🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.58 AU - 0.6 AU

Year: 293 Days

Day: 33.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,432,259 km

• M1: 165,455 km (0.1 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 896.3

Radius: 11.3

Gravity: 7.02 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.97 AU - 0.99 AU

Year: 626 Days

Day: 13.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,432,259 km

• M1: 140,622 km (0.1 R)
• M2: 492,027 km (0.103 R)
• M3: 871,408 km (0.105 R)
• M4: 1,283,400 km (0.079 R)
• M5: 1,742,965 km (0.03 R)
• M6: 2,115,463 km (0.114 R)
• M7: 2,707,721 km (0.05 R)
• M8: 3,136,768 km (0.079 R)
• M9: 3,968,383 km (0.101 R)
• M10: 4,396,681 km (0.076 R)
• M11: 5,948,460 km (0.078 R)
• M12: 8,003,785 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.4

Radius: 14.9

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.4 AU - 1.72 AU

Year: 1258 Days

Day: 13.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,432,259 km

• M1: 186,100 km (0.076 R)
• M2: 786,137 km (0.114 R)
• M3: 1,355,357 km (0.088 R)
• M4: 1,830,629 km (0.052 R)
• M5: 2,451,760 km (0.087 R)
• M6: 3,212,315 km (0.092 R)
• M7: 6,117,955 km (0.108 R)
• M8: 7,762,185 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.1

Radius: 8.5

Gravity: 7.13 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 4.15 AU - 6.31 AU

Year: 7723 Days

Day: 9.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 71,432,259 km

• M1: 109,057 km (0.085 R)
• M2: 402,867 km (0.117 R)
• M3: 719,416 km (0.038 R)
• M4: 1,133,503 km (0.08 R)
• M5: 2,326,247 km (0.072 R)
• M6: 2,855,075 km (0.065 R)
• M7: 4,202,354 km (0.113 R)
• M8: 4,624,070 km (0.101 R)
• M9: 5,770,887 km (0.118 R)
• M10: 6,564,953 km (0.112 R)
• M11: 7,850,896 km (0.082 R)
• M12: 9,037,357 km (0.114 R)
• M13: 11,059,621 km (0.054 R)
• M14: 13,478,170 km (0.102 R)
• M15: 14,104,835 km (0.119 R)
• M16: 16,484,339 km (0.111 R)
• M17: 17,333,606 km (0.102 R)
• M18: 19,404,340 km (0.104 R)
• M19: 20,129,740 km (0.088 R)
• M20: 20,573,597 km (0.119 R)
• M21: 21,251,724 km (0.073 R)
• M22: 22,731,845 km (0.119 R)
• M23: 23,213,251 km (0.047 R)
• M24: 24,362,911 km (0.11 R)
• M25: 24,698,309 km (0.076 R)
• M26: 28,223,284 km (0.112 R)
• M27: 30,298,356 km (0.103 R)
• M28: 32,473,060 km (0.085 R)
• M29: 34,328,074 km (0.099 R)
• M30: 35,174,648 km (0.083 R)
• M31: 35,603,246 km (0.039 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 930.1

Radius: 6.1

Gravity: 25 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 5.43 AU - 8.91 AU

Year: 12396 Days

Day: 18.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 71,432,259 km

• M1: 81,830 km (0.089 R)
• M2: 626,366 km (0.119 R)
• M3: 1,008,888 km (0.114 R)
• M4: 2,195,349 km (0.085 R)
• M5: 3,621,615 km (0.031 R)
• M6: 4,020,443 km (0.083 R)
• M7: 4,805,233 km (0.101 R)
• M8: 7,317,131 km (0.113 R)
• M9: 7,814,843 km (0.078 R)
• M10: 10,365,188 km (0.067 R)
• M11: 11,168,079 km (0.04 R)
• M12: 12,576,095 km (0.07 R)
• M13: 17,345,424 km (0.057 R)
• M14: 19,652,523 km (0.051 R)
• M15: 22,814,124 km (0.092 R)
• M16: 24,764,880 km (0.108 R)
• M17: 31,397,302 km (0.101 R)
• M18: 34,052,963 km (0.108 R)
• M19: 34,301,595 km (0.093 R)
• M20: 42,479,213 km (0.068 R)
• M21: 42,767,338 km (0.114 R)
• M22: 44,523,617 km (0.109 R)
• M23: 48,335,820 km (0.026 R)
• M24: 48,649,826 km (0.084 R)
• M25: 50,562,884 km (0.083 R)
• M26: 56,950,713 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 516.5

Radius: 5.2

Gravity: 19.1 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 9.61 AU - 9.67 AU

Year: 19326 Days

Day: 20.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 71,432,259 km

• M1: 64,776 km (0.054 R)
• M2: 279,449 km (0.104 R)
• M3: 581,637 km (0.087 R)
• M4: 794,514 km (0.101 R)
• M5: 1,159,832 km (0.08 R)
• M6: 1,613,712 km (0.097 R)
• M7: 2,652,819 km (0.049 R)
• M8: 4,045,276 km (0.084 R)
• M9: 5,074,809 km (0.103 R)
• M10: 5,825,191 km (0.095 R)
• M11: 8,216,962 km (0.073 R)
• M12: 9,738,672 km (0.046 R)
• M13: 10,595,120 km (0.063 R)
• M14: 15,717,949 km (0.037 R)
• M15: 18,042,251 km (0.037 R)
• M16: 20,677,866 km (0.111 R)
• M17: 23,459,040 km (0.118 R)
• M18: 24,064,014 km (0.106 R)
• M19: 25,941,318 km (0.088 R)
• M20: 30,817,012 km (0.063 R)
• M21: 31,664,484 km (0.047 R)
• M22: 37,623,715 km (0.087 R)
• M23: 43,377,847 km (0.08 R)
• M24: 47,416,541 km (0.112 R)
• M25: 49,362,361 km (0.111 R)
• M26: 53,412,274 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 601.4

Radius: 5.3

Gravity: 21.41 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 8.45 AU - 10.89 AU

Year: 19416 Days

Day: 20.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,432,259 km

• M1: 87,365 km (0.104 R)
• M2: 279,000 km (0.092 R)
• M3: 496,216 km (0.108 R)
• M4: 1,582,745 km (0.094 R)
• M5: 2,846,249 km (0.088 R)
• M6: 3,395,572 km (0.062 R)
• M7: 7,860,171 km (0.035 R)
• M8: 14,648,623 km (0.102 R)
• M9: 15,404,093 km (0.057 R)
• M10: 19,484,524 km (0.102 R)
• M11: 25,716,772 km (0.038 R)
• M12: 28,985,335 km (0.111 R)
• M13: 39,703,724 km (0.106 R)
• M14: 45,617,477 km (0.112 R)
• M15: 51,745,903 km (0.094 R)
• M16: 59,152,644 km (0.079 R)
• M17: 67,235,417 km (0.104 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: 299 - 12,889 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit