A 2.1 second occultation was recorded by Bil Hanna, using video OSD technique.

One clearly observed miss was recorded for this event.

View the updated prediction.

Observers:
  1(M) J Broughton,Reedy Creek, QLD, AU
  2    W Hanna,Alice Springs, Australia
  3(P) Prediction, 31 March


        

Discussion:

The circle above is plotted at the expected 83 km diameter of Happellia. With only one chord it is not possible to determine whether Bill was north or south of the central line of the event.

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

Observational Data:

Observation details for MP ( 578 ) Happelia
By Star              UCAC2 27672229
On 2013-05-06  at 13:14:28.0

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.11
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:

_______________________________

Observer   William Hanna
Location   Alice Springs, Australia
Longitude  +133:53
Latitude   -23:42
Altitude   581 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Camera Type  WAT120N+       NTSC/EIA
Camera Delay 0.2917
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:17:33.97
Reappearance   13:17:36.14
Comments: StellaCam 3 (Peltier-cooled WAT120N+) used.