Lightcurve of Asteroid (1363) Herberta During its 2024 Apparition

In order to derive a rotation period for the asteroid (1363) Herberta, we obtained imaging observations over six nights, and time span three months, near its 2024 opposition. A total of 174 images from the Union College Observatory and iTelescope T72 in Chile were used to create a lightcurve in the R (red) filter. These results allow us to refine the previously reported period of rotation and obtain a new amplitude of the brightness variation from a different viewing angle. Our findings will contribute to a model of both the shape and spin vector of Herberta when combined with data from multiple apparitions. The spin vector should evolve via the YORP effect: a phenomenon where long term exposure to sunlight changes the orientation and rotation rate of asteroids.