You must define your target using one of the following target types. These are selected from tabs in the target entry dialogue.
A fixed-single target is one object or map centre outside of the solar system. This default entry dialogue is shown in Figure 9.1, “Target entry dialogue”.
A moving target is a solar system object that has a different tracking to the normal sidereal rate. Entry of moving targets is discussed in more detail in Figure 9.2, “Moving target entry dialogue”. The entry dialogue is shown in Figure 9.2, “Moving target entry dialogue”.
Figure 9.2. The moving target entry dialogue is shown with the name Dione entered. It will list the NAIF IDs of objects with this name for you to choose from, in this case, Dione the satellite versus Dione the asteroid (see Figure 9.3, “NAIF IDs for Dione”).
For a comet, entering "2P" is correctly resolved as "Encke" and gives NAIF ID "1000025". Entering "Encke" is also resolved as the correct NAIF ID. Rather perversely though, if you give the full, official IAU designation "2P/Encke" the name gives a name resolution error.