Results 21 to 30 of about 37,088 (220)

Perspective: Something Old, Something New? Review of Wasting and Other Mortality in Asteroidea (Echinodermata)

open access: yesFrontiers in Marine Science, 2019
Asteroids (Echinodermata) experience mass mortality events that have the potential to cause dramatic shifts in ecosystem structure. Asteroid wasting describes a suite of body wall abnormalities that can ultimately result in animal mortality.
Ian Hewson   +10 more
doaj   +1 more source

Using Neural Networks to Model Main Belt Asteroid Albedos as a Function of Their Proper Orbital Elements

open access: yesThe Planetary Science Journal, 2023
Asteroid diameters are traditionally difficult to estimate. When a direct measurement of the diameter cannot be made through either occultation or direct radar observations, the most common method is to approximate the diameter from infrared observations.
Zachary Murray
doaj   +1 more source

Thermography of Asteroid and Future Applications in Space Missions

open access: yesApplied Sciences, 2020
The Near-Earth Asteroid 162173 Ryugu is a C-type asteroid which preserves information about the ancient Solar System and is considered enriched in volatiles such as water and organics associated with the building blocks of life, and it is a potentially ...
Tatsuaki Okada
doaj   +1 more source

Nature of bright C-complex asteroids [PDF]

open access: yes, 2020
Most C-complex asteroids have albedo values less than 0.1, but there are some high-albedo (bright) C-complex asteroids with albedo values exceeding 0.1. To reveal the nature and origin of bright C-complex asteroids, we conducted spectroscopic observations of the asteroids in visible and near-infrared wavelength regions.
arxiv   +1 more source

Planetary defense with the Double Asteroid Redirection Test (DART) mission and prospects

open access: yesNature Communications, 2023
NASA’s Double Asteroid Redirection Test (DART) mission intentionally impacted the asteroid Dimorphos on September 26, 2022, and this kinetic impact changed Dimorphos’ orbit around its binary companion Didymos.
Andrew S. Rivkin, Andrew F. Cheng
doaj   +1 more source

Impact observations of asteroid Dimorphos via Light Italian CubeSat for imaging of asteroids (LICIACube)

open access: yesNature Communications, 2023
On September 26th 2022, LICIACube monitored Double Asteroid Redirection Test (DART) mission impact on asteroid Dimorphos, which is the smaller component of a binary asteroid system.
Elisabetta Dotto, Angelo Zinzi
doaj   +1 more source

Asteroids and Comets [PDF]

open access: yes, 2015
Asteroids and comets are remnants from the era of Solar System formation over 4.5 billion years ago, and therefore allow us to address two fundamental questions in astronomy: what was the nature of our protoplanetary disk, and how did the process of planetary accretion occur?
Laura Woodney   +3 more
openaire   +2 more sources

MONET: The Minor Body Generator Tool at DART Lab

open access: yesSensors
Minor bodies exhibit considerable variability in shape and surface morphology, posing challenges for spacecraft operations, which are further compounded by highly non-linear dynamics and limited communication windows with Earth.
Carmine Buonagura   +2 more
doaj   +1 more source

OBSERVATION OF ASTEROID OCCULTATIONS WITH HELP OF THE METHOD OF TEMPORAL UNSQUEEZING CCD-IMAGES IN 2006

open access: yesOdessa Astronomical Publications, 2017
Description of the method of temporal unsqueezing CCD-images is presented for observations of asteroids occultations. The method was applied for observations of 9 asteroid occultations with telescope AZT - 8 (D = 0.7m, F = 2.8m) and CCD ST - 8MXE in ...
F. I. Kravtsov, I. V. Lukyanyk
doaj   +1 more source

Design and ballistic analysis of the mission for long-term study of the asteroid Apophis by a nanosatellite with an electric rocket propulsion system

open access: yesКосмические аппараты и технологии, 2020
The paper considers non-spherical objects with low gravitational attraction, such as asteroids, satellites of the planet and comets. We considered possibility of a mission to small bodies of the solar system of irregular shape on the example of the ...
O. L. Starinova   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy