Lightcurve results for Asteroid 3447 Burckhalter.
No reasonable period was derived.
Asteroid 3447 Burckhalter is a main belt asteroid that was discovered on September 29, 1956 by Goethe Link Observatory at Brooklyn. The semi-major axis is 1.96 AU and the eccentricity is 0.288 and the inclination is 20.71 degrees.
I observed this asteroid on 2 nights during June 2009 when it was in the field of another asteroid I was observing. The lightcurve was very incomplete and no reasonable period could be derived.