#IOTA-ES ASTEROIDAL OCCULTATION - REPORT FORM 2.03 - DVTI+CAM TEMPLATE 1.61
#Event
#Occultation: POSITIVE
#DATE: 03 Feb 2026, 21:07:14
#PREDICTTIME: 03 Feb 2026, 21:07:14
#STAR: UCAC4 539-039491    
#ASTEROID: 1987 CH     
#Nr: 19125
#OBSERVER
#Observer1: Stefan Meister
#Observer2: Andreas Schweizer
#moreObs:
#E-mail: meister@dolphins.ch
#Address: Sandgruebstr. 9, CH-8193 Eglisau, Switzerland
#OBSERVING_STATION
#Observatory: Observatory Buelach (MPC Obs. Code: 167)
#NearestCity: Buelach
#Countrycode: CH
#Coordinates LAT +/-DD MM SS.S  LON +/-DDD MM SS.S 
#Latitude:  +47 31 10.402
#Longitude: +008 34 14.300
#Altitude: 550
#Datum _blank=WGS84 N=NAD1927 E=ED1950 T=Tokyo G=GB1936 *=unspecified, or other
#Datum:
#Teleskop _=unstated 1=Refractor 2=Newtonian 3=SCT 4=Dobsonian 5=Binoculars 6=Other 7=None 8=eVscope 
#Telescope: 2
#Aperture in cm
#Aperture: 50.0
#FocalLength in cm
#FocalLength: 250.0
#ObservingMethod   _=unspecified a=Analogue & digital video b=Digital SLR-camera video c=Photometer d=Sequential images e=Drift scan f=Visual g=Other 
#ObservingMethod: a 		    
#Observation
#StartObs: 21:06:52.75
#D D=Main Star d=second Star G=satellite main star g=satellite 2nd star N=ring  M=non detection +time hh:mm:ss.s
#D: D21:07:13.552
#Acc_D: 0.064
#R R=Main Star r=second Star B=satellite main star b=satellite 2nd star N=ring  M=non detection +time hh:mm:ss.s
#R: R21:07:13.987
#Acc_R: 0.064
#EndObs: 21:07:37.64
#Duration: 0.435
#Exp_Time: 0.100
#Timesource  _=unspecified a=GPS b=NTP c=Telephone (fixed or mobile) d=Radio time signal e=Internal clock of recorder f=Stopwatch g=Other
#Timesource: a	 
#Camera: 
#Signal/Noise: 5.3
#Weatherconditions
#Wind: 
#Temperature: 
#Transparency 1=Clear 2=Fog 3=Thin cloud <2 [mag loss <2 mag.] 4=Thick cloud >2 [mag loss >2 mag. 5=Broken opaque cloud [that is, observed thru gaps in the cloud] 6=Star faint 7=By averted vision
#Transparency: 1
#Stability _=unstated 1=Steady 2=Slight flickering 3=Strong flickering 
#Stability: 1
#Comments: Analysed with PyMovie 4.1.5 and PyOTE 5.7.11
#
#EXTRA_FIELDS
#Feed: Planned Observations
#MpcObsCode: -
#Prediction: no
#ProbabilityPercent: 18.5
#PredictedDurationSec: 0.5
#DistanceCentralLineKm: 2.3
#PathWidthKm: 
#StarMag: 15.2
#StarAltDeg: 59
#StarAzDeg: 158
#StarConstellation: Gemini
#AsteroidMag: 17.1
#AsteroidDiameterKm:  3.0
#CombinedMag: 15.0
#DeltaMag:  2.1
#Moon: 95 percent lit, distance 51 deg
#TelescopeType: Newtonian
#MountModel: equatorial
#MountMotorDrive: yes
#StartObsAccSec: X.XXX
#EndObsAccSec: X.XXX
#FieldOfView:
#CameraGainDb: {{CAMERA_GAIN}}
#CameraBinning: {{CAMERA_BINNING}}
#CameraWidthHeight: {{CAMERA_W_H}}
#CameraRecordingFormat: {{RECORDING_FORMAT}}
#ImageSensor: {{CAMERA_SENSOR_NAME}}
#TimeSource: Max M8C GNSS module in the camera
#TimeInserter: -
#FrameGrabber: -
#RecordingSoftware: DVTI Cam Control v5.9.0-82
#LightcurveExtractionSoftware: 
#LightcurveAnalysisSoftware:
#ErrorInTime:  +/- 0.351 s
#StarMagnitudeInV: 
#StarMagnitudeInR: 
#MaxDuration: 0.5 s
#MagnitudeDrop:  2.1
#MagnitudeDropInR: 
#EventRank: 
#Probability: 18.5




