1 DATE : 29/JAN/2004 STAR : HIP27972 ASTEROID : (308) POLYXO 2.OBSERVER: Name: Stefano SPOSETTI Address: CH-6525 Gnosca, Switzerland E-mail: stefanosposetti@freesurf.ch 3.OBSERVING STATION: Nearest city: CH-6500 Bellinzona Station: Gnosca Observatory Latitude: 46deg 13min 54sec (N) Longitude: 9deg 1min 30sec (E) Altitude: 260 m Single/Multiple: single 4.TIMING OF EVENTS: Occultation recorded: NO 5.TELESCOPE: Type: Newtonian Aperture: 40cm Magnification: - Mount: equatorial Motor drive: no 6.TIMING & RECORDING: Timekeeping: portable clock, DCF77 radiocontrolled Mode of recording: CCD scan Device of recording: CCD 7.OBSERVING CONDITIONS: Atmospheric transparency: good Wind: fair Star image stability: goord/fair Temperature: 0 deg C 8.ADDITIONAL COMMENTS: Due to CCD "drift scan" mode I observed no occultation in eight 70-seconds intervals. U.T. intervals : from 23:02:40 to 23:03:50 from 23:04:00 to 23:05:10 from 23:05:20 to 23:06:30 from 23:06:40 to 23:07:50 from 23:08:00 to 23:09:10 from 23:09:20 to 23:10:30 from 23:10:41 to 23:11:51 from 23:12:01 to 23:13:11 Precision of time measurement: +-1sec.