🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.54 AU - 0.68 AU

Year: 313 Days

Day: 19.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,833,958 km

• M1: 359,783 km (0.047 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.57 AU - 0.77 AU

Year: 360 Days

Day: 47.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 45.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,833,958 km

• M1: 28,274 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.4

Radius: 14.7

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.67 AU - 0.83 AU

Year: 426 Days

Day: 7 Hours

Environment

Temp: -145 °C

Axial Tilt: 83.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 66,833,958 km

• M1: 182,809 km (0.061 R)
• M2: 648,956 km (0.088 R)
• M3: 1,191,248 km (0.081 R)
• M4: 1,745,957 km (0.11 R)
• M5: 2,762,175 km (0.093 R)
• M6: 3,344,410 km (0.086 R)
• M7: 4,745,843 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 465.3

Radius: 14.7

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.79 AU - 1.07 AU

Year: 588 Days

Day: 11.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 66,833,958 km

• M1: 182,809 km (0.115 R)
• M2: 699,520 km (0.108 R)
• M3: 1,224,159 km (0.11 R)
• M4: 1,844,093 km (0.064 R)
• M5: 2,417,502 km (0.093 R)
• M6: 3,177,608 km (0.111 R)
• M7: 3,722,743 km (0.062 R)
• M8: 4,358,833 km (0.095 R)
• M9: 4,878,985 km (0.071 R)
• M10: 5,609,023 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.7

Radius: 10.7

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 2.93 AU - 4.73 AU

Year: 4917 Days

Day: 7.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,833,958 km

• M1: 133,142 km (0.085 R)
• M2: 515,813 km (0.095 R)
• M3: 1,116,898 km (0.05 R)
• M4: 1,621,043 km (0.116 R)
• M5: 2,103,645 km (0.054 R)
• M6: 2,746,617 km (0.095 R)
• M7: 5,830,427 km (0.113 R)
• M8: 7,098,419 km (0.101 R)
• M9: 7,462,241 km (0.07 R)
• M10: 7,948,284 km (0.108 R)
• M11: 10,204,968 km (0.109 R)
• M12: 10,872,474 km (0.063 R)
• M13: 12,110,546 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.4

Radius: 14.9

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 3.52 AU - 4.36 AU

Year: 5130 Days

Day: 14.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 72 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 66,833,958 km

• M1: 191,336 km (0.078 R)
• M2: 724,054 km (0.101 R)
• M3: 1,625,979 km (0.11 R)
• M4: 2,489,009 km (0.099 R)
• M5: 3,072,441 km (0.111 R)
• M6: 4,212,078 km (0.034 R)
• M7: 4,715,774 km (0.114 R)
• M8: 5,233,083 km (0.118 R)
• M9: 5,904,179 km (0.104 R)
• M10: 6,475,643 km (0.068 R)
• M11: 7,317,580 km (0.111 R)
• M12: 9,141,627 km (0.056 R)
• M13: 10,939,195 km (0.042 R)
• M14: 11,434,663 km (0.108 R)
• M15: 13,314,061 km (0.063 R)
• M16: 14,622,593 km (0.092 R)
• M17: 19,063,406 km (0.081 R)
• M18: 26,125,623 km (0.097 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.6

Radius: 14.9

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 5.19 AU - 5.69 AU

Year: 8324 Days

Day: 5.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 66,833,958 km

• M1: 185,352 km (0.102 R)
• M2: 838,346 km (0.105 R)
• M3: 1,519,466 km (0.11 R)
• M4: 2,056,821 km (0.11 R)
• M5: 2,852,383 km (0.06 R)
• M6: 3,572,547 km (0.109 R)
• M7: 4,134,586 km (0.075 R)
• M8: 4,783,093 km (0.107 R)
• M9: 5,350,069 km (0.105 R)
• M10: 6,451,109 km (0.058 R)
• M11: 7,002,676 km (0.067 R)
• M12: 8,122,267 km (0.106 R)
• M13: 8,891,200 km (0.109 R)
• M14: 10,021,711 km (0.037 R)
• M15: 11,246,020 km (0.075 R)
• M16: 14,392,063 km (0.026 R)
• M17: 15,825,660 km (0.096 R)
• M18: 16,704,846 km (0.105 R)
• M19: 18,016,969 km (0.099 R)
• M20: 23,474,299 km (0.1 R)
• M21: 27,730,060 km (0.101 R)
• M22: 29,193,875 km (0.089 R)
• M23: 31,095,413 km (0.053 R)
• M24: 33,383,064 km (0.065 R)
• M25: 34,934,095 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 922.5

Radius: 3.4

Gravity: 79.8 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 5.93 AU - 7.97 AU

Year: 12020 Days

Day: 23.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 66,833,958 km

• M1: 85,869 km (0.082 R)
• M2: 296,503 km (0.027 R)
• M3: 420,819 km (0.082 R)
• M4: 779,405 km (0.088 R)
• M5: 2,057,270 km (0.059 R)
• M6: 2,171,712 km (0.113 R)
• M7: 3,095,778 km (0.074 R)
• M8: 3,349,347 km (0.12 R)
• M9: 8,305,524 km (0.105 R)
• M10: 8,645,710 km (0.084 R)
• M11: 8,944,606 km (0.028 R)
• M12: 9,458,026 km (0.116 R)
• M13: 10,209,606 km (0.087 R)
• M14: 12,893,840 km (0.098 R)
• M15: 13,883,730 km (0.071 R)
• M16: 18,678,790 km (0.075 R)
• M17: 19,430,819 km (0.119 R)
• M18: 21,991,336 km (0.119 R)
• M19: 24,077,328 km (0.08 R)
• M20: 25,879,235 km (0.103 R)
• M21: 28,637,670 km (0.072 R)
• M22: 32,412,772 km (0.108 R)
• M23: 33,863,722 km (0.115 R)
• M24: 36,506,219 km (0.086 R)
• M25: 50,665,508 km (0.118 R)
• M26: 57,711,867 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 610

Radius: 6.5

Gravity: 14.44 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 7.74 AU - 10.08 AU

Year: 17447 Days

Day: 15 Hours

Environment

Temp: -226 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 66,833,958 km

• M1: 80,932 km (0.059 R)
• M2: 538,702 km (0.091 R)
• M3: 821,143 km (0.11 R)
• M4: 1,365,829 km (0.094 R)
• M5: 1,609,972 km (0.087 R)
• M6: 3,067,355 km (0.09 R)
• M7: 4,956,177 km (0.099 R)
• M8: 5,425,316 km (0.094 R)
• M9: 5,651,658 km (0.057 R)
• M10: 6,368,681 km (0.12 R)
• M11: 6,620,753 km (0.079 R)
• M12: 7,011,353 km (0.086 R)
• M13: 7,982,393 km (0.103 R)
• M14: 10,188,513 km (0.038 R)
• M15: 10,533,784 km (0.101 R)
• M16: 15,913,174 km (0.08 R)
• M17: 23,075,472 km (0.03 R)
• M18: 23,471,308 km (0.102 R)
• M19: 29,615,741 km (0.106 R)
• M20: 32,003,024 km (0.112 R)
• M21: 35,033,278 km (0.098 R)
• M22: 36,084,353 km (0.109 R)
• M23: 36,483,929 km (0.089 R)
• M24: 37,021,135 km (0.055 R)
• M25: 37,291,757 km (0.086 R)
• M26: 45,416,268 km (0.089 R)
• M27: 51,722,417 km (0.08 R)
• M28: 58,955,324 km (0.086 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 312 - 12,510 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit