I have a question about the wording in a paper about a planetary system and comets
What they have done is take each of the 580 Jupiter-Family Comets (JFCs) from our solar system (from the JPL Small Body DataBase; set object kind=comets,
Comet Orbit Classes to Jupiter-family Comet) and kept all of the orbital elements the same, except for the semi-major axis which they have scaled by the ratio of the semi-major axis 55 Cnc d (5.74 au) to Jupiter's (5.2 au). So a comet with a semi-major axis of 3 au in our solar system would be $3\times(5.74/5.2)=3.312\,au$ in the 55 Cnc system - this is what they are referring to as comet analogs
All of these 580 comet analogs are being inserted into the 55 Cnc system, For each comet analog inserted, they are creating 100 clones of each analog, varying the mean anomaly. This creates almost 60,000 &quot;comets&quot; which are then integrated along with the 55 Cnc system planets and the outcomes of the comet clones are tracked to see how many survive, how many are ejected from the 55 Cnc and over what timeframe. To illustrate this, they have picked the 3 comet analogs of 2P/Encke, 9P/Tempel 1 and 31P/Schwassmann-Wachmann 2 as examples of JFCs which have high, medium and low eccentricity respectively (their Table 2) and find that comets which have eccentricity tend to preferentially ejected and in a shorter time due to a greater number of encounters with the planets of the 55 Cnc. This occurs much quicker in the 55 Cnc system than their corresponding counterparts in our Solar System.