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Taurus Hill Observatory » Asteroids » Lightcurve measurements of the asteroid 54 Alexandra made in THO

Lightcurve measurements of the asteroid 54 Alexandra made in THO

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by: Harri Haukka
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Word Count: 158
Date: Mon, 22 Jan 2007 Time: 12:00 AM
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The revolution time of the asteroid 54 Alexandra is about 7,3 hours. Veli-Pekka Hentunen and Markku Nissinen  measured five hours from this 7,3 hours revolution time 21.-22.1.2007 in Taurus Hill Observatory. The weather was clear and the temperature was about -15 celcius degrees. The R -filter and 120 sec. exposures were used for this measurement. The comparison stars were GSC1793-1602 (C1) and GSC1793-0462 (C2).

(Tämä uutinen suomeksi)

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Harri Haukka


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