The observations of Near Earth Objects (NEOs) that we need you to analyse can be downloaded from the table below.

You should download all the observations in the Group for "blinking" (usually 3 or 4 observations) and remember to make a note of the "Group ID code" - you will need it when reporting your results.

Once you have found the NEO in all of the observations by "blinking" them, the next step is to measure the position of the NEO. We need to know the pixel coordinate of it in each image. To find this, you can use the Image Examine tool in LTImage.

Image Examine Tool

At first glance, asteroids would seem to be very difficult to spot. Even the closest ones are so far away that they look like "dots" even with a big telescope - just like stars!

However, unlike stars, asteroids are orbiting around the Sun. So, if you take several observations of a bit of the sky, the stars will not move, but any asteroids will.