Results 141 to 150 of about 123,357 (335)

Evidence for Phosphate Metasomatism in an Olivine‐Rich Achondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Brachinites, brachinite‐like achondrites (BLA), and other similar primitive achondrites offer important constraints on differentiation processes of the earliest formed planetesimals, as they quenched amidst early differentiation processes on their parent body. Geochemical data for all major mineral phases in two previously poorly characterized
Robert W. Nicklas, Melody Z.‐A. Chen, Evan J. Saltman, Ethan F. Baxter, Andrew J. Lonero, Anthony B. Love   +5 more
wiley   +1 more source

The distribution of asteroids: evidence from Antarctic micrometeorites [PDF]

, 2002
The relative abundances of types amongst 550 AMMs are reported. These suggest that C-type asteroids vary from petrologic type 1 to 3.2 and that the majority of S-type asteroids are chondrule ...
Genge, M. J., Grady, Monica
core  

Mining the ESO WFI and INT WFC archives for known Near Earth Asteroids. Mega-Precovery software

, 2013
The ESO/MPG WFI and the INT WFC wide field archives comprising 330,000 images were mined to search for serendipitous encounters of known Near Earth Asteroids (NEAs) and Potentially Hazardous Asteroids (PHAs).
Badea, M., Badescu, T., Birlan, M., Char, F., Comsa, I., Constantinescu, M., Lacatus, D., Opriseanu, C., Paraschiv, A., Popescu, M., Sonka, A., Suciu, O., Tudorica, A., Vaduvescu, O., Vidican, D.   +14 more
core   +3 more sources

Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies

Meteoritics &Planetary Science, EarlyView.
Abstract CI1 chondrites are rare meteorites with high scientific value. In fact, they are the most chemically primitive meteorites and show evidence of intense parent‐body aqueous alteration. They also share strong similarities with samples from Ryugu and Bennu asteroids returned by the JAXA Hayabusa2 and NASA's OSIRIS‐REx missions.
J. Gattacceca, M. Gounelle, B. Devouard, J.‐A. Barrat, L. Bonal, A. J. King, C. Maurel, P. Beck, M. Roskosz, J.‐C. Viennet, D. Mukherjee, N. Dauphas, P. R. Heck, T. Yokoyama, K. López García, O. Poch, O. Grauby, C. S. Harrison, V. Vinogradoff, P. Vernazza, S. Tikoo, V. Vidal, P. Rochette, D. AuYang, D. Borschneck, J. Juraszek, B. Clark   +26 more
wiley   +1 more source

Approximation of asteroids gravitational fields by the gravitational doublet

Вісник Астрономічної школи, 2000
The possibility of the approximation of asteroids gravitational fields by the gravitational doublet (the problem of two fixed centers) is considered with the assumption, that asteroids can be represented as homogeneous ellipsoids of revolution or as ...
Yu. V. Aleksandrov, A. V. Portyankina
doaj   +1 more source

Speckle interferometry of asteroids [PDF]

This final report for NASA Contract NAGw-867 consists of abstracts of the first three papers in a series of four appearing in Icarus that were funded by the preceding contract NAGw-224: (1) Speckle Interferometry of Asteroids I.
Drummond, Jack
core   +1 more source

Eclipse Prediction and Orbit Improvement for Asteroids: Theory and Application to Near Earth Asteroids [PDF]

arXiv, 2005
Asteroids can be eclipsed by other bodies in the Solar System, but no direct observation of an asteroid eclipse has been reported to date. We describe a statistical method to predict an eclipse for an asteroid based on the analysis of the orbital elements covariance matrix.
arxiv  

A complete inventory of institutional and public meteorite collections in Switzerland

Meteoritics &Planetary Science, EarlyView.
Abstract Museums and universities are important for collecting, maintaining, and curating meteorites. To make specimens known and available for research, inventorying and optimal curation are important. However, not all meteorite collections are well curated, especially in smaller institutions.
J. Eschrig, M. M. M. Meier, B. A. Hofmann   +2 more
wiley   +1 more source

Candidate Main-belt Asteroids for Surface Heterogeneity

The Astronomical Journal
Large terrestrial bodies in our solar system like the Earth, Mars, Mercury, and the Moon exhibit geologically complex surfaces with compositional heterogeneity.
Sunao Hasegawa, Michaël Marsset, Francesca E. DeMeo, Josef Hanuš, Richard P. Binzel, Schelte J. Bus, Brian Burt, David Polishook, Cristina A. Thomas, Jooyeon Geem, Masateru Ishiguro, Daisuke Kuroda, Pierre Vernazza   +12 more
doaj   +1 more source

Silicate–sulfide interaction within quenched melts of space weathered Ryugu grains

Meteoritics &Planetary Science, EarlyView.
Abstract The first few microns of the surface of airless bodies are subject to severe changes due to the harsh environment of space, known as space weathering. The Hayabusa2 sample return mission from the asteroid Ryugu provides the first opportunity to study these effects on a carbonaceous and hydrated body.
Sylvain Laforet, Hugues Leroux, Corentin Le Guillou, Maya Marinova, Adrien Néri, Adrien Teurtrie, Francisco de la Peña, Damien Jacob, Alexandre Fadel, David Troadec   +9 more
wiley   +1 more source