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Arcturus 3151.svg
System Information
X:Y Coordinates-78.068 : 174.436[e]
Spectral classK2III[1][2][3]
Recharge time193 hours[4]
Recharge station(s)Nadir, Zenith[1][4]

The Arcturus system is the location of at least one inhabited world, Arcturus V, and as of June 3152 was the capital of the Tamar Pact.[5]

System Description[edit]

Arcturus is located near the Leganes and Qualip systems.[6]

System History[edit]

The Arcturus system was settled during or shortly after the First Exodus from Terra, and Arcturus was a part of the Tamar Pact prior to the formation of the Lyran Commonwealth in the first half of the twenty-fourth century.[7]

Political Affiliation[edit]

Arcturus V[edit]

Arcturus in orbit.jpg
Also known asArcturus V
System positionFifth[1][2][3]
Jump Point distance4.85 days[2][3]
Moons3 (Donegal, Skye, Tamar)[2][3]
Surface gravity1.02[2][3]
Atmospheric pressureStandard (Breathable)[2][3][4]
Equatorial temperature33°C (Mild-Temperate)[2][3]
Surface water43%[2][3]
Highest native lifeMammal[1][2][3]
Landmasses5 (Attenia, Borreus, Chadrik, Dustina, Penrod)[2]
History and Culture
Population1,013,000,000 (3067),[2]
1,000,000,000 (3079)[3]
Government and Infrastructure
Noble RulerDuke of Arcturus
Political LeaderPlanetary Governor
HPG ClassA[1][3][4]
HPG RepresentativePrecentor Millicent Kellsy (3025)[1]

Arcturus V, more commonly known simply as Arcturus, is the fifth planet in the Arcuturus system and has served as the capital world of the Lyran Commonwealth. Arcturus has three moons named Donegal, Skye, and Tamar.[2][3]

Planetary History[edit]

Arcturus was the original capital of the Lyran Commonwealth at their founding in 2341, home to Arcturan Arms and serving as seat of government to the Nine Archons. Eventually, with the Draconis Combine slowly gaining ground in the Tamar Pact to directly threaten Arcturus with an invasion, Archon Marsden proposed a switch of the capital to his own homeworld of Tharkad in the Donegal Protectorate, which was accepted by the other Archons.

The resulting population shift as inhabitants followed the capital has left a series of cities on the world that are vastly oversized for the current population. Many of the citizens moved to the countryside as well, making the cities feel even emptier. Several of these cities remain in use, but with dramatically reduced populations. Many of the rest of them have been destroyed by the environment as nature reclaims the land.[2]

Arcturus' economy shifted focus as well. No longer based on serving the politicians and government, agriculture instead forms the core of the planet's economy. The other noteworthy aspect of the citizenry is their strong (almost fanatical) support of the Steiner family. Many Arcturans joined the LCAF as soon as they can, eager to see more of the nation that their world formerly oversaw.[2]

The Jihad[edit]

On 18 February 3073, Archon Peter Steiner-Davion gave his blessing to a plan formed by Chandrasekhar Kurita, cousin to former Coordinator Theodore Kurita, to build a base on Arcturus for use by a multinational coalition of forces Chandrasekhar had pulled together to oppose the Word of Blake.[38][39] Sorenson's Sabres were seen operating on Arcturus as a part of Chandrasekhar Kurita's hired forces later in 3073.[40]

On 11 May 3073, the Word of Blake attacked Arcturus, targeting the coalition of forces Chandrasekhar Kurita had assembled. Both sides took heavy losses, and yet while the Word of Blake forces had a tactical advantage over the collection of mercenary units and independent forces assembled by Chandrasekhar, the Blakists withdrew unexpectedly.[39][41] Among the casualties inflicted on the Blakists was the loss of a Union-class DropShip, destroyed by an ancient Vulture-class DropShip named the Samhain in service with the Devil's Brigade mercenary unit, a loss which earned the Samhain's pilot a reward for bravery from a grateful Lord Kurita.[42]

On 15 May 3074, Archon Adam Steiner announced his engagement to Heather Fyhne, daughter of Duchess Arielle Fyhne, the ruling Duchess of Arcturus.[43][44]


Having taken heavy damage during the nuclear raids conducted by the Word of Blake during the Jihad, the bulk of the military production on Arcturus had been destroyed; however, the ancient capital of the Alliance rebuilt some of the old armaments factories and began producing arms again, boosting the Alliance's production capabilities in a small way as the battered LAAF rebuilt.[45] In September 3081, Arcturan Arms told the Interstellar News Network that their refit facilities would be producing considerable numbers of the primitive Archer, Commando, and Dervish for some decades yet, which the RetroTech 'Mechs seen as being ideal for organizations such as militia forces.[46]

Dark Age[edit]

Arcturus was conquered by Clan Wolf in 3128 in a battle which saw a company of LCAF 'Mechs fall to a single Crossbow pilot. The Arcturus Arms factory was subsequently used to mass produce that design for the Clan Wolf touman.[30]

Following Clan Wolf's migration in the late 3130s, Clan Jade Falcon claimed the now-abandoned Arcturus but neglected the Arcturus Arms factory and its Crossbow output.[30]

Military Deployment[edit]


  • Twenty-third Arcturan Guards[52]
- At this point in time, the Twenty-third was operating at 30% of full strength, with 85% of their equipment featuring upgraded technology.




