Lightcurves and Rotational Periods of Nine Main Belt Asteroids

Asteroid Lightcurve Observations from 1981 to 1983

“…The resulting phase data are very well fit by the H-G relation, yielding a well-determined and very ordinary value for G, in spite of the very small range of phase covered. Una was observed by Di Martino et al (1994) at almost exactly the same place in the sky in October 1991. Their lightcurve is similar to ours with a very slightly larger amplitude and a somewhat more regular shape.…”

MIDI observations of 1459 Magnya: First attempt of interferometric observations of asteroids with the VLTI

“…Fracastoro station of the Catania Astrophysical Observatory, in order to determine the rotational phase of the asteroid at the time of VLTI observations and to derive a reliable absolute magnitude H . Observations were carried out on October 17 and 19 at the 91-cm Cassegrain telescope, equipped with a cooled photon-counting single-head photometer and an EMI9893QA/350 photomultiplier and using a 1.5-mm diameter diaphragm, limiting the telescope field to an aperture of about 22 (see Di Martino et al, 1994, for the adopted data reduction and analysis technique). We have reduced asteroid magnitudes to the Johnson standard system by observing standard stars taken from Blanco et al (1968) and Landolt (1992).…”

Photometry and models of selected main belt asteroids

“…They noticed a maximum occurring the same time each night. From the lenght of the observing run they could rule out periods around 8 h, so their conclusion was 12 or 16 h. In September 1990 Campania was observed by Di Martino et al (1994a) during four nights. (The paper by Schober at al.…”