Results 61 to 70 of about 8,179,561 (212)

JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu

The Planetary Science Journal
The new Polana collisional family is the hypothesized origin of the near-Earth asteroids (101955) Bennu, which was the target of the NASA OSIRIS-REx mission, and (162173) Ryugu, which was the target of the JAXA Hayabusa2 mission.
Anicia Arredondo, Tracy M. Becker, Maggie M. McAdam, Andrew S. Rivkin, Stephanie Jarmak, Ian Wong   +5 more
doaj   +1 more source

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

Astronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth, Paško Roje, Stella Vješnica, Stefan Cikota, Alex J. Brown, Mike Kretlow, Marco Azzaro, Santiago Reinhart, Jesús Aceituno, Harry Dawson, Carsten Denker, Torsten Enßlin, Stephan Geier, Thomas Granzer, Thomas Kupfer, Gianluca Li Causi, Samaya Nissanke, José Luis Ortiz, Fernando Pedichini, Katja Poppenhäger, Axel Schwope   +20 more
wiley   +1 more source

Polarimetric survey of main-belt asteroids

, 2019
Aims. We present the results of a polarimetric survey of main-belt asteroids at Complejo Astronómico El Leoncito (CASLEO), San Juan, Argentina. The aims of this survey are to increase the database of asteroid polarimetry and to estimate the diversity in ...
C. López-Sisterna, E. García-Migani, R. Gil-Hutton   +2 more
core   +1 more source

The WISE Survey of the Albedo Distribution of Main Belt Asteroids

, 2010
Using date from the Wide-field Infrared Survey Explorer (WISE) we investigate the albedo distribution across the main belt of asteroids.
Mueller, M., Mainzer, A., Masiero, J., Delbó, M., WISE Team, [No Value], Grav, T.   +5 more
core   +1 more source

Determinations of Asteroid Masses Using Mutual Encounters Observed in the Legacy Survey of Space and Time

The Planetary Science Journal
Using published simulations of the 10 yr Legacy Survey of Space and Time (LSST), we forecast its ability to determine the masses of individual main-belt asteroids (MBAs) through precise astrometry of any pairs of the ≈1.2 million known MBAs undergoing ...
Gary M. Bernstein, Negin Najafi, Daniel C. H. Gomes   +2 more
doaj   +1 more source

Structural Evolution of Antigorite by High‐Velocity Impacts

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Serpentine is a major hydrous mineral present in hydrous asteroids that have evolved through planetary impacts. Understanding its dynamic behavior is essential to elucidate the redistribution and retention of water during high‐velocity impact processes. The shock response of antigorite was examined at pressures up to 106 GPa using laser‐driven
Yuhei Umeda, Yusuke Seto, Naotaka Tomioka, Hiroshi Arima‐Osonoi, Yoichiro Hironaka, Yuichi Inubushi, Kento Katagiri, Ryosuke Kodama, Kohei Miyanishi, Hirotaka Nakamura, Norimasa Ozaki, Tomoko Sato, Keiichi Sueda, Tadashi Togashi, Toshinori Yabuuchi, Makina Yabashi, Toshimori Sekine, Takuo Okuchi   +17 more
wiley   +1 more source

Diameter estimations of main belt asteroids, Jet Propulsion Laboratory : Interoffice Memorandum

, 2001
Diameter estimations of main belt asteroids, Jet Propulsion Laboratory : Interoffice ...
Standish, M., Fienga, Agnès
core   +1 more source

Gaia and IRTF abundance of A-type main-belt asteroids

Astronomy & Astrophysics
Context. The so-called missing-mantle problem is a long-standing issue in planetary science. It states that olivine-rich asteroids should be abundant in the main belt, while this is observationally found not to be the case by dedicated surveys ...
Delbo M., Avdellidou C., Galinier M., Bhat U., Dyer T., Bolin B. T., Galluccio L.   +6 more
doaj   +1 more source

The role of composition in the spectral evolution of carbonaceous asteroids as informed by Bennu sample return

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1875-1904, August 2026.
Abstract Near‐Earth rubble‐pile asteroids Bennu and Ryugu are part of the carbonaceous taxonomic complex (C‐complex), and samples returned from both bodies resemble the most aqueously altered carbonaceous chondrites. However, telescopic and spacecraft visible–near infrared (VIS–NIR) reflectance spectra of Ryugu exhibit a red (positive) spectral slope ...
Ralph E. Milliken, Takahiro Hiroi, Victoria E. Hamilton, Cody D. Schultz, Ed A. Cloutis, Hannah H. Kaplan, Melissa K. Kontogiannis, Nathalia Vega‐Santiago, Dani N. DellaGiustina, Harold C. Connolly Jr., Dante S. Lauretta   +10 more
wiley   +1 more source

Boosting decision trees for the selection of main belt asteroids in planetary ephemerides: An alternative model

Astronomy & Astrophysics
Context. 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, Fienga Agnès, Murray Zachary, Gastineau Mickaël, Laskar Jacques   +4 more
doaj   +1 more source