Argus X
Argus X was the uninhabited tenth planet in the Argus system. This system, located in the Alpha Quadrant, was over a thousand light years away from the Tycho system.

In 2268, the  conducted a planetary survey of Argus X, discovering a large vein of tritanium ore. Captain James T. Kirk sent a recommendation to Starfleet for a survey vessel to be dispatched to this planet as a result of the rich find. 

Also discovered on the planet by the Enterprise landing party was the dangerous dikironium cloud creature, which attacked and killed (or nearly killed) five security guards. ()

See also 
 Argus sector

Appendices

Background information 
This planet's quadrant of origin is inferred based on the position of its star system as seen in the star chart appearing in the  episode .

For the original production of the episode, the planet model for Argus X was first used for Delta Vega (). It was used again for Alfa 177 (, Tantalus V (), Planet Q (), Benecia (), Gothos (), Lazarus' planet (), Beta III (), Janus VI (), Organia (), and Mudd (). It was later used for Ardana (). 

For the remastered episode, a new planet model was created by CGI artist Max Gabl.

External links 
 
 

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Argus 10