Arcturus World Map

Arcturus has five continents named Attenia, Borreus, Chadrik, Dustina, and Penrod.[2]

Planetary Locations[edit]

  • Malcheema: the planetary capital city[2][3]

Industrial Centers[edit]


Image gallery[edit]

Map Gallery[edit]

Nearby Systems[edit]

Closest 40 systems (39 within 60 light-years)
Distance in light years, closest systems first:
Leganes 14.2 Qualip 15.8 Lucianca 21.9 Garrison 25.8
Surcin 26.5 Apostica 26.5 Kelenfold 31.5 Ginestra 34.4
Breukelen 34.6 Grunwald 34.6 Carstairs 35.2 Borghese 36.1
Blue Diamond 37.1 Ganshoren 38.3 Kockengen 41.3 Morningside 42.9
Odessa 44.1 Auldhouse 44.4 Fatima 46.8 Symington 47.7
Porrima 50.3 Kirkcaldy 50.7 Meacham 51.0 Rasalgethi 52.3
Summit 52.4 Vaj 52.4 Orestes 52.4 Al Hillah 52.9
Yed Prior 52.9 Lyndon 54.0 Dalkeith 54.3 Tomans 55.0
Edasich 56.8 Crimond 57.0 Fort Loudon 57.4 Sakhalin 58.6
Karbala 58.7 Hillerod 59.8 Eaglesham 59.9 Pandora 60.7


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 House Steiner (The Lyran Commonwealth), p. 173: "Arcturus" planet profile
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 Handbook: House Steiner, pp. 84–85: "Arcturus" planet profile
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 Objectives: Lyran Alliance, p. 23
  4. 4.0 4.1 4.2 4.3 4.4 Tamar Rising, poster map
  5. 5.0 5.1 Tamar Rising, p. 72
  6. 6.0 6.1 Era Report: 2750, p. 37
  7. 7.0 7.1 7.2 Handbook: House Steiner, p. 13
  8. Handbook: House Steiner, p. 25
  9. Historical: Reunification War, p. 159
  10. Historical: Liberation of Terra Volume 1, p. 11
  11. First Succession War, pp. 24–25
  12. Handbook: House Steiner, p. 36
  13. First Succession War, pp. 112–113
  14. Handbook: House Steiner, p. 40"
  15. Handbook: House Steiner, p. 47
  16. Handbook: House Steiner, p. 56
  17. Handbook: House Steiner, p. 59
  18. Historical: War of 3039, p. 133
  19. Era Report: 3052, p. 11
  20. Handbook: House Steiner, p. 61
  21. Era Report: 3052, p. 24
  22. Era Report: 3062, p. 11
  23. Era Report: 3062, p. 30
  24. Handbook: House Steiner, p. 70
  25. Jihad: Final Reckoning, p. 42
  26. Jihad Secrets: The Blake Documents, p. 65
  27. Field Report: LAAF, p. 21
  28. Jihad: Final Reckoning, p. 63
  29. Field Manual: 3085, p. vii: "Inner Sphere Map - [October 3085]"
  30. 30.0 30.1 30.2 Recognition Guide: ilClan, vol. 17, p. 12: "Crossbow" entry
  31. Era Report: 3145, p. 11
  32. 32.0 32.1 32.2 32.3 Tamar Rising, p. 25
  33. Era Report: 3145, p. 39
  34. Field Manual: 3145, p. VI: "Inner Sphere - 3145"
  35. Shattered Fortress, p. 103
  36. The Price of Duty, ch. 1
  37. Tamar Rising, p. 27: "Growing Pains"
  38. Jihad Hot Spots: 3076, p. 26: "Timeline of the Jihad"
  39. 39.0 39.1 Jihad: Final Reckoning, p. 51: "The Jihad In Review"
  40. Jihad Turning Points: Luthien, pp. 6–7: "Combatants"
  41. Jihad Hot Spots: 3076, p. 31: "Timeline of the Jihad"
  42. Technical Readout: 3075, p. 214: "Vulture"
  43. Jihad Hot Spots: 3076, p. 52: "Timeline of the Jihad"
  44. Jihad: Final Reckoning, p. 52: "The Jihad In Review"
  45. Jihad: Final Reckoning, p. 85: "Donegal Province"
  46. Jihad: Final Reckoning, p. 33: "The Retro Wave"
  47. Field Manual: SLDF, p. 255: "SLDF - Lyran Commonwealth Military Command Map"
  48. Field Report 2765: LCAF, p. 9: "Regimental Status"
  49. First Succession War, p. 139: "First Succession War Deployment Table - LCAF"
  50. Historical: War of 3039, p. 137: "Deployment Table"
  51. Jihad Secrets: The Blake Documents, p. 110: "Word of Blake Mercenary Deployment"
  52. Field Report: LAAF, p. 10: "Arcturan Guards Regimental Status"
  53. 53.0 53.1 Field Manual: 3085, p. 109: "Deployment Table - 3085"
  54. Field Manual: 3145, p. 168: "Epsilon Galaxy"
  55. Elements of Treason: Duty, ch. 2
  56. Elements of Treason: Duty, ch. 5
  57. Elements of Treason: Duty, ch. 12