THE LIGHT CURVES OF THE ASTEROIDS (198) AMPELLA, (481) EMITA AND (772) TANETE

The light curve of the main belt asteroid (198) Ampella was measured a t phase angles 1, 6 and 13 degrees during 10 nights. The periodicity o f the light curve is 10.378 +/- 0.003 hours. Ampella's photometric amp litude at opposition is 0.13 magnitudes and increases with phase angle by 0.006 magnitude/degree. Its two dimensional symmetric profile has been determined from its light curve and is nearly circular with a bre adth ratio of 1.13. Less than one quarter of the curve of the asteroid (481) Emita was measured on one night which gave a lower limit of 20 hours for the period and 0.15 magnitude for the amplitude. A half peri od or less was measured of the light curve of (772) Tanete which gives a lower limit for the period of 12 hours and a minimum amplitude of 0 .13 magnitude.