🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.44 AU - 0.6 AU

Year: 238 Days

Day: 27.9 Hours

Environment

Temp: -110 °C

Axial Tilt: 16.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.8

Radius: 12.2

Gravity: 6.48 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.72 AU - 0.74 AU

Year: 397 Days

Day: 10.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 20,328,920 km

• M1: 166,054 km (0.112 R)
• M2: 574,905 km (0.112 R)
• M3: 1,023,549 km (0.116 R)
• M4: 1,569,282 km (0.093 R)
• M5: 1,976,487 km (0.115 R)
• M6: 2,426,477 km (0.109 R)
• M7: 2,880,208 km (0.095 R)
• M8: 3,307,310 km (0.101 R)
• M9: 3,974,217 km (0.048 R)
• M10: 4,433,632 km (0.117 R)
• M11: 5,197,479 km (0.066 R)
• M12: 5,645,375 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59

Radius: 14.4

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.59 AU - 0.95 AU

Year: 430 Days

Day: 13.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 20,328,920 km

• M1: 179,069 km (0.098 R)
• M2: 867,817 km (0.087 R)
• M3: 1,541,456 km (0.093 R)
• M4: 2,086,142 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.5

Radius: 10.6

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.65 AU - 0.99 AU

Year: 472 Days

Day: 13.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 20,328,920 km

• M1: 131,796 km (0.042 R)
• M2: 516,561 km (0.046 R)
• M3: 850,464 km (0.117 R)
• M4: 1,207,704 km (0.113 R)
• M5: 1,542,055 km (0.072 R)
• M6: 1,955,394 km (0.042 R)
• M7: 2,368,284 km (0.06 R)
• M8: 2,807,802 km (0.05 R)
• M9: 3,142,004 km (0.103 R)
• M10: 3,969,879 km (0.072 R)
• M11: 4,449,789 km (0.078 R)
• M12: 4,937,328 km (0.091 R)
• M13: 5,476,628 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887.8

Radius: 13.2

Gravity: 5.1 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.91 AU - 1.29 AU

Year: 734 Days

Day: 10.8 Hours

Environment

Temp: -159 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 20,328,920 km

• M1: 165,156 km (0.094 R)
• M2: 619,784 km (0.026 R)
• M3: 1,301,950 km (0.079 R)
• M4: 2,622,600 km (0.098 R)
• M5: 3,493,110 km (0.12 R)
• M6: 4,531,320 km (0.102 R)
• M7: 5,667,964 km (0.102 R)
• M8: 6,419,245 km (0.062 R)
• M9: 7,167,384 km (0.083 R)
• M10: 8,146,053 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.9

Radius: 9.7

Gravity: 8.09 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.95 AU - 3.23 AU

Year: 2650 Days

Day: 9.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 20,328,920 km

• M1: 123,867 km (0.1 R)
• M2: 503,846 km (0.062 R)
• M3: 964,009 km (0.054 R)
• M4: 1,328,429 km (0.096 R)
• M5: 1,773,632 km (0.094 R)
• M6: 3,221,141 km (0.109 R)
• M7: 4,052,307 km (0.041 R)
• M8: 5,408,262 km (0.101 R)
• M9: 6,722,629 km (0.085 R)
• M10: 8,238,355 km (0.086 R)
• M11: 11,553,743 km (0.038 R)
• M12: 12,580,882 km (0.11 R)
• M13: 12,936,476 km (0.075 R)
• M14: 13,298,652 km (0.077 R)
• M15: 15,464,231 km (0.103 R)
• M16: 15,769,710 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 682.2

Radius: 10.3

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 3.33 AU - 3.59 AU

Year: 4092 Days

Day: 5.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 20,328,920 km

• M1: 128,654 km (0.037 R)
• M2: 504,893 km (0.104 R)
• M3: 1,141,881 km (0.112 R)
• M4: 1,685,519 km (0.089 R)
• M5: 2,304,256 km (0.099 R)
• M6: 2,854,028 km (0.111 R)
• M7: 3,235,952 km (0.055 R)
• M8: 4,448,891 km (0.111 R)
• M9: 4,888,858 km (0.097 R)
• M10: 6,000,221 km (0.106 R)
• M11: 7,140,755 km (0.076 R)
• M12: 7,506,223 km (0.111 R)
• M13: 8,060,333 km (0.091 R)
• M14: 8,942,213 km (0.098 R)
• M15: 9,367,370 km (0.088 R)
• M16: 10,051,032 km (0.083 R)
• M17: 13,621,485 km (0.031 R)
• M18: 19,396,411 km (0.106 R)
• M19: 24,091,091 km (0.096 R)
• M20: 25,450,039 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 29.1

Radius: 7.7

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 6.1 AU - 9.16 AU

Year: 13400 Days

Day: 21.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 20,328,920 km

• M1: 95,892 km (0.1 R)
• M2: 419,622 km (0.113 R)
• M3: 728,093 km (0.094 R)
• M4: 978,220 km (0.085 R)
• M5: 1,259,464 km (0.062 R)
• M6: 2,549,746 km (0.082 R)
• M7: 3,962,399 km (0.08 R)
• M8: 4,941,218 km (0.088 R)
• M9: 5,449,701 km (0.045 R)
• M10: 5,965,813 km (0.047 R)
• M11: 6,946,876 km (0.099 R)
• M12: 9,225,252 km (0.096 R)
• M13: 9,771,434 km (0.116 R)
• M14: 10,262,115 km (0.075 R)
• M15: 10,888,331 km (0.109 R)
• M16: 12,045,321 km (0.058 R)
• M17: 12,565,324 km (0.107 R)
• M18: 17,607,969 km (0.088 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 382 - 18,171 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit