Asteroid Light Curves
From the NEAR archive page.
http://near.jhuapl.edu/iod/archive.html

Brian Warner of the Palmer Divide Observatory and the Minor Planet Observer has been kind enough to share two sets of images of asteroid 771 Libera. These images were taken on September 18 and 22, 1999. Each set contains 67 images taken approximately every 6 minutes during the evening. 

Using the method of differential photometry you can determine the how the brightness of the asteroid varies during the evening. You do not need to know the actual magnitude of the asteroid to create a light curve. We have placed the images at the FTP site listed below. This activity would be great for an entire class if you wish to analyze all 67 images from either evening. If you have 30 students in your class, each student could analyze 2 or more images. Perhaps the students could work in teams of two and analyze 10 images. That way there would be two measurements of each image allowing for cross checking before the data are plotted.

The FTP site is : ftp://65.209.7.102/pub/snsearch/LTCURVES//

You will be able to download the files in batch mode if you use an FTP client to retrieve them.
Log in as : anonymous with the password : guest.
The files for asteroid 771 Libera are in the folder called LTCURVES
Each image file is about 3/4 MB.

Design you own method to approach this task or use the activity we have prepared for you here.