                   ASTEROIDAL OCCULTATION - REPORT FORM

    +------------------------------+  +-------------------------------+
    |            EAON              |  |            IOTA/ES            |
    |                              |  |   INTERNATIONAL OCCULTATION   |
    |     EUROPEAN  ASTEROIDAL     |  |      TIMING  ASSOCIATION      |
    |     OCCULTATION NETWORK      |  |       EUROPEAN SECTION        |
    +------------------------------+  +-------------------------------+

1 DATE:                  2026 Feb 03, 21:07 (UTC)

  STAR:                  UCAC4 539-039491      mv: 15.2 mag
  ASTEROID:              (19125) 1987 CH       mv: 17.1 mag  (diam.  3.0 km)
                         combined magnitude:   mv: 15.0 mag
                         delta-magnitude:      mv:  2.1 mag

2 OBSERVER:
  Name:                  Stefan Meister
  E-mail:                meister@dolphins.ch
  Address:               Sandgruebstr. 9, CH-8193 Eglisau, Switzerland

3 OBSERVING STATION:
  Nearest city:          Buelach, CH
  Station:               Observatory Buelach (MPC Obs. Code: 167)
  Latitude:              N47 31' 10.402" (WGS84)
  Longitude:             E008 34' 14.300" (WGS84)
  Altitude:              550 m (MSL)  (WGS84)
  Single station:        yes

  Predicted observation: no (Distance 2.3 km from C.L.)
                         Probability: 18.5 percent

                         +----------------------------------+
4 TIMING OF EVENT:       |                                  |
                         |  OCCULTATION RECORDED: POSITIVE  |
                         |                                  |
                         +----------------------------------+
  Type of event:
   S = Start observation I = Interrupt-start   D = Disappearance
   B = Blink             F = Flash             E = End observation
   I = Interrupt-end     R = Reappearance
   M = Mid-event         P = Predicted time

  Event  Time (UTC)      Acc.         Comments
  Code   HH MM SS.sss    S.sss

   S     XX XX XX.XXX    +/-  X.XXX s  : Start observation (UTC)
   E     XX XX XX.XXX    +/-  X.XXX s  : End observation   (UTC)
   P     21 07 14.289    +/-  0.351 s  : Predicted time    (UTC)
                                         (predicted: max. 0.5 s)
  
  In case of a positive event: see extracted times in the PyOTE report "LC.pyote_log.txt".
 

5 TELESCOPE: 
  Type:                  Newtonian
  Aperture:              500 mm
  Focal length:          800 mm
  Magnification:         focal (resulting field of view: 11.9' in x-axis for IMX430)
  Mount:                 equatorial
  Motor drive:           yes

6 TIMING & RECORDING:
  Time source:           GPS
  Quality of signal:     Accuracy n/a m
  Camera/Sensor:         Digital Camera with integrated GPS-VTI ({{CAMERA_MODEL_NAME}}, serial #{{CAMERA_SERIAL_NR}})
                         Image Sensor {{CAMERA_SENSOR_NAME}}
                         Website of the project: https://groups.io/g/d-vti-cam/
  Settings:              {{CAMERA_W_H}}, Exposure time {{CAMERA_EXPOSURE_TIME}}, Gain {{CAMERA_GAIN}}, Binning {{CAMERA_BINNING}}, Format {{RECORDING_FORMAT}}
  Time insertion:        Digital GNSS timestamp into image sensor data stream

7 OBSERVING CONDITIONS:
  Moon:                  95 percent lit, distance 51 deg
  Wind:                   Bft
  Temperature:            deg C
  Transparency:          1
  Star image stability:  1
  Altitude of star:      59 deg
  Azimut of star:        158 deg in Gemini
  StarConstellation:     Gemini

8 ADDITIONAL COMMENTS:
  Feed:                      Planned Observations
  Video recording software:  DVTI Cam Control v5.9.0-82
  Signal/Noise:              5.3
  Further Comments:          Analysed with PyMovie 4.1.5 and PyOTE 5.7.11

