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OCCULTATION OF UCAC2 17370269 BY 141 Lumen
2016 March 28

Brian Loader has observed a very brief 0.3 second occultation from Darfield, South Island, New Zealand. No other reports were received for this event.

View the IOTA update.

  1    B Loader,Darfield                    
  2(P) Prediction                           


Lumen occultation__ 2016 March 28


The circle above is plotted at the expected 145 km diameter of (141) Lumen. Clearly, given the very short duration, the occultation is a near graze near the limb of the asteroid. With only one chord it is not possible to determine whether Brian was north or south of the central line of the event.

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

Lumen  occultation__ 2016 March 28

Observational Data:

Observation details for MP ( 141 ) Lumen
By Star              UCAC2 17370269
On 2016-03-28  at 16:13:15.0


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     Steady Clear 
Camera Type  WAT910BD       AAV-PAL       
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  16:13:17.25
Reappearance   16:13:17.57
Comments: looks to be a very brief graze Lightcurve from 16:11:32 to 16:14:37 by Tangra v3.5.6 using AperturePhotometry/AverageBackground. Analysis by AOTA v4.2.0.1. Report prepopulated by IOTA Reporting Add-in for OW ver.1.8


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