A 4.96 second occultation was recorded by Brian Loader, using video OSD technique.

View the TT 14 prediction.

Observers:
  1    B Loader,Darfield,NZ
  2(P) Prediction, TT14 31-Dec

        

Discussion:

The circle above is plotted at the expected 85 km diameter of Riga. With only one chord it is not possible to determine whether Brian was north or south of the central line of the event. Brian was close to the 2 sigma line so this implies a significant shift to the north.

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

Observational Data:

Observation details for MP ( 1796 ) Riga
By Star              UCAC4 423-006094
On 2013-01-10  at 13:13:05.0

_______________________________

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  WAT120N        PAL/CCIR
Camera Delay 0.67
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:13:11.52
Reappearance   13:13:16.48
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.7