Results 71 to 80 of about 7,841,985 (153)
Rotation periods for small main-belt asteroids
, 2004 The results of new CCD observations are presented as part of the campaign we are performing in Brazil to measure rotational periods for small asteroids. The observations presented here have been acquired at the Pico dos Dias Observatory between 1997 and ...
D. Lazzaro +3 more
core +1 more source
Effects of Comet Encke's Meteoroid Stream on the Seasonal Variation of Mercury's Ca Exosphere
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Mercury's calcium (Ca) exosphere, observed by NASA's MESSENGER mission, exhibits high temperatures (>50000 K) and pronounced seasonal variability, with its source mainly on the dawn side. Enhanced Ca emission near True Anomaly Angle (TAA) ∼25° and ∼150° has been attributed to Comet 2P/Encke meteoroid streams.
M. Moroni +18 more
wiley +1 more source
The Size Frequency Distribution of Small Main-Belt Asteroids [PDF]
, 2012 The asteroid size distribution informs us about the formation and composition of the Solar System. We build on our previous work in which we harvest serendipitously observed data of the Taurus region and measure the brightness and size distributions of ...
Hines, Dean C. +6 more
core
Physical characterization of main-belt asteroids
, 2013 The 4th Release of the Sloan Digital Sky Survey Moving Object Catalog (SDSS-MOC) contains nearly 500,000 moving object detections from 519 observing runs obtained up to March 2007. Of these observations, 2150 were selected based on the criteria that they
Truong, Thien-Tin
core +1 more source
Meteoritics &Planetary Science, Volume 61, Issue 6, Page 1077-1094, June 2026.Abstract Samples returned by NASA's OSIRIS‐REx mission from the carbonaceous asteroid (101955) Bennu hold clues about conditions in the early solar system and the formation of planetary bodies. Initial investigation of Bennu samples found that they are rich in phyllosilicates and other secondary minerals formed during aqueous alteration of a larger ...
A. J. King +8 more
wiley +1 more source
Asteroid resource map for near-Earth space [PDF]
, 2011 Most future concepts for the exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this required mass from the Earth’s surface increases cost due to the large energy input necessary to move mass out of the ...
Sanchez Cuartielles, Joan-Pau +1 more
core +3 more sources
Archives of impact: The politics of craters on Earth
Geographical Research, Volume 64, Issue 2, May 2026.This paper examines Earth’s 195 confirmed impact craters as archives, exploring their cataloguing and presentation as heritage sites. It argues Western scientific framings using military language and emphasising catastrophe overlook settler colonialism’s violent histories and marginalise indigenous earth‐sky cosmologies.
Gareth Hoskins
wiley +1 more source
Detection of Hydration on Nominally Anhydrous S-complex Main Belt Asteroids
The Planetary Science JournalWe present the results of a survey of nominally anhydrous main belt S-complex asteroids. Thirty-three observations of 29 unique asteroids were obtained using the IRTF+SpeX instrument in prism and LXD short modes.
Maggie McAdam +4 more
doaj +1 more source
, 2018 International audienceDifferentiated asteroids are rare in the main asteroid belt despite evidence for ˜100 distinct differentiated bodies in the meteorite record.
Burt, Brian +7 more
core +4 more sources
Insights on the Rotational State and Shape of Asteroid (203) Pompeja from TESS Photometry
The Planetary Science JournalThe Main Belt asteroid (203) Pompeja shows evidence of extreme variability in visible and near-infrared spectral slope with time. The observed spectral variability has been hypothesized to be attributed to spatial variations across Pompeja’s surface.
Oriel A. Humes, Josef Hanuš
doaj +1 more source