Journal Article10.1086/116062
Asteroid and comet orbits using radar data
52
TL;DR: For the 30 asteroids and 4 comets for which radar astrometric data were given by Ostro (1991), orbits have been computed using both the radar and the existing optical measurements.
read more
Abstract: For the 30 asteroids and 4 comets for which radar astrometric data were given by Ostro (1991), orbits have been computed using both the radar and the existing optical measurements. The techniques required to process radar data in orbit determination solutions are outlined, and future radar observation opportunities for asteroids and comets are identified. For asteroids and comets that have only short intervals of optical astrometric data, the additional use of only a few radar observations allows a far more accurate extrapolation of their future motions. The use of radar data can often ensure an object's successful recovery at future earth returns and greatly assist efforts in monitoring the motions of the rapidly growing population of known near-earth objects, including their future close-earth approaches.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Orbit and bulk density of the OSIRIS-REx target Asteroid (101955) Bennu
Steven R. Chesley,Davide Farnocchia,Michael C. Nolan,David Vokrouhlický,Paul W. Chodas,Andrea Milani,Federica Spoto,Benjamin Rozitis,Lance A. M. Benner,William F. Bottke,Michael W. Busch,Joshua P. Emery,Ellen S. Howell,Dante S. Lauretta,Jean-Luc Margot,Patrick A. Taylor +15 more
TL;DR: The OSIRIS-REx asteroid sample return mission target, (101955) Bennu (formerly 1999 RQ 36), is a half-kilometer near-Earth asteroid with an extraordinarily well constrained orbit as mentioned in this paper.
275
•Book
Theory of Orbit Determination
Andrea Milani,Giovanni F. Gronchi +1 more
- 01 Nov 2009
TL;DR: In this article, the problem of orbit determination is addressed and the N-body problem is used to identify weakly determined trajectories of a planet. But the problem is not solved in detail.
Planetary radar astronomy
TL;DR: Radar is a powerful technique that has furnished otherwise unavailable information about solar system bodies for three decades as mentioned in this paper, and the advantages of radar in planetary astronomy result from (1) the observer's control of all the attributes of the coherent signal used to illuminate the target, especially the wave form's time/frequency modulation and polarization; (2) the ability of radar to resolve objects spatially via measurements of the distribution of echo power in time delay and Doppler frequency; (3) the pronounced degree to which delay-Doppler measurements constrain orbits and spin vectors;
246
Yarkovsky Effect on Small Near-Earth Asteroids: Mathematical Formulation and Examples
David Vokrouhlický,David Vokrouhlický,David Vokrouhlický,Andrea Milani,Andrea Milani,Andrea Milani,S. R. Chesley,S. R. Chesley,S. R. Chesley +8 more
TL;DR: In this article, the authors investigated the possibility of detecting the Yarkovsky effect via precise orbit determination of near-Earth asteroids, which is feasible only with the existence of precise radar astrometry at multiple apparitions.
196
Asteroid Radar Astronomy
Steven J. Ostro,R. S. Hudson,Lance A. M. Benner,J. D. Giorgini,Christopher Magri,Jean-Luc Margot,Michael C. Nolan +6 more
- 01 Jan 2002
TL;DR: Ostro et al. as mentioned in this paper summarized specific results for radar-detected asteroids, which span 4 or-ders of magnitude in diameter and rotation period, and summarized the major conclusions drawn from the exponential increase in data, and discuss current problems and chal- lenges to be faced during the coming decade.