Results 61 to 70 of about 447,866 (197)
HIGH-PRECISION FOLLOW-UP OBSERVATIONS OF NEAR-EARTH OBJECTS
Odessa Astronomical Publications, 2018 Main objective of the study is orbit refinement of Near-Earth Objects (NEOs) as part of the global task of asteroid-cometary hazard. We present the latest results of ongoing high-precision astrometric follow-up observations of NEOs using the Mykolaiv ...
N. V. Maigurova +2 more
doaj +1 more source
Identifying LL Chondrite Near-Earth Asteroids Using LL Chondrite Reflectance Spectra
The Astrophysical Journal LettersMost 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 +3 more
doaj +1 more source
Some considerations on measuring the Newtonian gravitational constant G in an orbiting laboratory [PDF]
A common suggestion for measuring the Newtonian gravitational constant G in a near-earth orbiting laboratory is simply to put two balls in orbit around each other and observe the resulting motion, thereby determining G. However, the radial variation with
Baker, Stephen D.
core +1 more source
, 2016 Two primitive near Earth asteroids, (101955) Bennu and (162173) Ryugu, will be visited by a spacecraft with the aim of returning samples back to Earth.
Alí-Lagoa, Víctor +7 more
core +1 more source
Computer Aided Near Earth Object Detection [PDF]
Symposium - International Astronomical Union, 1994 The Spacewatch program at the University of Arizona has pioneered automatic methods of detecting Near Earth Objects. Our software presently includes three modes of object detection: automatic motion identification; automatic streak identification; and visual streak identification. For automatic motion detection at sidereal drift rates, the 4σ detection
openaire +1 more source
Modeling Linear Polarization of the Didymos–Dimorphos System before and after the DART Impact
The Planetary Science JournalWe analyze the polarization observations of the Didymos–Dimorphos system before and after the impact by the NASA Double Asteroid Redirection Test spacecraft on Dimorphos.
Antti Penttilä +6 more
doaj +1 more source
Automated detection of asteroids in real-time with the Spacewatch telescope [PDF]
The Spacewatch telescope on Kitt Peak is being used to survey for near-earth asteroids using a Tektronix TK2048 CCD in scanning mode. We hope to identify suitable low delta v candidates amongst the near-earth asteroid population as possible exploration ...
Gehrels, T. +2 more
core +1 more source
Optical surveys for space debris [PDF]
, 2018 Space debris—man-made non-functional objects of all sizes in near-Earth space—has been recognized as an increasing threat for current and future space operations. The debris population in near-Earth space has therefore been extensively studied during the
Schildknecht, Thomas
core
The Planetary Science JournalNear-Earth Object (NEO) Surveyor will detect asteroids and comets using mid-infrared thermal emission, however ground-based followup resources will require knowledge of the expected visible light brightness in order to plan characterization observations.
Joseph R. Masiero +4 more
doaj +1 more source
Earth-approaching asteroids: Populations, origin, and compositional types [PDF]
Origin, physical properties, and discovery history of smaller asteroids are reviewed. They appear to link the main belt objects, namely the comets and meteorites.
Helin, E. F., Shoemaker, E. M.
core +1 more source