Lightcurve results for 18641 1998 EG10.
Period 5.68 +/- 0.01 hours. Amplitude 0.75 +/- 0.05 magnitude.
18641 1998 EG10 is a main belt asteroid with an estimated diameter of 5 km. It was discovered on on March 6, 1998 T. Kagawa at Gekko. The semi-major axis is 2.23 AU, the eccentricity is 0.103 and the inclination is 7.16 degrees.
This asteroid was observed on 2 nights during October 2007 when it was in the field of view of another asteroid I was studying. Analysis of the data indicated an asymmetric lightcurve with a period of 5.68 hours. However the data was noisy and so this period is uncertain.