Results 81 to 90 of about 75,532 (195)
Minor planet astrophotometry [PDF]
, 2013 Historically, the Minor Planet Center (MPC) has concentrated on improving the quality of the astrometric observations and the resulting orbits of minor planets. In light of long-standing complaints in the literature about the quality of the photometric parameters for the minor planets, there has been a need to improve the quality of the absolute ...
openaire +1 more source
Metal-polluted White Dwarfs with 21 μm IR Excesses from JWST/MIRI: Planets or Dust?
The Astronomical JournalWhite dwarfs with metal pollution are caused by the accretion of rocky dust from tidally disrupted minor bodies and are signposts for planetary systems. These minor bodies are perturbed by planets that have survived post-main-sequence evolution.
John H. Debes +15 more
doaj +1 more source
Astronomy & AstrophysicsContext. L-types are a rare class of asteroids whose spectra indicate similarities with CO and CV chondrites, suggesting high abundances of refractory inclusions, particularly with respect to the calcium-aluminium-rich inclusion.
Mahlke M. +8 more
doaj +1 more source
Astronomy & AstrophysicsContext. One of the main bottlenecks in assessing the accuracy of the Mars orbit is the unknown value of the asteroids in the main asteroid belt. A modeling with 343 asteroids as point masses is used today, with the relative masses fit to observational ...
Mariani Vincenzo +4 more
doaj +1 more source
Astronomy & AstrophysicsContext. In the gravitational surface field of airless Solar System bodies, regolith should show densification when moving from the surface to greater depths. Aims.
Blum J. +5 more
doaj +1 more source
3-D orbital evolution model of outer asteroid belt [PDF]
The evolution of minor planets in the outer part of the asteroid belt is considered. In the framework of the semi-averaged elliptic restricted three-dimensional three-body model, the boundary of regions of the Hill's stability is found.
Gerasimov, Igor A. +2 more
core +1 more source