🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.74

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.55 AU - 0.65 AU

Year: 300 Days

Day: 25.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 52.9

Radius: 9.4

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.7 AU - 0.82 AU

Year: 428 Days

Day: 10.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 44,588,410 km

• M1: 116,836 km (0.032 R)
• M2: 440,117 km (0.069 R)
• M3: 737,817 km (0.118 R)
• M4: 1,246,300 km (0.087 R)
• M5: 1,542,653 km (0.091 R)
• M6: 2,329,538 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.1

Radius: 8.8

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.81 AU - 0.87 AU

Year: 497 Days

Day: 11.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,588,410 km

• M1: 109,506 km (0.117 R)
• M2: 392,096 km (0.101 R)
• M3: 755,918 km (0.043 R)
• M4: 1,076,057 km (0.085 R)
• M5: 1,430,455 km (0.062 R)
• M6: 1,709,305 km (0.102 R)
• M7: 2,138,801 km (0.115 R)
• M8: 2,572,335 km (0.108 R)
• M9: 3,084,858 km (0.075 R)
• M10: 3,810,407 km (0.105 R)
• M11: 4,115,138 km (0.116 R)
• M12: 4,449,938 km (0.114 R)
• M13: 4,831,862 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.9

Radius: 12.8

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.33 AU - 1.63 AU

Year: 1163 Days

Day: 5.8 Hours

Environment

Temp: -172 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 44,588,410 km

• M1: 159,621 km (0.095 R)
• M2: 780,751 km (0.045 R)
• M3: 1,291,030 km (0.05 R)
• M4: 1,716,486 km (0.051 R)
• M5: 2,454,452 km (0.096 R)
• M6: 2,910,127 km (0.092 R)
• M7: 3,422,201 km (0.082 R)
• M8: 5,612,613 km (0.078 R)
• M9: 6,123,639 km (0.072 R)
• M10: 7,239,191 km (0.073 R)
• M11: 7,893,831 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.3

Radius: 10

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.35 AU - 3.53 AU

Year: 3255 Days

Day: 14.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 44,588,410 km

• M1: 124,465 km (0.088 R)
• M2: 615,745 km (0.109 R)
• M3: 1,270,385 km (0.025 R)
• M4: 2,835,478 km (0.103 R)
• M5: 3,569,704 km (0.086 R)
• M6: 4,226,888 km (0.091 R)
• M7: 4,818,697 km (0.071 R)
• M8: 5,728,102 km (0.102 R)
• M9: 6,338,013 km (0.088 R)
• M10: 6,959,891 km (0.081 R)
• M11: 7,492,609 km (0.105 R)
• M12: 8,188,239 km (0.115 R)
• M13: 11,195,157 km (0.111 R)
• M14: 11,839,475 km (0.083 R)
• M15: 12,921,666 km (0.062 R)
• M16: 13,249,435 km (0.066 R)
• M17: 14,972,204 km (0.079 R)
• M18: 15,967,478 km (0.061 R)
• M19: 18,797,272 km (0.113 R)
• M20: 19,955,010 km (0.113 R)
• M21: 21,095,245 km (0.106 R)
• M22: 22,278,265 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.2

Radius: 12

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 2.64 AU - 3.68 AU

Year: 3627 Days

Day: 10.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 169.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 44,588,410 km

• M1: 149,299 km (0.096 R)
• M2: 535,860 km (0.118 R)
• M3: 1,632,861 km (0.085 R)
• M4: 2,395,810 km (0.093 R)
• M5: 3,173,569 km (0.093 R)
• M6: 3,547,564 km (0.049 R)
• M7: 4,342,677 km (0.105 R)
• M8: 4,920,872 km (0.116 R)
• M9: 5,375,351 km (0.112 R)
• M10: 6,424,780 km (0.095 R)
• M11: 7,668,686 km (0.071 R)
• M12: 8,583,178 km (0.106 R)
• M13: 9,351,512 km (0.093 R)
• M14: 9,826,785 km (0.118 R)
• M15: 10,628,630 km (0.11 R)
• M16: 11,268,310 km (0.112 R)
• M17: 11,891,385 km (0.066 R)
• M18: 12,362,768 km (0.104 R)
• M19: 14,615,862 km (0.108 R)
• M20: 17,402,122 km (0.097 R)
• M21: 17,954,437 km (0.07 R)
• M22: 19,445,479 km (0.097 R)
• M23: 20,100,568 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.9

Radius: 9.8

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.08 AU - 3.78 AU

Year: 4102 Days

Day: 12.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 44,588,410 km

• M1: 121,922 km (0.099 R)
• M2: 474,375 km (0.108 R)
• M3: 1,092,214 km (0.116 R)
• M4: 1,844,392 km (0.032 R)
• M5: 2,253,692 km (0.065 R)
• M6: 2,909,679 km (0.12 R)
• M7: 3,613,836 km (0.053 R)
• M8: 4,385,013 km (0.114 R)
• M9: 4,798,800 km (0.118 R)
• M10: 5,238,319 km (0.089 R)
• M11: 6,636,311 km (0.106 R)
• M12: 8,366,261 km (0.05 R)
• M13: 8,867,414 km (0.071 R)
• M14: 10,684,130 km (0.117 R)
• M15: 13,717,826 km (0.073 R)
• M16: 17,176,379 km (0.088 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.2

Radius: 14.1

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 4.37 AU - 6.35 AU

Year: 8012 Days

Day: 6.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 44,588,410 km

• M1: 175,329 km (0.087 R)
• M2: 965,804 km (0.099 R)
• M3: 1,985,164 km (0.078 R)
• M4: 4,640,227 km (0.032 R)
• M5: 5,396,893 km (0.089 R)
• M6: 7,746,028 km (0.071 R)
• M7: 8,854,249 km (0.113 R)
• M8: 10,293,231 km (0.074 R)
• M9: 16,598,333 km (0.083 R)
• M10: 18,436,142 km (0.099 R)
• M11: 19,616,170 km (0.043 R)
• M12: 20,552,055 km (0.108 R)
• M13: 23,140,696 km (0.088 R)
• M14: 25,094,145 km (0.035 R)
• M15: 26,025,392 km (0.041 R)
• M16: 28,773,804 km (0.104 R)
• M17: 30,076,353 km (0.098 R)
• M18: 30,646,470 km (0.043 R)
• M19: 31,127,128 km (0.097 R)
• M20: 32,301,172 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 653.9

Radius: 10.4

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 5.85 AU - 5.89 AU

Year: 9183 Days

Day: 7.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,588,410 km

• M1: 130,599 km (0.087 R)
• M2: 512,373 km (0.119 R)
• M3: 1,572,573 km (0.101 R)
• M4: 2,051,884 km (0.082 R)
• M5: 2,746,318 km (0.038 R)
• M6: 4,153,734 km (0.065 R)
• M7: 6,344,595 km (0.088 R)
• M8: 7,091,238 km (0.114 R)
• M9: 9,494,378 km (0.109 R)
• M10: 10,320,308 km (0.115 R)
• M11: 10,725,120 km (0.104 R)
• M12: 11,246,170 km (0.096 R)
• M13: 13,145,015 km (0.104 R)
• M14: 13,924,420 km (0.074 R)
• M15: 15,444,185 km (0.114 R)
• M16: 19,339,265 km (0.073 R)
• M17: 23,582,160 km (0.08 R)
• M18: 24,285,718 km (0.104 R)
• M19: 25,093,846 km (0.072 R)
• M20: 26,763,807 km (0.079 R)
• M21: 36,005,814 km (0.104 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 467 - 16,686 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit