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Encyclopedia > 511 Davida


511 Davida
Discovery
Discoverer R. S. Dugan
Discovery Date May 30, 1903
Alternate Designations 1903 LU
Category Main belt
Orbital Elements
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.185
Semi-Major Axis (a) 473.742 Gm (3.167 AU)
Perihelion (q) 385.946 Gm (2.580 AU)
Aphelion (Q) 561.538 Gm (3.754 AU)
Orbital Period (P) 2058.370 d (5.64 a)
Mean Orbital Speed 16.59 km/s
Inclination (i) 15.936°
Longitude of the
Ascending Node (Ω)		 107.683°
Argument of Perihelion (ω) 338.694°
Mean Anomaly (M) 124.997°
Physical Characteristics
Dimensions 326.1 km
Mass 3.6×1019 kg
Density 2.0 g/cm³
Surface Gravity 0.0911 m/s²
Escape Velocity 0.1724 km/s
Rotation Period 0.2137 d 1 (http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm)
Spectral Class C
Absolute Magnitude 6.22
Albedo 0.054–0.066 2 (http://www.psi.edu/pds/archive/astdata/ALBEDOS/albedos.tab)
Mean Surface Temperature ~218 K

511 Davida is a main belt asteroid. It was discovered by R. S. Dugan in 1903. It is one of the largest asteroids, measuring 326km in diameter, and is a C-type asteroid, which means that it is dark in colouring with a carbonate composition.


Davida is one of the few main belt asteroids whose shape has been determined by ground-based visual observation. In 2002, astronomers at the Keck Observatory used the Keck II telescope, which is fitted with adaptive optics, to photograph Davida. The image revealed a semi-oblong object with at least two flat facets. Its rotation period is about 5 hours.


Davida is named after David Peck Todd, an astronomy professor at Amherst College.


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The Minor Planets
Vulcanoids | Main belt | Groups and Families | Near_Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper Belt | Oort Cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids)





  Results from FactBites:
 
511 Davida - Wikipedia, the free encyclopedia (162 words)
511 Davida (da-vee'-da ?) is a main belt asteroid.
It is thought to be the fifth largest known asteroid, measuring 326 km in diameter, and is a C-type asteroid, which means that it is dark in colouring with a carbonate composition.
Asteroid 511 Davida imaged by the Keck Observatory, December 2002.
  More results at FactBites »


 
 

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