Doublestar analysis of lunar occultation of XZ66511 on Mar.30 2009

Observed by Mitsuru Kashiwagura

and Kunio Kenmotsu

Analized by Kazuhisa Miyashita

Introduction

Mitsuru Kashiwagura (Yamagata) and Kunio Kenmotsu (Okayama) videotaped same event of XZ66511 and they reported the result of observation to JCLO. Below is an analysis based on their lunar occultation report.

Catalogue details (WDS)

    WDS   Discovr Comp  EPOCH      #  THETA       RHO     Magnitudes Spectral  Prop Mot  2nd PM   DM Desig Note     Precise
Identifier             Frst Last      Fst Lst First  Last  Pri   Sec  Type      RA" DEC" RA" DEC"                 Coordinate
03365+2355STF 420      1831 2008   12 111 113   6.5   6.8  8.72 11.0  G0        +011-016          +23  482   D  033629.66+235445.5
Table.1    Information of star details from Washington Doublestar Catalog

Observation
Place name     Oe, Yamagata, Japan
Representative Mitsuru Kashiwagura
TA  CED   30   200  +14008     +3822       
OA  M. Kashiwagura

20090330102941.41 X 66511 DD     EG G0.03 1   W        2   AA
20090330102952.72 X 66511 DD     EG G0.03 1   E        2   AA

Place name     Soja, Okayama, Japan
Representative Kunio Kenmotsu
TB  CED   20   180  +13344      +3441      84
OA  K. Kenmotsu  
20090330103014.36 X 66511 DD     EG G0.04 1   W     T112  8BA
20090330103027.75 X 66511 DD     EG G0.04 1   E      112  8BA

Analysis


   Calclation of astrometry

Result

Observation Catalogue
Separation (arcsec)
6.85
6.8
Position angle (deg)
106
113

Discussion

The separation between both components (obtained this observation) is close to catalogue data. However the position angle is 5 degrees smaller than catalogue. It is thought that the difference was caused because the lunar has uneven surface.