🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.1

Radius: 10.3

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.56 AU - 0.8 AU

Year: 368 Days

Day: 13.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,348,941 km

• M1: 130,898 km (0.043 R)
• M2: 453,282 km (0.046 R)
• M3: 1,006,943 km (0.061 R)
• M4: 1,407,866 km (0.095 R)
• M5: 2,017,178 km (0.088 R)
• M6: 2,379,354 km (0.093 R)
• M7: 3,970,477 km (0.051 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90

Radius: 11.6

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.67 AU - 0.89 AU

Year: 452 Days

Day: 6.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 57,348,941 km

• M1: 146,606 km (0.05 R)
• M2: 523,892 km (0.071 R)
• M3: 1,079,199 km (0.051 R)
• M4: 1,443,171 km (0.09 R)
• M5: 1,903,633 km (0.086 R)
• M6: 2,300,067 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 664.1

Radius: 14.4

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.8 AU - 0.84 AU

Year: 487 Days

Day: 9.1 Hours

Environment

Temp: -155 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,348,941 km

• M1: 179,667 km (0.057 R)
• M2: 893,548 km (0.106 R)
• M3: 1,567,786 km (0.092 R)
• M4: 2,216,592 km (0.063 R)
• M5: 2,856,871 km (0.109 R)
• M6: 3,362,661 km (0.12 R)
• M7: 4,130,846 km (0.083 R)
• M8: 4,586,970 km (0.054 R)
• M9: 5,124,625 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.8

Radius: 14.9

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.64 AU - 1.04 AU

Year: 505 Days

Day: 13.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,348,941 km

• M1: 185,352 km (0.102 R)
• M2: 710,440 km (0.05 R)
• M3: 1,190,649 km (0.101 R)
• M4: 1,834,519 km (0.113 R)
• M5: 2,343,750 km (0.091 R)
• M6: 3,180,451 km (0.045 R)
• M7: 4,356,290 km (0.089 R)
• M8: 5,279,010 km (0.06 R)
• M9: 5,878,299 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.1

Radius: 13.1

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.3 AU - 1.88 AU

Year: 1315 Days

Day: 5.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 57,348,941 km

• M1: 164,408 km (0.099 R)
• M2: 719,566 km (0.082 R)
• M3: 1,173,745 km (0.104 R)
• M4: 1,756,877 km (0.044 R)
• M5: 2,346,891 km (0.098 R)
• M6: 4,191,732 km (0.094 R)
• M7: 4,869,261 km (0.054 R)
• M8: 5,575,213 km (0.114 R)
• M9: 6,044,652 km (0.108 R)
• M10: 6,589,038 km (0.105 R)
• M11: 10,472,749 km (0.06 R)
• M12: 12,991,977 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.7

Radius: 10.1

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.23 AU - 2.75 AU

Year: 2578 Days

Day: 10.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,348,941 km

• M1: 125,812 km (0.089 R)
• M2: 476,619 km (0.098 R)
• M3: 1,399,937 km (0.037 R)
• M4: 4,309,615 km (0.083 R)
• M5: 6,574,677 km (0.106 R)
• M6: 7,546,016 km (0.115 R)
• M7: 8,244,787 km (0.042 R)
• M8: 10,354,865 km (0.1 R)
• M9: 11,291,946 km (0.118 R)
• M10: 11,819,279 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362

Radius: 8.6

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.88 AU - 2.9 AU

Year: 3223 Days

Day: 12.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 57,348,941 km

• M1: 106,962 km (0.077 R)
• M2: 625,917 km (0.076 R)
• M3: 1,164,769 km (0.085 R)
• M4: 1,577,210 km (0.058 R)
• M5: 2,160,193 km (0.038 R)
• M6: 2,566,202 km (0.066 R)
• M7: 2,833,832 km (0.06 R)
• M8: 3,496,252 km (0.085 R)
• M9: 4,570,963 km (0.114 R)
• M10: 4,899,031 km (0.11 R)
• M11: 6,698,843 km (0.082 R)
• M12: 6,979,788 km (0.11 R)
• M13: 7,475,406 km (0.043 R)
• M14: 9,414,044 km (0.047 R)
• M15: 11,666,240 km (0.076 R)
• M16: 12,702,654 km (0.066 R)
• M17: 13,003,496 km (0.071 R)
• M18: 13,619,689 km (0.104 R)
• M19: 14,815,276 km (0.078 R)
• M20: 15,438,799 km (0.108 R)
• M21: 17,151,994 km (0.079 R)
• M22: 17,839,396 km (0.075 R)

Asteroid Belt

Center: 3.81 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 263.5

Radius: 13

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 3.86 AU - 5.58 AU

Year: 6727 Days

Day: 14.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,348,941 km

• M1: 161,715 km (0.094 R)
• M2: 673,789 km (0.118 R)
• M3: 1,413,251 km (0.111 R)
• M4: 2,189,365 km (0.086 R)
• M5: 2,819,172 km (0.113 R)
• M6: 4,350,456 km (0.095 R)
• M7: 6,410,119 km (0.088 R)
• M8: 10,467,812 km (0.075 R)
• M9: 11,384,398 km (0.086 R)
• M10: 11,931,777 km (0.118 R)
• M11: 12,785,681 km (0.112 R)
• M12: 18,352,068 km (0.09 R)
• M13: 19,619,162 km (0.048 R)
• M14: 21,352,702 km (0.112 R)
• M15: 23,844,853 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 354.7

Radius: 5.5

Gravity: 11.73 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 7.12 AU - 11.2 AU

Year: 18187 Days

Day: 18.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,348,941 km

• M1: 68,665 km (0.11 R)
• M2: 321,037 km (0.111 R)
• M3: 499,657 km (0.064 R)
• M4: 793,018 km (0.109 R)
• M5: 1,052,122 km (0.116 R)
• M6: 1,758,373 km (0.106 R)
• M7: 1,963,023 km (0.045 R)
• M8: 2,969,817 km (0.065 R)
• M9: 4,251,871 km (0.109 R)
• M10: 5,116,098 km (0.097 R)
• M11: 5,716,883 km (0.118 R)
• M12: 8,404,558 km (0.111 R)
• M13: 9,494,827 km (0.069 R)
• M14: 9,913,701 km (0.081 R)
• M15: 10,127,776 km (0.114 R)
• M16: 12,134,182 km (0.077 R)
• M17: 12,317,739 km (0.099 R)
• M18: 12,565,174 km (0.08 R)
• M19: 12,752,919 km (0.107 R)
• M20: 15,510,457 km (0.109 R)
• M21: 16,312,750 km (0.072 R)
• M22: 17,999,915 km (0.09 R)
• M23: 22,719,877 km (0.113 R)
• M24: 25,712,732 km (0.11 R)
• M25: 26,320,848 km (0.072 R)
• M26: 33,656,379 km (0.073 R)
• M27: 34,506,095 km (0.05 R)
• M28: 35,744,766 km (0.095 R)
• M29: 35,996,090 km (0.059 R)
• M30: 42,807,879 km (0.084 R)
• M31: 50,115,735 km (0.099 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 547 - 16,976 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit