🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.59 AU - 0.65 AU

Year: 320 Days

Day: 36 Hours

Environment

Temp: -124 °C

Axial Tilt: 32.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.1

Radius: 8.9

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.93 AU - 1.19 AU

Year: 716 Days

Day: 10.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,090,352 km

• M1: 134,189 km (0.064 R)
• M2: 451,636 km (0.115 R)
• M3: 741,257 km (0.09 R)
• M4: 1,107,623 km (0.099 R)
• M5: 1,891,216 km (0.083 R)
• M6: 2,514,291 km (0.099 R)
• M7: 2,910,277 km (0.101 R)
• M8: 3,223,086 km (0.103 R)
• M9: 4,032,859 km (0.117 R)
• M10: 4,478,811 km (0.112 R)
• M11: 4,867,915 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.4

Radius: 10.3

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.26 AU - 1.34 AU

Year: 972 Days

Day: 8.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 38,090,352 km

• M1: 128,953 km (0.106 R)
• M2: 539,600 km (0.119 R)
• M3: 871,108 km (0.103 R)
• M4: 1,406,370 km (0.117 R)
• M5: 2,068,490 km (0.112 R)
• M6: 2,500,229 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.9

Radius: 13.5

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.26 AU - 1.6 AU

Year: 1122 Days

Day: 11.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,090,352 km

• M1: 168,148 km (0.056 R)
• M2: 759,957 km (0.034 R)
• M3: 1,425,069 km (0.109 R)
• M4: 1,845,439 km (0.094 R)
• M5: 2,462,231 km (0.07 R)
• M6: 3,018,735 km (0.05 R)
• M7: 3,483,835 km (0.1 R)
• M8: 4,576,648 km (0.117 R)
• M9: 5,073,462 km (0.082 R)
• M10: 5,982,120 km (0.087 R)
• M11: 6,680,742 km (0.065 R)
• M12: 7,212,562 km (0.058 R)
• M13: 7,658,214 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.9

Radius: 11

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.42 AU - 1.72 AU

Year: 1291 Days

Day: 5.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 38,090,352 km

• M1: 136,732 km (0.112 R)
• M2: 598,691 km (0.103 R)
• M3: 1,020,706 km (0.072 R)
• M4: 1,439,580 km (0.116 R)
• M5: 1,784,703 km (0.03 R)
• M6: 2,175,751 km (0.086 R)
• M7: 3,243,282 km (0.095 R)
• M8: 3,894,182 km (0.08 R)
• M9: 4,612,701 km (0.115 R)
• M10: 5,241,610 km (0.058 R)
• M11: 5,698,781 km (0.114 R)
• M12: 6,075,020 km (0.064 R)
• M13: 7,232,309 km (0.108 R)
• M14: 8,030,115 km (0.064 R)
• M15: 8,423,856 km (0.12 R)
• M16: 9,364,378 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.3

Radius: 11.4

Gravity: 6.14 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.68 AU - 3.92 AU

Year: 3933 Days

Day: 10 Hours

Environment

Temp: -215 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,090,352 km

• M1: 141,819 km (0.045 R)
• M2: 537,804 km (0.063 R)
• M3: 1,200,373 km (0.082 R)
• M4: 2,094,819 km (0.085 R)
• M5: 2,499,182 km (0.098 R)
• M6: 2,920,300 km (0.063 R)
• M7: 4,696,625 km (0.059 R)
• M8: 5,156,040 km (0.119 R)
• M9: 5,758,172 km (0.104 R)
• M10: 7,606,902 km (0.097 R)
• M11: 9,945,566 km (0.104 R)
• M12: 13,021,896 km (0.111 R)
• M13: 13,624,028 km (0.114 R)
• M14: 15,155,910 km (0.066 R)
• M15: 16,799,542 km (0.093 R)
• M16: 17,273,169 km (0.077 R)
• M17: 19,065,351 km (0.05 R)
• M18: 21,251,874 km (0.102 R)
• M19: 22,086,929 km (0.101 R)
• M20: 23,822,563 km (0.109 R)
• M21: 24,799,737 km (0.104 R)
• M22: 25,336,793 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.4

Radius: 14.4

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 4.11 AU - 6.03 AU

Year: 7489 Days

Day: 5.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,090,352 km

• M1: 179,218 km (0.101 R)
• M2: 1,030,430 km (0.033 R)
• M3: 1,588,131 km (0.057 R)
• M4: 2,863,902 km (0.08 R)
• M5: 5,070,769 km (0.038 R)
• M6: 6,011,890 km (0.087 R)
• M7: 6,914,264 km (0.073 R)
• M8: 7,988,526 km (0.063 R)
• M9: 9,496,174 km (0.059 R)
• M10: 12,495,013 km (0.104 R)
• M11: 15,220,686 km (0.115 R)
• M12: 20,529,914 km (0.039 R)
• M13: 29,506,834 km (0.064 R)
• M14: 32,855,432 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 216.7

Radius: 7.9

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 5.72 AU - 8.62 AU

Year: 12595 Days

Day: 20.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,090,352 km

• M1: 98,286 km (0.092 R)
• M2: 525,238 km (0.088 R)
• M3: 1,343,239 km (0.064 R)
• M4: 1,671,906 km (0.071 R)
• M5: 2,266,258 km (0.097 R)
• M6: 3,401,257 km (0.069 R)
• M7: 5,167,709 km (0.095 R)
• M8: 6,419,245 km (0.067 R)
• M9: 8,806,827 km (0.047 R)
• M10: 12,962,655 km (0.08 R)
• M11: 16,644,558 km (0.086 R)
• M12: 17,442,962 km (0.115 R)
• M13: 18,901,093 km (0.064 R)
• M14: 28,445,736 km (0.102 R)
• M15: 30,167,159 km (0.116 R)
• M16: 31,452,952 km (0.094 R)
• M17: 37,185,842 km (0.117 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 195 - 20,102 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit