunian binaries (TNBs) have fully determined orbits with about 10 others being solved except for breaking the mirror ambiguity. Despite decades of study, almost all TNBs have only ever been analyzed with a model that assumes perfect ...
Benjamin C. N. Proudfoot +62 more
doaj +1 more source