A 5 second occultation was recorded by Dean Hooper, using an SCT Telescope and Watec 910HX camera.

A 2 second occultation was recorded by Jacqui Milner, using an SCT Telescope and Mintron 12v1C-EX camera.

1 miss was recorded for this event.

View the IOTA update.

Observers:
  1    D Hooper, Melbourne, Victoria, Australia
  2    J Milner, Bayswater, Victoria, Australia
  3(M) D Herald, Murrumbateman, New South Wales, Australia     
  4(P) Prediction                           

       

Discussion:

The circle above is plotted at the expected diameter of Rachele. The model has been plotted to fit the observed chords. The event would appear to have been just to the south of the predicted path.

The figures below show the Tangra light curve of the occultation.

Hooper:

Milner:

Observational Data:

Observation details for MP ( 674 ) Rachele
By Star              UCAC4 271-193950
On 2017-07-31  at 15:00:29.0

_______________________________

Observer   Dean Hooper
Location   Melbourne, VIC, Australia
Longitude  +145:05
Latitude   -37:59
Altitude   10 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   28 cm
Seeing     Slight flickering Clear 
Camera Type  Watec 910HX    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  15:00:36.38
Reappearance   15:00:41.02
Comments: Light curve generation Tangra v3.6.7.  Time analysis AOTA v4.3.2.0.
Target very close to zenith, tricky alt/az azimuth tracking and a battle with dew! Low magnitude
drop event barely discernible real-time on the monitor.

_______________________________

Observer   Jacquie Milner
Location   Bayswater, Vic, AU
Longitude  +145:14
Latitude   -37:50
Altitude   110 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear 
Camera Type  Mintron 12v1C-EX             PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  15:00:37.47
Reappearance   15:00:39.79
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW, Australia
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Fog 
Camera Type  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:  Lightcurve from 14:58:51 to 15:01:10 by Tangra v3.6.7 using
AperturePhotometry/AverageBackground. Analysis by AOTA v4.3.3.0.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8