Results 31 to 40 of about 89,298 (260)

THE CONDITIONS FOR APOPHIS 99942 APPROACHING EARTH IN 2029

Odessa Astronomical Publications, 2009
The discovery of Apophis 99942 asteroid in 2004 raised a number of questions in the sphere of the asteroid threatening. On April 13, 2029, the asteroid is to pass at a close distance from Earth.
A. A. Tokovenko, А. А. Bazey
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

Космические 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, E. A. Sergaeva, A. Yu. Shornikov   +2 more
doaj   +1 more source

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

The 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

MONET: The Minor Body Generator Tool at DART Lab

Sensors
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, Mattia Pugliatti, Francesco Topputo   +2 more
doaj   +1 more source

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

Odessa 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

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

Nature 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

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

Advanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen, Etienne Beier, Francisco Peña‐Camargo, Jarla Thiesbrummel, Gianluca Boccarella, Paria Forozi Sowmeeh, Martin Stolterfoht, Dieter Neher, Kai Oliver Brinkmann, Thomas Riedl, Felix Lang   +10 more
wiley   +1 more source

Feed-Forward Neural Network Denoising Applied to Goldstone Solar System Radar Images

Remote Sensing, 2022
The study of Near-Earth Asteroids (NEA) is crucial for human safety. Small hazardous asteroids with small radar cross sections are not easy to detect, track, and characterize due to the small signal-to-noise ratio (SNR) of the radar echo. This manuscript
Nereida Rodriguez-Alvarez, Joseph S. Jao, Joan Francesc Munoz-Martin, Clement G. Lee, Kamal Oudrhiri   +4 more
doaj   +1 more source

Rotationally Resolved Spectroscopy of Asteroid Pairs: No Spectral Variation Suggests Fission is followed by Settling of Dust

, 2014
We examine the spectral properties of asteroid pairs that were disrupted in the last 2 Myrs to examine whether the site of the fission can be revealed.
Binzel, Richard P., DeMeo, Francesca, Moskovitz, Nicholas, Polishook, David   +3 more
core   +1 more source

Dynamic autonomous intelligent control of an asteroid lander [PDF]

, 2010
One of the future flagship missions of the European Space Agency (ESA) is the asteroid sample return mission Marco-Polo. Although there have been a number of past missions to asteroids, a sample has never been successfully returned.
Bernstein D. S., Bertram R. E., Bertram R. E., McInnes C. R., Taylor J.   +4 more
core   +1 more source