Speckle interferometry measurements of the asteroids 10-Hygiea and 15-Eunomia
R. Ragazzoni 1,
A. Baruffolo 1,
E. Marchetti 2,
A. Ghedina 2,
J. Farinato 3 and
T. Niero 4
Received 1 June 1999 / Accepted 19 November 1999
Speckle interferometry measurements of the asteroids 10-Hygiea and 15-Eunomia have been obtained with the speckle facility aboard the AdOpt@TNG module, permanently mounted on the 3.58m TNG telescope in Canary Islands. Direct angular diameter measurements and estimates of the apparent ellipticity are given allowing to derive the density of these asteroids, combining our data with published results. Our data for 15-Eunomia, moreover, are compatible with both an egg-shaped and a double, in contact, asteroid model. A brief discussion of both models is here presented.
Key words: methods: data analysis techniques: interferometric minor planets, asteroids
Send offprint requests to: R. Ragazzoni
This article contains no SIMBAD objects.
© European Southern Observatory (ESO) 2000
Online publication: January 31, 2000