Results 111 to 120 of about 22,935 (221)

SPECTROPHOTOMETRIC STUDIES OF ASTEROIDS II: TAXONOMIC TYPE

Eurasian Physical Technical Journal
Analysis of spectral observations of a number of Main Belt asteroids, the Apollo family asteroid (NEO) 30825 (1990 TG1), and the rare asteroid 1951 Lick was used to determine their taxonomic types.
G.K. Aimanova, A.V. Serebryanskiy, M.P. Shcherbina, M.A. Krugov   +3 more
doaj   +1 more source

Asteroids

, 1981
Asteroids game cartridge for the Atari ...
Atari, Inc.
core   +2 more sources

Semi-analytical guidance algorithm for autonomous close approach to non-cooperative low-gravity targets [PDF]

, 2014
An adaptive guidance algorithm for close approach to and precision landing on uncooperative low-gravity objects (e.g. asteroids) is proposed. The trajectory, updated by means of a minimum fuel optimal control problem solving, is expressed in a polynomial
Armellin, Roberto, Armellin, R, Michele, Lavagna, Lunghi, Paolo, LAVAGNA, MICHÈLE, Lunghi, P, Lavagna, M   +6 more
core  

Spectroscopy of D-type asteroids [PDF]

, 1992
We have performed a spectroscopic survey of 19 D-type asteroids. Comparison with previous photometry shows excellent agreement. Although the majority have similar colors to cometary nuclei, no cometary emission bands were present in any of the spectra ...
Dahlgren, Mats, Williams, I. P., Magnusson, Per, Lagerkvist, C.-I., Fitzsimmons, Alan   +4 more
core  

Identifying LL Chondrite Near-Earth Asteroids Using LL Chondrite Reflectance Spectra

The Astrophysical Journal Letters
Most near-Earth objects are thought to originate from the collisional fragments of the main asteroid belt. One question that remains to be resolved is the proportion of near-Earth objects sampling the core area material of the parent body to the outer ...
Pengyue Wang, Edward Cloutis, Ye Su, Man-To Hui   +3 more
doaj   +1 more source

Asteroids

, 2005
This radio broadcast discusses the renewed interest among space scientists in studying asteroids. Once disdained as uninteresting, asteriods are now considered to represent pristine material, essentially unchanged since the formation of the solar system.

core  

Asteroid Albedo and Size Inversion: A Deep Learning Method and Application Based on Multiparameters

The Astrophysical Journal Supplement Series
Of nearly 1.5 million asteroids discovered to date, only about 5% have spectroscopic observations, resulting in limited physical property coverage. Multicolor photometry provides taxonomic classifications for the majority of asteroids.
Jiayi Ge, Xiaoming Zhang, Juan Li, Yindi Zhang, Xiaojun Jiang   +4 more
doaj   +1 more source

On the orbital (in)stability of Trojan asteroids in the solar system

, 2013
Jupiter and Neptune have currently large populations of asteroids orbiting about their L4 and L5 Lagrange points, also called Trojan asteroids. Because Trojans can evolve on stable orbits with lifetimes over Gyr, the study of these objects can provide ...
Lykawka, Patryk Sofia, Horner, Jonathan, Mueller, Thomas   +2 more
core  

Are Asteroids Rubble Piles?

, 1998
This page discusses the rubble pile model of asteroids. In it the author maintains that this model provides a better match to observational constraints and new results from numerical impact simulations than other competing models.
Bottke, William F. (William Frederick), 1966-
core  

Publisher Correction: Diverse configurations of binary asteroids explained by multi-generation satellites. [PDF]

Nat Commun
Dai WY, Cheng B, Huang Y, Jiao Y, Zhou WH, Ren KY, Agrusa H, Jacobson S, Kokubo E, Charnoz S, Yu Y, Baoyin H, Li J.   +12 more
europepmc   +1 more source