A Two widely separated occultations wer recorded by Dave Herald and John Drommond, using video OSD technique.

View the updated prediction.

Observers:
  1    D Herald,Murrumbateman, NSW
  2    J Drummond,Patutahi, Gisborne, NZ
  3(P) Prediction, 28 Feb


        

Discussion:

The ellipse above is plotted at the best fit axis ratio as determined by Occult. With Two chords we can be confident of the path of Elfriede and that it was very close to the predicted line.

The figure below shows Dave's Tangra light curve of the occultation.

Observational Data:

Observation details for MP ( 618 ) Elfriede
By Star              TYC 5718-00979-1
On 2013-04-13  at 15:58:15.0

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Thin cloud < 2
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.19
Timing     GPS - time inserted Video with frame analysis
Disappearance  15:58:13.83
Reappearance   15:58:25.51
Comments: Considerable thin cloud/smoke => 8-frame integration
Report prepopulated by IOTA Reporting Add-in for OW ver.1.7

_______________________________

Observer   John Drummond
Location   Patutahi, Gisborne, New Zealand
Longitude  +177:53
Latitude   -38:37
Altitude   15 m
Datum      Other
Telescope Newtonian
Aperture   41 cm
Seeing     Slight flickering Clear
Camera Type
Camera Delay 0
Timing     Tape Recorder + time signal Visual, PE applied
Disappearance  16:01:23.00
Reappearance   16:01:33.40
Comments: Star disappeared from sight for ~10.4 seconds
(16:01:23.0 - 16:01:33.4 UT). No Moon, dark, rural sky, no wind.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.7