The high angular resolution allowed astronomers to see surface details as small as 46 kilometers (30 miles), about the size of the San Francisco Bay area. [12] As of 2010[update], Baer suggests Davida has a mass of (3.84±0.20)×1019 kg. Finder chart. Because the asteroids were formed and shaped by collisions, a process that also affected the Earth, Moon, and planets, these studies will also help astronomers understand the history and evolution of the solar system. Davida est nommé d' après David Peck Todd, professeur d'astronomie à l' Amherst College. The techniques used at the W.M. Surface features can reveal a history of large impacts or variations in the composition that should, in turn, further help us understand the asteroid’s history. They collide with each other and have impacted the Earth, Moon, and planets over time. The (511) in Davida’s name means it was the 511th asteroid to be discovered and included in the list of asteroids maintained by the International Astronomical Union. It is one of the ten most-massive asteroids, and the 7th-largest asteroid.
Keck Observatory allow astronomers to measure the distortion of light caused by the atmosphere and rapidly make corrections, restoring the light to near-perfect quality. Un article de Wikipédia, l'encyclopédie libre, modèle 3D de Davida basé sur la modélisation courbe de lumière, Creative Commons Attribution-ShareAlike 3.0 Unported License, Wikimedia Commons propose des documents multimédia, This page is based on the copyrighted Wikipedia article. Il est d' environ 270 à 310 km de diamètre et comprend environ 1,5% de la masse totale de la ceinture d' astéroïdes. Click to enlarge. Without adaptive optics, critical surface information and details about the asteroid’s shape are lost. Davida (minor planet designation: 511 Davida) is a large C-type asteroid in the asteroid belt.It was discovered by R. S. Dugan in 1903. While scientists could see the asteroid spinning, only the northern hemisphere was visible. Asteroid 511 Davida will be well placed, lying in the constellation Gemini, well above the horizon for much of the night.. The facet is presumably a 150-km global-scale crater like the ones seen on 253 Mathilde. Study of the asteroid’s shape, size, and surface features helps us understand how these collisions operate and thus how our planet was, and still is, being affected by these impacts.”. Davida est l' un des rares astéroïdes ceinture principale dont la forme a été déterminée par observation visuelle au sol. The asteroid 511 Davida. Davida is named after David Peck Todd, an astronomy professor at Amherst College. Initial evaluation of the images reveal some dark features, and scientists are still working to understand to what extent these are surface markings, topographical features, or artifacts of the image processing. It is one of the ten largest and most-massive asteroids. These observations are among the first high-resolution, ground-based pictures of large asteroids, made possible only through the use of adaptive optics on large telescopes. L'astéroïde est pas une planète naine : il y a au moins deux promontoires et au moins une facette plate avec des écarts de 15 km d'un meilleur ajustement ellipsoïde .
The asteroid is not a dwarf planet: there are at least two promontories and at least one flat facet with 15-km deviations from a best-fit ellipsoid. Asteroids are the collection of rocky objects orbiting between Mars and Jupiter.
This research will help improve understanding of how asteroids were formed and provide information about their compositions and structures. Il a été découvert par RS Dugan en 1903. Il est l' un des dix astéroïdes les plus massifs, et le 7e plus grand astéroïde. [13] Two examples shown here. De 2002 à 2007, les astronomes de l' Observatoire Keck ont utilisé le télescope Keck II, qui est équipé d' une optique adaptative , pour photographier Davida. While these space telescopes and space missions are still needed for complete study of the asteroids, ground-based observations such as these will help tremendously in planning the mission observations and focusing the resources where they will be most effective.”. “Asteroid Davida was discovered 100 years ago, but this is the first time anyone has been able to see this level of detail on this object,” said Dr. Al Conrad, scientist at the W.M. En 2010, Baer suggère Davida a une masse de ( 7000384000000000000 ♠3,84 ± 0,20 ) × 10 19 kg. “With adaptive optics, we’re finally able to transform asteroids like Davida from a single, faint point-source into an object of true geological study.”. Davida est nommé d' après David Peck Todd , professeur d'astronomie à l' Amherst College . Keck Observatory is operated by the California Association for Research in Astronomy, a scientific partnership of the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. Details on orbits and basic physical parameters are sourced from the Minor Planet Center and NASA JPL.
images (, James Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity. At that time, Davida’s angular diameter was less than one-ten-thousandth of a degree, about the size of a quarter as seen from a distance of 18 kilometers (11 miles). A sequence of images of asteroid (511) Davida, spanning slightly more than one hour, as it rotates on Dec. 26, 2002. Keck Observatory; Christophe Dumas, Jet Propulsion Laboratory; William Merline, Southwest Research Institute; Heidi Hammel, Space Science Institute; and Thierry Fusco, Onera, France. Conrad et al. One need only look at the scarred surface of our Moon to see the cumulative result. Asteroid (511) Davida was discovered by R. S. Dugan in 1903 in Heidelberg, Germany. Il y a eu 9 occultations événements observés depuis 1987, dont beaucoup ont produit deux ou trois accords . ” Asteroid Davida was discovered 100 years ago, but this is the first time anyone has been able to see this level of detail on this object,” said Dr. Al Conrad, scientist at the W.M. Please wait Loading 0 /4 Click and drag to rotate Mouse wheel to zoom in/out Touch with mouse to dismiss Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Davida ( désignation mineur planète: 511 Davida) est un grand type C astéroïde dans la ceinture d'astéroïdes. Keck Observatory, Kamuela, HI; 808-881-3812. Il est l' un des dix astéroïdes les plus massifs , et le 7e plus grand astéroïde. ", "Baer Mass of 511 Davida" 0.220 / "Mass of Mbelt" 15 = 0.0146, "Asteroid 511 Davida – Nesvorny HCM Asteroid Families V3.0", "High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants", "Determination of asteroid masses (6) Hebe, (10) Hygiea, (15) Eunomia, (52) Europa, (88) Thisbe, (444) Gyptis, (511) Davida and (704) Interamnia", "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris", https://en.wikipedia.org/w/index.php?title=511_Davida&oldid=967598158, Creative Commons Attribution-ShareAlike License, This page was last edited on 14 July 2020, at 06:00. Davida (minor planet designation: 511 Davida) is a large C-type asteroid in the asteroid belt.