(References to Jeronimo)
Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)
X: 182.88 Y: 343.07[e]
 Planetary History
 Clan Invasion of 3050
Jeronime was targeted by Clan Smoke Jaguar in their Fourth Wave of Operation Revival in September 3050. Star Colonel Paul Moon, lead the Trial of Possession against the planet's defenders, 5th Galedon Regulars. Moon had originally bid his Trinary Assault and Binary of Elementals from his 3rd Jaguar Cavailiers to fight the Trial. However the fighting in the Topside Woods with the 5th Galedon proved too much. Moon was forced to call down the cluster's Second Trinary Battle to over come the Galedon regiment. The Combine forces only managed to get Battalions worth of their own off the planet.
 Operation Bulldog
During Operation Bulldog, the reborn SLDF offensive campaign to remove Clan Smoke Jaguar for Draconis Combine occupied worlds in 3059. When word of the attacks of enemy forces begun to ring out, Part of the garrison force, consisting of the Delta Galaxy's Command Trinary and 3rd Assault Cluster launched their own counter-attack, leaving Elements of Jaguar's Omega Galaxy to fend off attacks by 14th Alshain Avengers and other elite SLDF forces. The two garrison forces, the 10th Jaguar Regulars Cluster and Omega's Command Trinary fought fearst campaign against the forces claiming they were part of the SLDF. However, the when they received recall order, the 10th Jaguars Regulars fought delaying action to allow the Command Trinary to escape. The SLDF forces only left six survivors among the Jaguar Warriors.
 Garrisoning Military Force
 Owner History
- 2596 - Draconis Combine 
- 2750 - Draconis Combine 
- 2765 - Draconis Combine 
- 3025 - Draconis Combine
- 3030 - Draconis Combine
- 3040 - Draconis Combine
- 3052 - Clan Smoke Jaguar
- 3057 - Clan Smoke Jaguar
- 3062 - Draconis Combine
- 3067 - Draconis Combine
- 3130 - Draconis Combine 
 Nearby Planets
- ↑ Invading Clans, p. 67, "Jeronimo (DC)" - Battle for Jeronimo between the combine and Jaguars.
- ↑ The Dragon Roars, pp. 12, 54-56, "Deployment Tables & Let Slip The Dogma of War" - Information from scenario-book from Operation Bulldog of events of Jeronimo.
- ↑ Objective Raids, p. 64, "Unit Note"
- ↑ Historical: Reunification War, p. 159, "Inner Sphere Map "
- ↑ Era Report: 2750, p. 37, "Inner Sphere - 2750"
- ↑ Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere - 2765"
- ↑ Map of the Inner Sphere 3130