Physical models of ten asteroids from an observers' collaboration network^*

¹ Astronomical Institute, Charles University in Prague V Holešovičkách 2, 18000 Prague, Czech Republic e-mail: durech@sirrah.troja.mff.cuni.cz
² Department of Mathematics and Statistics, Rolf Nevanlinna Institute, University of Helsinki, PO Box 68, 00014 Helsinki, Finland
³ Astronomical Observatory, A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland
⁴ Vintage Lane Observatory, 83 Vintage Lane, RD3, Blenheim, New Zealand
⁵ Geneva Observatory, 1290 Sauverny, Switzerland
⁶ Mt Tarana Observatory, PO Box 1537, Bathurst, NSW 2795, Australia
⁷ Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL 33965, USA
⁸ Observatoire des Engarouines, 84570 Mallemort-du-Comtat, France
⁹ Institut de mécanique céleste et de calcul des éphémérides, Observatoire de Paris, 77 Av. Denfert Rochereau, 75014 Paris, France
¹⁰ 295 Camberwarra Drive, Craigie, WA 6025, Australia
¹¹ Dept. of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA
¹² Stazione Astronomica di Sozzago, 28060 Sozzago, Italy
¹³ The WW Crow Observatory, 118 Mill Road, Hawley, Kent, DA2 7RT, England
¹⁴ Shed of Science Observatory, 5213 Washburn Ave. S., Minneapolis, MN 55410, USA
¹⁵ 67 Haslar Crescent, Waterlooville, Hampshire, PO7 6DD, England
¹⁶ Association AstroQueyras, Le Bois de Bardon, 16110 Taponnat, France
¹⁷ Groupe Européen d'Observations Stellaires (GEOS), 23 Parc de Levesville, 28300 Bailleau l'Evêque, France
¹⁸ Department of Astronomy, Whitin Observatory, Wellesley College, 106 Central Street, Wellesley, MA 02481, USA
¹⁹ Linhaceira Observatory, Instituto Politècnico de Tomar, 2300-313, Tomar, Portugal
²⁰ Illinois College, 1101 West College Avenue, Jacksonville, IL 62650, USA
²¹ Antelope Hills Observatory, 980 Antelope Drive West, Bennett, CO 80102, USA
²² Observatori Astronomic de Consell, Mallorca, Spain
²³ 2 rue des Écoles 34920, Le Crès, France
²⁴ Carbuncle Hill Observatory, PO Box 946, Coventry, RI 02816, USA
²⁵ Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland
²⁶ Observatoire de Blauvac, 84570 St-Estève, France
²⁷ Observatorio di Gnosca, 6525 Gnosca, Switzerland
²⁸ Goat Mountain Astronomical Research Station, 11355 Mount Johnson Court, Rancho Cucamonga, CA 91737, USA
²⁹ Palmer Divide Observatory, 17995 Bakers Farm Rd., Colorado Springs, CO 80908, USA

Received: 5 September 2006
Accepted: 14 December 2006

Abstract

Aims.We present physical models of ten asteroids obtained by means of lightcurve inversion. A substantial part of the photometric data was observed by amateur astronomers. We emphasize the importance of a coordinated network of observers that will be of extreme importance for future all-sky asteroid photometric surveys.

Methods.The lightcurve inversion method was used to derive spin states and shape models of the asteroids.

Results.We derived spin states and shape model for ten new asteroids: (110) Lydia, (125) Liberatrix, (130) Elektra, (165) Loreley, (196) Philomela, (218) Bianca, (306) Unitas, (423) Diotima, (776) Berbericia, and (944) Hidalgo. This increases the number of asteroid models up to nearly one hundred.