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ASTEROIDAL OCCULTATION - REPORT FORM

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EAON & IOTA-ES

EUROPEAN ASTEROIDAL OCCULTATION NETWORK

INTERNATIONAL OCCULTATION TIMING ASSOCIATION EUROPEAN SECTION

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1. DATE: 20 Nov 2022
   STAR: UCAC4 621-022104
   ASTEROID (TNO): (470443) 2007XV50

2. OBSERVER
   Name: Stefano SPOSETTI
   Address: 6525 GNOSCA - Switzerland
   Email: stefanosposetti@ticino.com

3. OBSERVING STATION
   Nearest city: CH-6525 Gnosca
   Longitude: 9d 1m 26.5s (E)
   Latitude: 46d 13m 53.2s (N)
   Altitude: 260 m
   (WGS84)

4. TIMING OF EVENTS
   Occultation recorded: NEGATIVE
   Type of event:
   "S"tart observation;
   "E"nd observation;

   Personal Equation Substracted: -
   Event Time (UTC) Accuracy + Comments
   code: HH:MM:SS.ss S.sss

-S1 : 21:38:07.6
-E1 : 21:38:39.6

-S2 : 21:40:41.6
-E2 : 21:42:49.6

-S3 : 21:43:11.6
-E3 : 21:44:33.6

-S4 : 21:46:12.6
-E4 : 21:49:55.6

-S5 : 21:50:11.6
-E5 : 21:52:45.6

-S6 : 21:53:01.6
-E6 : 21:54:55.6

-S7 : 21:55:03.6
-E7 : 21:59:59.7

-S8 : 22:00:25.7
-E8 : 22:09:23.7

5. TELESCOPE
   -Type: Newton
   -Aperture: 420 mm
   -Focal length: 1640 mm
   -Mount: Equatorial
   -Motor drive: Yes

6. TIMING & RECORDING
   -Camera/Sensor: Videocamera  QHY174M-GPS, SONY IMX174 CMOS sensor
   -Device of recording: Personal computer, USB3 input, SharpCap v. 4.0 software, saved on SSD Harddisk as ADV file
   -binning 2x2, cooled at sensor temperature -20 deg C, camera bit depth = MONO16
   -Timekeeping: GPS UTC clock
   -Integration time: 2.000 s

7. OBSERVING CONDITIONS
   -Atmospheric transparency: fair (clouds passing over target)
   -Wind: -
   -Star image stability: fair/good
   -Minor Planet Visible: -

8. ADDITIONAL COMMENTS
   -transiting clouds over the target therefore some interruptions in reporting S and E times
   -Occultwatcher Cloud, Lucky Star/GaiaEDR3 prediction, Rank: 7, Probability: 3.9 %
   -https://cloud.occultwatcher.net/event/688-470443-75178-650149-U022104