Castellus Solar-system

System Specs:

  • Stellar Mass:  _ Sol Masses
  • Stellar Class:  _
  • Luminosity:  _ Sol
  • Planets:  5
  • Moons:  0
  • Asteroid Belts:  2
  • Asteroids:  0
  • Objects:  0

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Planets Directory:

  1. Carborix
  2. Nios
  3. Digeris
  4. Fiax
  5. Iritum

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Carborix:

  • Orbital Distance:  0.4 AU
  • Orbital Period:  0.3 Earth-years
  • Keplerian Ratio:  0.711
  • Radius:  2,579 km
  • Day Length:  28.8 Earth-hours
  • Atmospheric Pressure:  (trace) atm
  • Surface Temp:  268 °C
  • Surface Gravity:  0.51 g
  • Mass:  0.083 Earth-masses

A tiny rock planet with a thin, reducing atmosphere, Carborix was remotely mined for millennia, first for rarer platinum-group metals and radioactives, then catalysts and semi-conductors, and eventually structural materials like titanium, iron, and nickel. Recovery operations were grinding to a halt just before the Reapers hit the planet. The attack turned orbital stations and the turians‘ early-warning satellites into molten metal.

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Nios:

  • Orbital Distance:  0.75 AU
  • Orbital Period:  0.7 Earth-years
  • Keplerian Ratio:  0.861
  • Radius:  2,849 km
  • Day Length:  29.4 Earth-hours
  • Atmospheric Pressure:  115.77 atm
  • Surface Temp:  756 °C
  • Surface Gravity:  0.39 g
  • Mass:  0.077 Earth-masses

A small terrestrial planet bathed in argon and carbon dioxide, Nios has a pressure-cooker atmosphere. Probes revealed calcite cliffs but few valuable minerals, and so the planet had only a few artificial satellites when the Reapers hit. Fragments from destroyed scientific research stations and spy drones litters the planet’s Lagrangian points, presenting a navigation hazard.

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Digeris:

  • Orbital Distance:  1.35 AU
  • Orbital Period:  1.6 Earth-years
  • Keplerian Ratio:  0.961
  • Radius:  4,061 km
  • Day Length:  37.2 Earth-hours
  • Atmospheric Pressure:  0.35 atm
  • Surface Temp:  21 °C
  • Surface Gravity:  0.69 g
  • Mass:  0.278 Earth-masses
  • Colony:  Turian (capital:  Apparitus, founded:  381 BCE, population:  1,900,000,000 pre-Reapers)

A hospitable world home to dextro-amino-acid-based life, this turian colony was famous, until recently, for being the site of the bloodiest battle in turian history. During the Krogan Rebellions, a warlord named Graken Dhal took the fight to Palaven‘s home cluster, bombarding the modestly defended Digeris. When reinforcements came to intercept him, Dhal’s navy put their rear to Digeris so that stray shots would hit the planet. The turians won despite this severe handicap, using countless fighters and cruisers to take down the krogan dreadnoughts.

Today, the turian fleet holds Digeris in a stalemate. The Reapers, concentrating on Palaven and elsewhere, sent a relatively light force to take the planet, which the turians repelled. The turians stand guard at Digeris while the Reapers travel throughout the system, destroying targets of opportunity until reinforcements arrive.

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Fiax:

  • Orbital Distance:  2.7 AU
  • Orbital Period:  4.4 Earth-years
  • Keplerian Ratio:  1.017
  • Radius:  9,735 km
  • Day Length:  68.6 Earth-hours
  • Atmospheric Pressure:  (trace) atm
  • Surface Temp:  -78 °C
  • Surface Gravity:  2.1 g
  • Mass:  4.856 Earth-masses

Fiax is a large terrestrial planet with a frozen surface and a thin nitrogen-based atmosphere. It presented the turians with an interesting engineering challenge; how to mine its abundant heavy metals and get them off the high-gravity planet without requiring so much fuel or eezo that it ruined the profit margin. As a result, the Hierarchy heavily subsidized these mining concerns, in return for retaining large stores of gold, iridium, and niobium for their strategic reserve.

Sensors report a large Reaper force of capital ships and destroyers here, which have chased off Fiax’s defenders. Interestingly, they seem to have captured several of the orbital stations intact rather than turn them to slag.

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Iritum:

  • Orbital Distance:  10.2 AU
  • Orbital Period:  32.7 Earth-years
  • Keplerian Ratio:  0.992
  • Radius:  53,884 km
  • Day Length:  12.8 Earth-hours
  • Atmospheric Pressure:  _ atm
  • Surface Temp:  _ °C
  • Surface Gravity:  _ g
  • Mass:  _ Earth-masses
  • Colony:  Turian (species in charge)

Iritum is a moderate-sized hydrogen-helium gas giant with clearly visible rings. Reaper capital ships have pounded the system’s moons, methodically destroying the colonies here and dismantling the infrastructure. The star chart extolling the natural beauty of the ring system seems quite inappropriate now.

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