Amleth Prime
Amleth Prime was the inhabited prime planet in the Amleth system. The system was located in an emission nebula. The planet  and the Loval system were located in the same sector as this planet.

This nebula rendered cloaking devices ineffective, making the station on this Cardassian planet more difficult to attack in 2372. ()

Appendices

Background information 

This planet's quadrant of origin is inferred based on the position of the Cardassian Union as seen in the star chart appearing in the  episode .

"AM-leth" was the pronunciation for this planet's name from the script pronunciation guide. 

According to StarTrek.com, Amleth Prime was the sole M-class planet in its system.

External link 
 

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Planets