A 7.02 second occultation was recorded by Brian Loader, using video OSD technique.

View the updated prediction.

Observers:
  1    B Loader,Darfield,NZ
  2(P) Prediction, 21 June


    

Discussion:

The circle above is plotted at the expected 116 km diameter of Artemis. With only one chord it is not possible to determine whether Brian was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the longer than expected chord of about 120km would suggest that the chord might lie close to the central portion of the asteroid.

The figure below shows the Limovie/Tangra light curve of the occultation.

Observational Data:

Observation details for MP ( 105 ) Artemis
By Star              HIP 14601
On 2011-08-08  at 15:01:19.0

_______________________________

Observer   B. Loader
Location   Darfield,NZ
Longitude  +172:06
Latitude   -43:28
Altitude   210 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Strong flickering Clear
Camera Type  PC164C         NTSC/EIA
Camera Delay 0
Timing     GPS - time inserted Video with frame analysis
Disappearance  15:01:10.35
Reappearance   15:01:17.37
Comments: Altitude 17 deg,  seeing as poor as might be expected.
There was no guide/comparison star visible in the video field.
Events were sharp, times determined by both frame and field analysis.
Agreement good.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.6