Spins, shapes, and orbits for near-Earth objects by Nordic NEON

The Nordic Near-Earth-Object Network (NEON) observing program accrues knowledge about the physical and dynamical properties of near-Earth objects (NEOs) using state-ofthe-art inverse methods. Photometric and astrometric observations are being carried out at the Nordic Optical Telescope. Here, the NEON observations from June 2004 - September 2006 are reviewed. Statistical orbital inversion is illustrated by the application of the so-called Volume-of-Variation method to NEON observations. Spins and shapes are characterized using shape models that allow analytical computation of disk-integrated brightnesses in arbitrary illumination and observation geometries for Lommel-Seeliger and Lambert scattering laws. The analytical treatment allows error analyses for the spins and shapes using large numbers of discrete sample solutions to the statistical inverse problem. Currently, statistical spin and shape solutions have been derived for 2002 FF12, 2003 MS2, 2003 RX7, 2004 HW as well as for (1685) Toro and (1981) Midas. For (1862) Apollo, an unambiguous spin and shape solution has been obtained using the convex inversion method.