B P Weiss

Publications (4)93.6 Total impact

• Article: Images of asteroid 21 Lutetia: a remnant planetesimal from the early Solar System.

  H Sierks, P Lamy, C Barbieri, D Koschny, H Rickman, R Rodrigo, M F A'Hearn, F Angrilli, M A Barucci, J-L Bertaux, [......], F Scholten, C Snodgrass, N Thomas, C Tubiana, P Vernazza, J-B Vincent, K-P Wenzel, T Andert, M Pätzold, B P Weiss
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  ABSTRACT: Images obtained by the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) cameras onboard the Rosetta spacecraft reveal that asteroid 21 Lutetia has a complex geology and one of the highest asteroid densities measured so far, 3.4 ± 0.3 grams per cubic centimeter. The north pole region is covered by a thick layer of regolith, which is seen to flow in major landslides associated with albedo variation. Its geologically complex surface, ancient surface age, and high density suggest that Lutetia is most likely a primordial planetesimal. This contrasts with smaller asteroids visited by previous spacecraft, which are probably shattered bodies, fragments of larger parents, or reaccumulated rubble piles.
  Science 10/2011; 334(6055):487-90. · 31.20 Impact Factor
• Article: Asteroid 21 Lutetia: low mass, high density.

  M Pätzold, T P Andert, S W Asmar, J D Anderson, J-P Barriot, M K Bird, B Häusler, M Hahn, S Tellmann, H Sierks, P Lamy, B P Weiss
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  ABSTRACT: Asteroid 21 Lutetia was approached by the Rosetta spacecraft on 10 July 2010. The additional Doppler shift of the spacecraft radio signals imposed by 21 Lutetia's gravitational perturbation on the flyby trajectory were used to determine the mass of the asteroid. Calibrating and correcting for all Doppler contributions not associated with Lutetia, a least-squares fit to the residual frequency observations from 4 hours before to 6 hours after closest approach yields a mass of (1.700 ± 0.017) × 10(18) kilograms. Using the volume model of Lutetia determined by the Rosetta Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) camera, the bulk density, an important parameter for clues to its composition and interior, is (3.4 ± 0.3) × 10(3) kilograms per cubic meter.
  Science 10/2011; 334(6055):491-2. · 31.20 Impact Factor
• Article: Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System

  H. Sierks, P. Lamy, C. Barbieri, D. Koschny, H. Rickman, R. Rodrigo, M. A'Hearn, F. Angrilli, Antonella Barucci, J.-L. Bertaux, Frank Scholten, C. Snodgrass, N. Thomas, C. Tubiana, P Vernazza, J.B. Vincent, K.-P. Wenzel, T. Andert, M Pätzold, B.P. Weiss
  Science 01/2011; 334:487-490. · 31.20 Impact Factor
• Article: Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System

  H. Sierks, P. Lamy, C. Barbieri, D. Koschny, H. Rickman, R. Rodrigo, M. A'Hearn, F. Angrilli, Antonella Barucci, J.-L. Bertaux, [......], Frank Scholten, C. Snodgrass, N. Thomas, C. Tubiana, P Vernazza, J.B. Vincent, K.-P. Wenzel, T. Andert, M Pätzold, B.P. Weiss
  [show abstract] [hide abstract]
  ABSTRACT: Images obtained by the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) cameras onboard the Rosetta spacecraft reveal that asteroid 21 Lutetia has a complex geology and one of the highest asteroid densities measured so far, 3.4 ± 0.3 grams per cubic centimeter. The north pole region is covered by a thick layer of regolith, which is seen to flow in major landslides associated with albedo variation. Its geologically complex surface, ancient surface age, and high density suggest that Lutetia is most likely a primordial planetesimal. This contrasts with smaller asteroids visited by previous spacecraft, which are probably shattered bodies, fragments of larger parents, or reaccumulated rubble piles.
  Science. 334(2011-10-01-6055):487-490.