Summer 3151.svg
System Information
X:Y Coordinates-44.468 : 26.058[e]
Spectral classM4V[1][2][3]
Recharge time205 hours[2]
Recharge station(s)Nadir[1][2]

System Description[edit]

Summer is located near the Menkent and Mizar systems.

Political Affiliation[edit]

Summer I[edit]

Summer I
System positionFirst[1][2][3]
Jump Point distance2.56 days[2]
MoonsOne (Niflheim)[2][3]
Surface gravity1.03[2][3]
Atmospheric pressureStandard (Breathable)[2]
Equatorial temperature42° C (Tropical)[2]
Surface water77%[2][3]
Highest native lifePlants,[2][3] 20%[1]
Landmasses4[3] (Wessler, Lestrade, Aberdale)[2]
History and Culture
Population2,561,000,000 (3067),[2]
894,000,000 (3130)[3][43]
Government and Infrastructure
Noble RulerDuke of Summer
Political LeaderPlanetary Governor
Military CommanderLegate Carlos Adler (3130)[3][43]
CapitalCuritiba (until 3069),[3]
Mount Breighton (3130)[3]
HPG ClassA[1][2]
HPG RepresentativePrecentor Dewayne Vetters (3025)[1]

Planetary History[edit]

Early History[edit]

Summer was settled during the first Exodus from Terra but the infertility of the local soil made agricultural endeavors difficult, if not impossible. This forced the population to build trading partnerships with a number of nearby worlds; exploiting the oil and radioactive materials for trade purposes, the export of both formed the basis of the planetary economy.[3] Summer was soon a valuable world within the Federation of Skye, with cities springing up across all four continents. The cities were invariably located close to the reserves of ore and oil, despite the difficulty in traveling overland between settlements because of the mountain ranges.[3]

By the end of the Reunification War, Summer formed a part of the Tyrfing Province of the Terran Hegemony.[6]

Star League Era[edit]

During the Star League era, germanium deposits were discovered in the Balise Mountains on the southern continent of Wessler.[2][3] Summer's economy was already booming, but the germanium deposits encouraged the development of manufacturing industries producing JumpShip components. The JumpShip industry in turn prompted the Star League Defense Force to install a substantial garrison on Summer and to construct a number of Castles Brian. During the Amaris Civil War many of the facilities and industries on Summer were damaged, but the planet remained a viable enough economic and industrial center to make it a valuable addition to the Lyran Commonwealth[3] despite the destruction of the majority of the shipbuilding industries.[2]

The Succession Wars[edit]

The Lyran Commonwealth Armed Forces used Summer as a base for raiding into the Draconis Combine, and Summer attracted Kuritan raids in return; while the Succession Wars saw many of the aging petrochemical refineries damaged, but the planet retained much of its industry. The output from the damaged facilities had an increasingly damaging effect on the planetary ozone layer, and this damage was accelerated by the heavy DropShip traffic Summer was host to. The difficulty of overland travel made DropShip activity very frequent on Summer, with the planet boasting ten active spaceports all in heavy use.[3]

Third Succession War[edit]

In 3016, Colonel Sarah Weisz led Delta Regiment from Wolf's Dragoons in a raid on Summer. She gained the Free Worlds League several vital JumpShip components during the action.[18]

By the end of the Third Succession War, Summer was both the political center of the Skye Province and the beating heart of the Skye separatist movement, championed by Duke Aldo Lestrade IV. The center of the separatist movement on Summer itself was the city of Curitiba, the largest city on the planet, and home to Duke Lestrade's palace, which loomed imposingly over the city. In addition to the production of oil and radioactives, Summer was notable for possessing factories that produced JumpShip components.[1] Summer was still tied strongly to the Seventeenth Skye Rangers regiment as a result of the historical agreement that at least half of the Seventeenth's MechWarriors had to be recruited from Summer.[44]

With the death of Duke Aldo Lestrade IV in the late 3020s the Lestrade family fell from grace, and control over the planet was acquired by the Hayne family, an old Summer family that had dominated the polar continent of Aberdale for a long time. The Hayne influence was partly tied to the commercial refineries found on Aberdale, whose output effectively controlled more than a fifth of the planetary income of Summer.[2]

Apocryphal Content Starts

The information after this notice comes from apocryphal sources; the canonicity of such information is uncertain.
Please view the reference page for information regarding their canonicity.

FedCom Accords[edit]

Once a respected member of Steiner High Command, General Lionel Stanz was vehemently opposed to Steiner's alliance with House Davion and he resigned in frustration. In early 3028, Steiner intelligence learned that Stanz had stolen a Peacemaker nuclear device and was threatening to cleanse the Skye Province of foreigners. Because Stanz still had supporters inside Lyran command, a mercenary unit was contracted to intervene. They destroyed two relay stations and the remote detonator on Muphrid to prevent Stanz from launching the nuke, but he was able to escape off-world with it. Loki agents tracked Stanz's JumpShip to Summer, where the Fifth Lyran Guards and mercenaries were able to capture the warhead and kill Stanz in the process.[45]

Apocryphal Content Ends

The Jihad[edit]

Following the invasion of the Free Worlds League by the Skye and Bolan Provinces of the Lyran Alliance in what was termed Operation ÜBERSCHATTEN, Marshall Jeremy Brett took command of the local FWLM and launched a counteroffensive, under the name Operation BROKEN FIST. BROKEN FIST went beyond simply attempting to recapture worlds that the Lyrans had seized, striking into Lyran space at numerous worlds. Summer was one of the worlds hit and was attacked by the League forces on 1 September 3068. The League would keep control of Summer until 7 January 3069, when Lyran Alliance forces recaptured the planet.[32] When the LAAF forces attempted to force Word of Blake from the HPG compounds, the Blakist units turned their guns on the compounds themselves and though no vital components of the generators were damaged many supplementary facilities such as barracks and administrative buildings were heavily damaged.[33]

On 27 September 3069, ComStar forces were mustering on Summer when the planet came under attack from Word of Blake forces. The Blakist attack used Pocket WarShips and aerospace fighters to attack the planet and as a part of their attack used a powerful nuclear weapon to destroy Curitiba, the planetary capital city, along with the bulk of the ComStar and LAAF units on the planet. Despite the damage dealt to Summer's defenders, the Word of Blake didn't attempt to occupy the planet, but instead simply moved on.[46] The long-term damage on Summer as a result of the Blakist attack was significant; in addition to the three million people killed in the Curitiba bombing, much of heavy industry on the Lestrade continent was also devastated in the blast as was the countryside around Curitiba.[3]

The devastation inflicted on Summer led to an exodus of much of the population off-world.[3]

The Dark Age[edit]

The incorporation of Summer into the Republic of the Sphere helped to reverse the population exodus, and while the cities on Lestrade were largely abandoned, the economy began to rebuild. The city of Mount Breighton on the northern polar continent of Aberdale became the new planetary capital as well as the heart of the reconstruction and rebuilding efforts. Summer InterStellar Components began producing JumpShip parts again in the 3120s.[3]

Military Deployment[edit]




  • First Kell Hounds[51]


  • First Kell Hounds[52]
  • First Battalion[52]
  • Second Battalion[52]



The planet orbits a relatively cool M-class star; the four major continents of the world are marked by numerous mountain chains that run across them, and the combination of Summer's close orbital path to the system primary and a slowly fading ozone layer make the planet warmer than it might appear.[3] The soil native to Summer is infertile and incapable of supporting more than the indigenous scrub grass—which is purple in color—but Summer possesses reserves of various radioactive ores, as well as deposits of crude oil.[2][3] A relatively dark world thanks to the dim system primary, Summer is characterized by hills that appear as dark and ominous shapes that loom over Summer's many valleys, leaving the valleys steeped in shadows. The native plant life on Summer produces odd odors when it blooms, and these odors often taint the wind during summer months.[1] Of the four continents, one is named Wessler, another is named Lestrade, and a third Aberdale.[2]

Apocryphal Content Starts

The information after this notice comes from apocryphal sources; the canonicity of such information is uncertain.
Please view the reference page for information regarding their canonicity.

In the MechWarrior 5: Mercenaries High Reward Quest "Stop the Launch," Summer is depicted as an iron oxide biome with good visibility.[45]

Apocryphal Content Ends

Planetary Locations[edit]

  • Mount Breighton: capital city in 3130[3]
  • Lestrade (continent)
  • Curitiba: Capital city until 3069.[3]
  • Mount Curitiba[54]
  • Wessler (continent)
  • Balise Mountains

Companies and Industries[edit]

Image gallery[edit]

Map Gallery[edit]

Nearby Systems[edit]

Closest 72 systems (72 within 60 light-years)
Distance in light years, closest systems first:
Menkent 6.9 Mizar 11.4 Haddings 12.1 Galatea 12.3
Zollikofen 16.9 Syrma 18.8 Alioth 18.9 Nusakan 19.8
Muphrid 20.2 Cor Caroli 20.7 Alkalurops 20.9 Lipton 22.3
Zebebelgenubi 22.8 Chara 24.9 Lyons 24.9 Thorin 27.7
Rocky 27.8 Skye 28.3 Denebola 28.5 Zavijava 29.2
Afleir 29.8 Alcor 30.4 Milton 30.6 Ko 31.8
Skondia 32.1 Alchiba 33.6 Oliver 35.4 Alphecca 36.0
Xi Ursae Majoris 36.8 Yorii 36.8 Zosma 36.9 Atria 38.3
Tau Ceti 39.5 Phecda 40.8 Wyatt 41.3 Killbourn 41.5
Graham 42.0 Devil's Rock 42.2 Castor 42.9 Imbros 43.1
Kochab 43.5 Pollux 43.6 Unukalhai 43.7 Marcus 44.1
Sabik 44.4 Gacrux 44.7 Callison 44.9 Dromini 46.5
Lone Star 46.7 Rigil Kentarus 47.8 Wing 48.1 La Blon 48.5
Asta 48.6 Dubhe 49.6 Chertan 51.4 Sol 51.5
Dyev 52.3 New Dallas 52.6 Seginus 52.8 Carsphairn 53.3
Shiloh 53.6 Alkaid 53.9 Sirius 53.9 Procyon 54.2
Altair 54.7 Tabit 55.6 Alhena 55.6 Vindemiatrix 55.9
Dieron 57.8 Hechnar 59.0 Carnwath 59.4 Keid 59.8


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 House Steiner (The Lyran Commonwealth, p. 167: "Summer"
  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 2.18 Handbook: House Steiner, p. 90: "Summer" planet profile; reproduced in CBT Introductory Rulebook, p. 63
  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 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 Dark Age: Republic Worlds (3130), p. 198: "Summer World Profile"
  4. Handbook: House Marik, p. 16
  5. Handbook: House Steiner, p. 13
  6. 6.0 6.1 Historical: Reunification War, p. 159
  7. Era Report: 2750, p. 37
  8. Field Manual: SLDF, p. xi: "Inner Sphere - [2764] Map"
  9. Historical: Liberation of Terra Volume 1, p. 11
  10. Historical: Liberation of Terra Volume 1, p. 104
  11. 11.0 11.1 Historical: Liberation of Terra Volume 1, p. 138
  12. 12.0 12.1 Historical: Liberation of Terra Volume 2, p. 118
  13. First Succession War, pp. 24–25
  14. Handbook: House Steiner, p. 36
  15. Historical: Liberation of Terra Volume 2, pp. 122–123
  16. First Succession War, pp. 112–113
  17. Handbook: House Steiner, p. 40
  18. 18.0 18.1 Wolf's Dragoons, p. 22
  19. House Kurita (The Draconis Combine), p. 132
  20. House Steiner (The Lyran Commonwealth), foldout: "Lyran Commonwealth Map - [3025]"
  21. Handbook: House Steiner, p. 47
  22. Handbook: House Steiner, p. 56
  23. Handbook: House Steiner, p. 59
  24. Historical: War of 3039, p. 132
  25. Era Report: 3052, p. 11
  26. Handbook: House Steiner, p. 61
  27. Era Report: 3052, p. 23
  28. Era Report: 3062, p. 11
  29. Era Report: 3062, p. 28
  30. Handbook: House Steiner, p. 70
  31. Jihad: Final Reckoning, p. 42
  32. 32.0 32.1 32.2 Jihad: Final Reckoning, p. 46: "The Jihad in Review"
  33. 33.0 33.1 Alliance Recovers Summer, Mizar
  34. Jihad Secrets: The Blake Documents, p. 64
  35. Jihad: Final Reckoning, p. 63
  36. Field Manual: 3085, p. vii: "Inner Sphere - [3085] Map"
  37. Flight of the Falcon, ch. 21
  38. Era Report: 3145, p. 11
  39. Era Report: 3145, p. 39
  40. Field Manual: 3145, p. VI: "Inner Sphere - [3145] Map"
  41. Shattered Fortress, p. 103
  42. Dominions Divided, p. 85 - RASALHAGUE DOMINION JUNE 3152 Map - Summer shown on map as unaligned world
  43. 43.0 43.1 Dark Age: Republic of the Sphere, p. 18: "Prefecture VIII"
  44. House Steiner (The Lyran Commonwealth), p. 63: "Regimental Nicknames (continued)"
  45. 45.0 45.1 MechWarrior 5: Mercenaries, "Stop the Launch"
  46. Jihad: Final Reckoning, p. 47: "The Jihad in Review"
  47. 47.0 47.1 First Succession War, p. 139: "First Succession War Deployment Table - LCAF"
  48. House Steiner (The Lyran Commonwealth), p. 117: "Unit Deployment Table"
  49. 49.0 49.1 49.2 NAIS The Fourth Succession War Military Atlas Volume 1, p. 45: "Operation GÖTTERDÄMMERUNG"
  50. Historical: War of 3039, p. 138: "Deployment Table"
  51. 51.0 51.1 Historical: War of 3039, p. 141: "Deployment Table"
  52. 52.0 52.1 52.2 20 Year Update, p. 27: "Federated Commonwealth Deployment Table"
  53. Objective Raids, p. 19: "FedCom Deployment Table"
  54. 54.0 54.1 House Steiner (The Lyran Commonwealth) - "Aldo Lestrade IV profile", p. 153