A project aiming at a better knowledge and understanding of the physical parameters such as rotation, shape and surface composition of the Hilda asteroids has been undertaken by us in the last 5 years. This is also complemented with dynamical studies of the Hilda population.
At this moment CCD photometry has been obtained of 47 Hilda asteroids. Interesting "high lights" are the very large light curve amplitude of 2483 Guinevere and the very fast rotation of 3415 Danby.
High S/N CCD reflectance spectra have been obtained for a large part of the numbered population. The result are presented in two papers. You can find the abstracs below.
Some sample reflectance spectra of 4 Hilda asteroids can be found here
Orbital evolution studies of the Hilda asteroids by numerical integration in a Earth to Neptune Solar System model have been performed. All Hilda asteroids are in very stable orbits and no sign of chaotic behaviour are seen in this 2 million year integration.
The first paper on the Hilda asteroids is published in Astronomy & Astrophysics (1995) 302, 907. You can also read it here A Study of Hilda Asteroids I. CCD Spectroscoopy of Hilda Asteroids. If you first want to read the abstract, you can find it here
The second paper is published in Astronomy & Astrophysics (1997) 323, 606. You can also read it here A Study of Hilda Asteroids II. Compositional implications from optical spectroscopy or you can read the abstract here The third paper is accepted for publication in Astronomy & Astrophysics. You can read it here A Study of Hilda Asteroids III. Collision velocities and collision frequencies of Hilda asteroids or you can read the abstract here The fifth paper was published in Icarus 1998. You can read it here A Study of Hilda Asteroids V. Lightcurves of 47 Hilda asteroids or you can read the abstract hereThe sixth paper, A Study of Hilda Asteroids VI. Analysis of the lightcurve properties, is submitted for publication in Icarus
A paper dedicated to the asteroid 153 Hilda was published in Earth, Moon, and Planets, 71, 189. The abstract can be found here