A 4.9 second occultation was recorded by Brian Loader at Darfield on the South Island of New Zealand while misses was recorded by Bill Allen and Graeme McKay further north at Blenheim.
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Observers: 1(M) B Allen,Blenheim, NZ 2 B Loader,Darfield 3(M) G McKay,Blenheim, New Zealand 4(P) Prediction
Brian's observed chord is placed centrally of the DAMIT shape model for (639) Latona. Graeme and Bill's observations are not sufficiently close to Brian's to constrain the placement of Brian's observation.
The figure below shows the Tangra light curve of the occultation.
Observation details for MP ( 639 ) Latona By Star UCAC4 325072503 On 2016-04-19 at 09:43:31.0 _______________________________ Observer Bill Allen Location Blenheim, NZ Longitude +173:50 Latitude -41:29 Altitude 38 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 40 cm Seeing Steady Clear other - list in comments Camera Type WAT120N+ PAL/CCIR Camera Delay Timing GPS - time inserted Video with frame analysis Missed Comments: Datum NZ1949 (topographical map) _______________________________ Observer B. Loader Location Darfield Longitude +172:06 Latitude -43:28 Altitude 210 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 25 cm Seeing Slight flickering Clear Varable thin fog Camera Type WAT910BD AAV-PAL Camera Delay Timing GPS - time inserted Video with frame analysis Disappearance 09:43:38.99 Reappearance 09:43:43.87 Comments: Lightcurve from 09:42:01 to 09:45:00 by Tangra v3.5.6 using AperturePhotometry/AverageBackground. Analysis by AOTA v220.127.116.11. Report prepopulated by IOTA Reporting Add-in for OW ver.1.8 _______________________________ Observer Graeme McKay Location Blenheim, New Zealand Longitude +173:57 Latitude -41:32 Altitude 18 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 28 cm Seeing Clear Camera Type Watec 120N+ PAL/CCIR Camera Delay Timing GPS - time inserted Video with frame analysis Missed Comments: Clear sky Report prepopulated by IOTA Reporting Add-in for OW ver.1.8