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Asteroid 8373 Stephengould


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About this observation
Eric Watkins
Time of observation
30/08/2018 - 00:45
8373 Stephengould
C14 Edge 0.356m @F7.7
ME Paramount GEM
QSI 532 ccd camera binned 3x3
Astrometrica & Canopus
60 seconds no filter

Determining the rotation period of an asteroid  together with analysing the light curve is still an area where the amateur can make a contribution to the body of knowledge.  This is one area I wished to work within so to gain the practical experience I concentrated my first efforts on an asteroid with relatively known parameters. I chose the asteroid 8373 Stephengould, an outer main belt asteroid with a diameter of 6.69km and  a reported period of 4.435 hrs.

The asteroid was faint at Mag R of 17.0 and four nights of 495 individual measurements provided a well defined curve and a rotation period of  4.435hrs.  These results where checked and confirmed by Brian Warner who also looked for signs of the associated satellite, period 34.15 hrs which proved negative.

I am grateful to Brian Warner for his help and encouragement.

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