Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...82..354z&link_type=abstract
Icarus (ISSN 0019-1035), vol. 82, Dec. 1989, p. 354-368. Research supported by CNR and MPI.
Astronomy and Astrophysics
Astronomy
25
Asteroids, Astronomical Photometry, Light Curve, Planetary Rotation, Amplitude Distribution Analysis, Asteroid Belts, Statistical Analysis
Scientific paper
The photometric observations obtained for 13 asteroids from beyond the Hecuba gap (3.3 AU from the sun) yield periods and amplitudes which have been used to compare main belt asteroid sample properties with those of a comparable outer-belt sample. While the distributions of rotational periods are not different at a statistically significant level, the outer-belt sample is noted to exclude the slow-rotator population rendering the main-belt distribution so strikingly non-Maxwellian. Elongated shapes are proposed to have been more frequent among outer belt planetesimals, due to smaller impact velocities and lower densities than for the main-belt asteroids.
Cellino Alberto
de Sanctis G.
di Martino Mario
Farinella Paolo
Zappala Vincent
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