The Minor Planet Observer
and
Palmer Divide Observatory

2007 Shoemaker Grant Recipient

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Asteroid positions were computed for every 0.25d in a given year and then compared against the position in the PPM (Positions and Proper Motions) Catalog. If an initial approach within 0.5° was found, the asteroid's position was recalculated using numerical integration once an hour for 12h on either side of the initial "hit". Interpolation was used to find the exact date and time of minimum distance.

Clicking on a month opens a new window.

Asteroid – PPM Appulses (2009)
January	May	September
February	June	October
March	July	November
April	August	December

Asteroid – PPM Appulses (2010)
January	May	September
February	June	October
March	July	November
April	August	December

Calculations by Brian D. Warner.

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This page was last updated on 10/19/09 01:34 -0600.
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The Minor Planet Observer and Palmer Divide Observatory

Asteroid – PPM Appulses (2009)

Asteroid – PPM Appulses (2010)

The Minor Planet Observer
and
Palmer Divide Observatory