#IOTA-ES ASTEROIDAL OCCULTATION - REPORT FORM 2.03 - DVTI+CAM TEMPLATE 1.6 #Event #Occultation: NEGATIVE #DATE: 08 Nov 2023, 17:07:22 #PREDICTTIME: 08 Nov 2023, 17:07:22 #STAR: UCAC4 340-126630 #ASTEROID: 2001 RH4 #Nr: 55193 #OBSERVER #Observer1: Stefan Meister #Observer2: #moreObs: #E-mail: meister@dolphins.ch #Address: Sandgruebstr. 9, CH-8193 Eglisau, Switzerland #OBSERVING_STATION #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: 17:06:57.231 #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: M #Acc_D: #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: M #Acc_R: #EndObs: 17:07:47.468 #Duration: #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: DVTI+CAM, serial #76 #Signal/Noise: #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: 3 #Stability _=unstated 1=Steady 2=Slight flickering 3=Strong flickering #Stability: 2 #Comments: # #EXTRA_FIELDS #Feed: Community Tags #MpcObsCode: - #Prediction: yes #ProbabilityPercent: 35.6 #PredictedDurationSec: 0.2 #DistanceCentralLineKm: 1.8 #PathWidthKm: #StarMag: 11.9 #StarAltDeg: 12 #StarAzDeg: 217 #StarConstellation: Sagittarius #AsteroidMag: 21.5 #AsteroidDiameterKm: 6.0 #CombinedMag: 11.9 #DeltaMag: 9.6 #Moon: below horizon #TelescopeType: Newtonian #MountModel: equatorial #MountMotorDrive: yes #StartObsAccSec: 0.001 #EndObsAccSec: 0.001 #FieldOfView: #CameraGainDb: ? #CameraBinning: 2x2 #CameraWidthHeight: 640x512 #CameraRecordingFormat: ADV 16-bit #ImageSensor: Gpixel GLUX9701 (16mm 1280x1024 9.76um sCIS) #TimeSource: Max M8C GNSS module in the camera #TimeInserter: - #FrameGrabber: - #RecordingSoftware: DVTI Cam Control v5.7.0-37 #LightcurveExtractionSoftware: #LightcurveAnalysisSoftware: #ErrorInTime: +/- 0.994 s #StarMagnitudeInV: #StarMagnitudeInR: #MaxDuration: 0.2 s #MagnitudeDrop: 9.6 #MagnitudeDropInR: #EventRank: #Probability: 35.6 ASTEROIDAL OCCULTATION - REPORT FORM +------------------------------+ +-------------------------------+ | EAON | | IOTA/ES | | | | INTERNATIONAL OCCULTATION | | EUROPEAN ASTEROIDAL | | TIMING ASSOCIATION | | OCCULTATION NETWORK | | EUROPEAN SECTION | +------------------------------+ +-------------------------------+ 1 DATE: 2023 Nov 08, 17:07 (UTC) STAR: UCAC4 340-126630 mv: 11.9 mag ASTEROID: (55193) 2001 RH4 mv: 21.5 mag (diam. 6.0 km) combined magnitude: mv: 11.9 mag delta-magnitude: mv: 9.6 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: yes (Distance 1.8 km from C.L.) Probability: 35.6 percent +----------------------------------+ 4 TIMING OF EVENT: | | | OCCULTATION RECORDED: NEGATIVE | | | +----------------------------------+ 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 17 06 57.231 +/- 0.001 s : Start observation (UTC) E 17 07 47.468 +/- 0.001 s : End observation (UTC) P 17 07 22.304 +/- 0.994 s : Predicted time (UTC) (predicted: max. 0.2 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: 2500 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 1 m Camera/Sensor: Digital Camera with integrated GPS-VTI (DVTI+CAM, serial #76) Image Sensor Gpixel GLUX9701 (16mm 1280x1024 9.76um sCIS) Website of the project: https://groups.io/g/d-vti-cam/ Settings: 640x512, Exposure time 100 ms, Gain ?, Binning 2x2, Format ADV 16-bit Time insertion: Digital GNSS timestamp into image sensor data stream 7 OBSERVING CONDITIONS: Moon: below horizon Wind: Bft Temperature: deg C Transparency: 3 Star image stability: 2 Altitude of star: 12 deg Azimut of star: 217 deg in Sagittarius StarConstellation: Sagittarius 8 ADDITIONAL COMMENTS: Feed: Community Tags Video recording software: DVTI Cam Control v5.7.0-37 Signal/Noise: Further Comments: This is a single point event (positive for one frame) but cannot be reported as such. However the timing of the drop is in good alignment with the prediction (duration and event time). See attached light curve. The drop happened at 17:07:23.951 and the predicted time was 17:07:22.304 +/- 0.994 s.