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Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)

Regulus nearby systems (3151)
Regulus nearby systems (3151)
(Map Legend)
System Information
X:Y Coordinates -152.066 : -180.024[e]
Spectral class K6III[1]
Recharge time 197 hours[1]
Recharge station(s) Nadir, Zenith (3076)[1]
Planetary flag of Regulus
Planetary flag of Regulus
System position 4th[1]
Jump point
3.91 days[1]
Moons 1 (Zamzama)[1]
Surface gravity 0.95[1]
Atmospheric pressure Standard (Breathable)[1]
Equatorial temperature 45°C (Tropical)[1]
Surface water 53%[1]
Highest native life Reptiles (10%)[1]
Reference Year 3076
Ruler Count Derick Cameron-Jones (3025)[2]
Prince Titus Cameron-Jones (3076)[1]
Population 3,139,000,000 (3025)[2]
3,110,250,000 (3076)[1]
Socio-Industrial Levels A-B-B-A-B[1]
HPG (Representative) A
(Precentor Aldo Marabi (3025)[2])

Political AffiliationEdit

Planetary HistoryEdit

The Star LeagueEdit

During the Star League era, SLDF troops would form part of the honor guard for the ruling family of the Principality of Regulus. This caused some tension with the local Regulan Hussars troops, but was appreciated by the ruling Cameron-Jones family.[30]

The JihadEdit

On the 6th of June 3072 Regulus city was set ablaze by the Forty-ninth Shadow Division; the Word of Blake unit surprised the planetary defenders when they executed an unexpected combat drop into the center of the city before setting the city on fire.[31][32] The Eagle-class frigate FWLS Leodegrance was also destroyed in the Regulus system by the Blakists in 3072,[33] and the Fiftieth Shadow Division then visited Regulus on the 30th of March 3076,[34][35] transported by the Thera-class carrier FWLS Corinth and her attendant DropShips, to deliver Precentor Manei Domini Apollyon and his stark warning from The Master to Prince Titus Cameron-Jones regarding what Apollyon termed "military adventurism."[34][35][36] Colonel Michelle Cameron-Jones - commanding officer of the First Regulan Hussars and wife of Prince Titus - arranged an ambush on the ground intended to kill the Blakist forces, using concealed commandos with a regiment of artillery in reserve; Apollyon's Manei Domini bodyguards included Nephilim battle armor troops who disrupted the ambush, killing the commandos and injuring Prince Titus as an object lesson.[36]

On the 15th of July 3077 it was reported that the Third Free World Guards had arrived on Regulus to pledge their collective loyalty to the Principality of Regulus. This move was met with some skepticism by the press due to the very real concern that the arrival of the Third Guards was an attempt by the Word of Blake to gain an operational presence within the Principality, as seemed likely given that the Third Guards had last been reported to be on Wing fighting on behalf of the Blakists against Devlin Stone's allied coalition forces. However, as stated by General Thomas Orfelt, the Principality couldn't turn it's back on fellow countrymen if the Third Guards were genuine in their desire to defect to the Principality.[37]

Military DeploymentEdit

Industrial Manufacturing CentersEdit

Planetary LocationsEdit

  • Regulus City - capital city of Regulus and site of the Masterston Memorial Spaceport.[51]

Nearby SystemsEdit

Closest 36 systems (34 within 60 light-years)
Distance in light years, closest systems first:
Muscida 12.7 Harmony 14.0 Cameron 17.7 Aitutaki 18.4
Köln 26.1 Ngake 28.7 Heart Fjord 28.8 Hellos Minor 33.4
Avior 39.0 Elektrougli 39.1 Zara 41.1 Faleolo 41.5
Ionus 41.6 Dayr Khuna 41.7 Atreus 42.3 Tiber 43.1
Tongatapu 43.2 Keeling 43.2 Pec 45.0 New Praha 47.7
Wallis 48.7 New Olympia 49.8 Jouques 52.2 Camlann 53.9
Ragusa 54.4 Alta 54.6 Hódmezovásárhely 55.7 Manihiki 56.6
Newcastle 56.6 Alterf 57.7 Futuna 58.6 Kirkenlaard 58.8
Kyeinnisan 59.2 Jászberény 59.8 Dalton 61.7 Drusibacken 63.3


  • The destruction of the FWLS Leodegrance in the Regulus system (and the destruction of seven other Free Worlds League WarShips unaccounted for specifically by name in sourcebooks) was confirmed by the BattleTech Developer Øystein Tvedten via the Catalyst Game Labs Ask The Writers Forum:
Delphi (Thera-Class) - Destroyed by Word of Blake, 3068

Thessaly (Thera-Class) - never completed, scuttled in dock by loyalists to keep it out of blakists hands in 3068
Kay (Eagle-Class) - Destroyed by Word of Blake, 3068
Leodegrance (Eagle-Class) - Destroyed by Word of Blake at Regulus, 3072
Phrygia (Impavido-Class) - Destroyed at Atreus, 3077
Raven (Essex-Class) - Destroyed at Atreus, 3077
Attica (Zechetinu-Class) - Destroyed by Word of Blake, 3068
Liberty (Vincent-Class) - Destroyed by Word of Blake, 3068

