A 11.4 second occultation was recorded by Ashley Pennell, using a video recording setup.
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Observers: 1 Ash Pennell, Dunedin NZ 2(P) Prediction
The circle above is plotted at the expected 108 km diameter of Mnemosyne. With only one chord it is not possible to determine whether Ashley was north or south of the central line of the event. It is curious that the observed occultation is longer than the maximum expected suggesting that (57) Mnemosyne has an irregular outline.
The figure below shows the Tangra light curve of the occultation.
Observation details for MP ( 57 ) Mnemosyne By Star UCAC2 32277249 On 2015-06-27 at 15:58:17.0 _______________________________ Observer ashpennell Location dunedin NZ Longitude +170:29 Latitude -45:52 Altitude 136 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 35 cm Seeing Steady Clear Camera Type Watec 120N+ NTSC/EIA Camera Delay Timing GPS - time inserted Video with frame analysis Disappearance 15:58:14.43 Reappearance 15:58:25.83 Comments: