🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.55 AU - 0.61 AU

Year: 290 Days

Day: 12.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.62 AU - 0.62 AU

Year: 320 Days

Day: 45.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.9

Radius: 11.5

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.57 AU - 0.79 AU

Year: 368 Days

Day: 9.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 64,950,492 km

• M1: 144,063 km (0.11 R)
• M2: 518,805 km (0.042 R)
• M3: 1,086,230 km (0.087 R)
• M4: 1,599,949 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.1

Radius: 11.3

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.99 AU - 2.01 AU

Year: 1855 Days

Day: 12.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,950,492 km

• M1: 141,669 km (0.109 R)
• M2: 689,347 km (0.045 R)
• M3: 1,113,307 km (0.111 R)
• M4: 1,673,701 km (0.059 R)
• M5: 2,681,243 km (0.1 R)
• M6: 3,751,615 km (0.062 R)
• M7: 4,259,949 km (0.079 R)
• M8: 4,834,405 km (0.085 R)
• M9: 5,437,434 km (0.07 R)
• M10: 6,794,286 km (0.114 R)
• M11: 7,922,554 km (0.119 R)
• M12: 8,516,308 km (0.05 R)
• M13: 9,267,887 km (0.101 R)
• M14: 10,029,041 km (0.107 R)
• M15: 10,831,335 km (0.062 R)
• M16: 11,414,318 km (0.041 R)
• M17: 13,372,105 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 132.6

Radius: 10.7

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.85 AU - 5.91 AU

Year: 7072 Days

Day: 8.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,950,492 km

• M1: 138,528 km (0.097 R)
• M2: 513,121 km (0.109 R)
• M3: 856,597 km (0.09 R)
• M4: 1,391,260 km (0.047 R)
• M5: 2,404,337 km (0.116 R)
• M6: 6,365,389 km (0.114 R)
• M7: 8,504,190 km (0.081 R)
• M8: 10,514,636 km (0.102 R)
• M9: 13,999,219 km (0.088 R)
• M10: 14,489,152 km (0.032 R)
• M11: 15,143,194 km (0.071 R)
• M12: 15,711,816 km (0.058 R)
• M13: 16,134,280 km (0.112 R)
• M14: 17,447,300 km (0.098 R)
• M15: 18,948,665 km (0.096 R)
• M16: 22,009,587 km (0.119 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 190.6

Radius: 5.7

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 6.13 AU - 7.91 AU

Year: 12202 Days

Day: 24.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 64,950,492 km

• M1: 70,909 km (0.034 R)
• M2: 265,237 km (0.077 R)
• M3: 461,061 km (0.034 R)
• M4: 1,206,806 km (0.1 R)
• M5: 1,460,225 km (0.116 R)
• M6: 2,137,754 km (0.038 R)
• M7: 3,234,605 km (0.113 R)
• M8: 3,844,665 km (0.118 R)
• M9: 4,857,144 km (0.106 R)
• M10: 5,260,609 km (0.077 R)
• M11: 5,531,680 km (0.039 R)
• M12: 7,320,721 km (0.102 R)
• M13: 9,158,681 km (0.087 R)
• M14: 9,463,113 km (0.108 R)
• M15: 9,954,990 km (0.106 R)
• M16: 10,369,975 km (0.054 R)
• M17: 10,652,864 km (0.114 R)
• M18: 14,875,863 km (0.104 R)
• M19: 15,601,861 km (0.088 R)
• M20: 17,988,994 km (0.077 R)
• M21: 18,604,440 km (0.073 R)
• M22: 19,163,188 km (0.108 R)
• M23: 22,595,262 km (0.044 R)
• M24: 22,832,375 km (0.118 R)
• M25: 23,716,050 km (0.117 R)
• M26: 25,465,746 km (0.054 R)
• M27: 26,503,357 km (0.077 R)
• M28: 29,033,506 km (0.106 R)
• M29: 30,261,106 km (0.082 R)
• M30: 31,424,529 km (0.069 R)
• M31: 34,672,598 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 329.7

Radius: 6.7

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 8.1 AU - 13.16 AU

Year: 22736 Days

Day: 20.6 Hours

Environment

Temp: -241 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,950,492 km

• M1: 85,420 km (0.081 R)
• M2: 364,271 km (0.079 R)
• M3: 602,281 km (0.111 R)
• M4: 1,072,766 km (0.072 R)
• M5: 1,317,957 km (0.107 R)
• M6: 3,727,680 km (0.097 R)
• M7: 4,360,628 km (0.109 R)
• M8: 4,652,943 km (0.055 R)
• M9: 5,240,713 km (0.107 R)
• M10: 8,688,046 km (0.083 R)
• M11: 9,047,230 km (0.09 R)
• M12: 19,768,162 km (0.027 R)
• M13: 25,317,794 km (0.06 R)
• M14: 26,156,440 km (0.106 R)
• M15: 26,797,616 km (0.075 R)
• M16: 28,446,185 km (0.104 R)
• M17: 37,442,253 km (0.043 R)
• M18: 42,651,400 km (0.107 R)
• M19: 57,833,041 km (0.116 R)
• M20: 60,949,015 km (0.095 R)
• M21: 62,263,980 km (0.109 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 382 - 14,039 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit