Search results
Results From The WOW.Com Content Network
Vesta (minor-planet designation: 4 Vesta) is one of the largest objects in the asteroid belt, with a mean diameter of 525 kilometres (326 mi). [10]
Rheasilvia / ˌ r iː ə ˈ s ɪ l v i ə / is the largest impact crater on the asteroid Vesta. It is 505 km (314 mi) in diameter, which is 90% the diameter of Vesta itself, and is 95% the mean diameter of Vesta, 529 km (329 mi). However, the mean is affected by the crater itself.
The Vesta family (adj. Vestian; FIN: 401) is a family of asteroids. The cratering family is located in the inner asteroid belt in the vicinity of its namesake and principal body, 4 Vesta. It is one of the largest asteroid families with more than 15,000 known members and consists of mostly bright V-type asteroids, so-called "vestoids".
4 Vesta: 525.4: March 29, 1807: Dawn: 2011–2012: 210: 0.76: Dawn broke orbit on 5 September 2012 and headed to Ceres, where it arrived in March 2015: First "big four" asteroid visited by a spacecraft, largest asteroid visited by a spacecraft at the time 21 Lutetia: 120×100×80: November 15, 1852: Rosetta: 2010: 3,162: 64.9: Flyby on 10 July 2010
The largest asteroid to be a true member of a family is 4 Vesta. (This is in contrast to an interloper, in the case of Ceres with the Gefion family.) The Vesta family is believed to have formed as the result of a crater-forming impact on Vesta. Likewise, the HED meteorites may also have originated from Vesta as a result of this collision. [98]
A large asteroid could pass close enough to Earth within the next decade that there's a chance it could strike the planet, according to NASA. The space rock, named 2024 YR4, is between 130 feet ...
Cratered terrain on 4 Vesta Except for the " big four " (Ceres, Pallas, Vesta, and Hygiea), asteroids are likely to be broadly similar in appearance, if irregular in shape. 50 km (31 mi) 253 Mathilde is a rubble pile saturated with craters with diameters the size of the asteroid's radius.
[4] For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 km with a density of 0.5 g/cm 3 , its true mass would be only 1.12 × 10 19 kg.