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Gammma Hromi was a planetary system found inside the Hromi Cluster in the Beta Quadrant. It was located near Starbase 24, Ramatis, and the Federation border with the Klingon Empire.

It was a quaternary star system with a yellow primary and three companion stars. These were two orange stars and one red star.

In this system, there were at least two planets, including Gamma Hromi II.

History[]

In 2257, during the Federation-Klingon War, this star system was occupied by the Klingons. (DIS: "The War Without, The War Within")

Stellar cartography[]

In 2256, this system's location was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the USS Discovery. (TNG: "The Vengeance Factor"; DIS: "Magic to Make the Sanest Man Go Mad")

In 2259, the location of this system was labeled on a stellar cartography chart that was seen on the USS Enterprise's ready room viewscreen. This system's symbol had a blue color, indicating that it was affiliated with the United Federation of Planets. (SNW: "Strange New Worlds", "Children of the Comet", "Spock Amok")

The system's location was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters in 2399 and on the bridge of the USS Titan-A in 2401. The Gamma Hromi system was in or near to Klingon space. (PIC: "Maps and Legends", "The Next Generation", "Disengage")

This star was only mentioned in writing.
The stars of the Gamma Hromi system were classified as a G-class star, K-class stars, and M-class star by the Star Trek: Star Charts (pp. 61, 66) and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385").
In the Bayer designation, which was a system of stellar classification, the Greek letter indicated the brightness of a star in a constellation. In this case, Gamma Hromi would be the 3rd brightest star in its constellation.