🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.46 AU - 0.66 AU

Year: 271 Days

Day: 21.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 24.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,362,868 km

• M1: 29,620 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.8

Radius: 13.9

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.94 AU - 1 AU

Year: 617 Days

Day: 10.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,362,868 km

• M1: 172,935 km (0.078 R)
• M2: 731,085 km (0.11 R)
• M3: 1,182,422 km (0.107 R)
• M4: 1,622,987 km (0.074 R)
• M5: 2,459,239 km (0.055 R)
• M6: 3,010,956 km (0.1 R)
• M7: 3,776,748 km (0.074 R)
• M8: 4,249,926 km (0.037 R)
• M9: 4,857,592 km (0.065 R)
• M10: 5,823,396 km (0.119 R)
• M11: 6,497,036 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.3

Radius: 10.8

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.44 AU - 1.9 AU

Year: 1393 Days

Day: 6.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,362,868 km

• M1: 136,583 km (0.112 R)
• M2: 518,955 km (0.1 R)
• M3: 1,105,528 km (0.066 R)
• M4: 1,511,686 km (0.115 R)
• M5: 2,265,510 km (0.093 R)
• M6: 2,653,268 km (0.108 R)
• M7: 3,085,306 km (0.108 R)
• M8: 3,906,449 km (0.108 R)
• M9: 4,521,895 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.3

Radius: 15

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.08 AU - 2.62 AU

Year: 2326 Days

Day: 12.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 45,362,868 km

• M1: 186,549 km (0.084 R)
• M2: 733,927 km (0.119 R)
• M3: 1,213,388 km (0.115 R)
• M4: 1,978,432 km (0.097 R)
• M5: 2,734,499 km (0.058 R)
• M6: 3,204,686 km (0.053 R)
• M7: 3,764,032 km (0.068 R)
• M8: 4,870,757 km (0.027 R)
• M9: 6,560,764 km (0.057 R)
• M10: 7,414,370 km (0.104 R)
• M11: 8,191,231 km (0.111 R)
• M12: 10,078,409 km (0.061 R)
• M13: 10,743,820 km (0.114 R)
• M14: 11,289,852 km (0.099 R)
• M15: 11,931,029 km (0.027 R)
• M16: 12,837,143 km (0.103 R)
• M17: 13,535,915 km (0.047 R)
• M18: 14,130,416 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.5

Radius: 8.5

Gravity: 8.99 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 2.6 AU - 4.02 AU

Year: 3888 Days

Day: 11.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 55.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 45,362,868 km

• M1: 105,766 km (0.084 R)
• M2: 382,671 km (0.037 R)
• M3: 800,648 km (0.101 R)
• M4: 1,078,900 km (0.086 R)
• M5: 1,621,940 km (0.077 R)
• M6: 1,996,384 km (0.097 R)
• M7: 2,851,186 km (0.085 R)
• M8: 3,478,150 km (0.109 R)
• M9: 4,149,546 km (0.066 R)
• M10: 4,539,847 km (0.102 R)
• M11: 4,805,383 km (0.102 R)
• M12: 5,637,446 km (0.104 R)
• M13: 6,966,025 km (0.046 R)
• M14: 7,960,402 km (0.083 R)
• M15: 9,546,588 km (0.055 R)
• M16: 11,201,889 km (0.094 R)
• M17: 11,688,830 km (0.049 R)
• M18: 12,005,828 km (0.116 R)
• M19: 13,381,380 km (0.082 R)
• M20: 17,894,897 km (0.052 R)
• M21: 20,005,125 km (0.062 R)
• M22: 21,455,775 km (0.118 R)
• M23: 22,414,698 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.1

Radius: 9.5

Gravity: 10.05 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 3.18 AU - 4.38 AU

Year: 4745 Days

Day: 11.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,362,868 km

• M1: 118,182 km (0.107 R)
• M2: 439,668 km (0.102 R)
• M3: 953,986 km (0.117 R)
• M4: 1,545,496 km (0.1 R)
• M5: 2,300,965 km (0.113 R)
• M6: 2,672,566 km (0.103 R)
• M7: 3,163,247 km (0.105 R)
• M8: 3,825,966 km (0.073 R)
• M9: 4,761,251 km (0.119 R)
• M10: 9,290,626 km (0.115 R)
• M11: 11,488,967 km (0.054 R)
• M12: 13,903,477 km (0.079 R)
• M13: 15,908,088 km (0.053 R)
• M14: 18,229,099 km (0.065 R)
• M15: 25,451,086 km (0.097 R)
• M16: 31,927,028 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.3

Radius: 8.7

Gravity: 8.33 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 3.85 AU - 4.67 AU

Year: 5677 Days

Day: 5.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 45,362,868 km

• M1: 108,608 km (0.062 R)
• M2: 485,744 km (0.11 R)
• M3: 861,235 km (0.117 R)
• M4: 1,439,281 km (0.078 R)
• M5: 2,208,813 km (0.093 R)
• M6: 2,502,324 km (0.056 R)
• M7: 2,803,464 km (0.101 R)
• M8: 3,148,736 km (0.09 R)
• M9: 4,334,000 km (0.068 R)
• M10: 4,904,865 km (0.077 R)
• M11: 5,466,306 km (0.065 R)
• M12: 6,038,967 km (0.097 R)
• M13: 6,584,550 km (0.098 R)
• M14: 7,848,353 km (0.114 R)
• M15: 8,656,481 km (0.115 R)
• M16: 11,703,789 km (0.102 R)
• M17: 13,280,701 km (0.103 R)
• M18: 14,203,121 km (0.079 R)
• M19: 14,822,456 km (0.119 R)
• M20: 15,814,739 km (0.109 R)
• M21: 17,417,082 km (0.076 R)
• M22: 17,801,698 km (0.116 R)
• M23: 18,989,804 km (0.086 R)
• M24: 21,230,930 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 123.1

Radius: 6.4

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 8.68 AU - 12.16 AU

Year: 21718 Days

Day: 22.1 Hours

Environment

Temp: -233 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 45,362,868 km

• M1: 80,184 km (0.09 R)
• M2: 298,149 km (0.085 R)
• M3: 575,054 km (0.09 R)
• M4: 857,196 km (0.117 R)
• M5: 1,377,048 km (0.116 R)
• M6: 1,706,912 km (0.081 R)
• M7: 3,292,799 km (0.115 R)
• M8: 3,629,992 km (0.074 R)
• M9: 4,097,037 km (0.088 R)
• M10: 4,662,068 km (0.113 R)
• M11: 4,932,691 km (0.106 R)
• M12: 5,150,355 km (0.09 R)
• M13: 5,374,603 km (0.107 R)
• M14: 5,842,545 km (0.066 R)
• M15: 7,820,977 km (0.059 R)
• M16: 9,145,367 km (0.046 R)
• M17: 9,522,353 km (0.082 R)
• M18: 10,924,235 km (0.036 R)
• M19: 11,784,123 km (0.09 R)
• M20: 12,630,698 km (0.101 R)
• M21: 14,006,250 km (0.041 R)
• M22: 14,380,993 km (0.052 R)
• M23: 15,678,455 km (0.083 R)
• M24: 18,653,508 km (0.116 R)
• M25: 22,490,843 km (0.072 R)
• M26: 44,686,978 km (0.077 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: 189 - 17,171 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit