Three clearly observed misses were recorded for this event.

View the updated prediction.

Observers:
  1(M) D Herald,Murrumbateman, NSW,AU
  2(M) D Gault,Hawkesbury Heights,NSW,AU
  3(M) W Hanna,Alice Springs, Australia
  4(P) Prediction,, TT14 Feb 28

        

Discussion:

The circle above is plotted at the expected 113 km diameter of Ulla. With no positive chords we cannot say where the actual path was, so the circle has been plotted on the predicted path.

Observational Data:

Observation details for MP ( 909 ) Ulla
By Star              UCAC4 520-053122
On 2013-03-17  at 11:30:59.0

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW,AU
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.19
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.7

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights,NSW,AU
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Slight flickering Clear
Camera Type  ADVS           ADVS
Camera Delay 0
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 1.09166666666667
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: StellaCam 3 (Peltier-cooled WAT 120N+) used.  Light wind with
occasional gusts.  Air temp 28 C.