Lightcurve results for Asteroid 1187 Alfa.
Derived period 14.66 ± 0.01 hours. Amplitude 0.4 ± 0.05 magnitude.
Asteroid 1187 Alfa is a main belt asteroid that was discovered by K. Reinmuth on 6 December, 1929 in Heidelberg. The semi-major axis is 2.35 AU and the eccentricity is 0.221 and the inclination is 10.72 degrees.
I observed this asteroid on 2 nights during June 2006. A period of 14.66 hours was derived, although more data is required to confirm this result.