If the object isn't in horizon, but you have ephemeris data, you can create a simple text file to impor into htool.

This example illustrates a simple file: simple.txt
Just copy it and replace the values the your ephemeris data.

1. Target body name - required, name of you object
2. Center body name - required, leave as "Earth (399)"

3. Keep the header fields. The RA column should line use with the "R.A._________(ICRF)__" header.
   Htool uses the header to determine which column RA values start.

4. Other that the 'RA' field, the other data is delimited by spaces so exactly 
   column placement isn't important.

5. Htool uese the Date(UT), RA, DEC and APmag data. Other field are not used (showns as 0.0 in the example).
   The RA,DEC can have less decimal, but more the better as rate are calculated using the RA,DEC field.

6. The $$SOE, and $$EOE identify the start and end for the data.