With regards,

  — Øystein Tvedten, 07 December 2013


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 Masters and Minions: The StarCorps Dossiers, p. 77, "FWL Key Worlds"
  2. 2.0 2.1 2.2 House Marik (The Free Worlds League), p. 159, "Planet Guide"
  3. 3.0 3.1 Handbook: House Marik, p. 13, "Principality of Regulus world within the Free Worlds League befor [2270] and after at their founding in [2271]"
  4. Handbook: House Marik, p. 24, "Free Worlds League after Age of War [2571]"
  5. Historical: Reunification War, p. 158, "Inner Sphere - 2596"
  6. Era Report: 2750, p. 36, "Inner Sphere - 2750"
  7. Historical: Liberation of Terra Volume 1, p. 10, "Inner Sphere - 2765"
  8. First Succession War (Source Book), pp. 24-25, "Inner Sphere - [2786] Map"
  9. Handbook: House Marik, p. 34, "Free Worlds League after First Succession War [2822]"
  10. First Succession War (Source Book), pp. 112-113, "Inner Sphere - [2822] Map"
  11. Handbook: House Marik, p. 38, "Free Worlds League after Second Succession War [2864]"
  12. House Marik (The Free Worlds League), p. 169, "Free Worlds League - Map"
  13. Handbook: House Marik, p. 51, "Free Worlds League after Fourth Succession War [3030]"
  14. Historical: War of 3039, p. 132, "Inner Sphere - 3040"
  15. Era Report: 3052, p. 10, "Inner Sphere - 3050"
  16. Era Report: 3052, p. 22, "Inner Sphere - 3052"
  17. Era Report: 3062, p. 10, "Inner Sphere - 3057"
  18. Handbook: House Marik, p. 54, "Free Worlds League after Operation Guerrero [3058]"
  19. Era Report: 3062, p. 28, "Inner Sphere - 3063"
  20. Handbook: House Marik, p. 56, "Free Worlds League after FedCom Civil War [3067]"
  21. ' Jihad: Final Reckoning, p. 41, "Inner Sphere Map - [October 3067]
  22. Jihad Secrets: The Blake Documents, p. 64, Inner Sphere [3075] Map
  23. Field Report: FWLM, p. 17, "Free Worlds League Military Deployment Map - August 3079"
  24. Jihad: Final Reckoning, p. 62, "Inner Sphere - March 3081"
  25. Field Manual: 3085, p. vii, "Inner Sphere Map - [October 3085]"
  26. Map of the Inner Sphere 3130
  27. Era Report: 3145, p. 10, "Inner Sphere - 3135"
  28. Era Report: 3145, p. 38, "Inner Sphere - 3145"
  29. Shattered Fortress, p. 102
  30. Field Manual: SLDF, p. 113, "70th Mechanized Infantry Division"
  31. Jihad Hot Spots: 3076, p. 22, "Timeline of the Jihad"
  32. Jihad: Final Reckoning, p. 50, "The Jihad In Review"
  33. BattleTech Developer confirms the destruction of the Leodegrance
  34. 34.0 34.1 Jihad Hot Spots: Terra, p. 21, "Timeline of the Jihad"
  35. 35.0 35.1 Jihad: Final Reckoning, p. 55, "The Jihad In Review"
  36. 36.0 36.1 Jihad Hot Spots: 3076, p. 4-8, "Sins of the Father"
  37. Jihad Hot Spots: Terra, p. 47-48, "Third Guards Defect"
  38. Field Manual: SLDF, p. 254, "SLDF - Free Worlds League Military Command Map"
  39. Field Report 2765: FWLM, p. 16, "Regimental Status"
  40. First Succession War (Source Book), p. 138, "First Succession War Deployment Table - FWLM"
  41. House Marik (The Free Worlds League), p. 109, "Unit Deployment Table"
  42. 20 Year Update, p. 57, "Free Worlds League Deployment Table"
  43. 20 Year Update, p. 71, "Com Guards Deployment Table"
  44. Objective Raids, p. 39, "Free Worlds League Deployment Table"
  45. Field Manual: Free Worlds League, p. 115, "Free Worlds League Deployment Table"
  46. Field Manual: Updates, p. 162, "Free Worlds League Deployment Table"
  47. 47.0 47.1 Field Report: FWLM, p. 9, "Principality of Regulus"
  48. Field Manual: 3085, p. 92, "Deployment Table - 3085"
  49. 49.0 49.1 Field Manual: 3145, p. 116, "Regulan Strategic Military Command"
  50. Technical Readout: 3145 Free Worlds League, p. 6-7, "Ogre Battle Armor"
  51. Jihad Hot Spots: 3076, p. 4, "Sins of the Father"