🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.54 AU - 0.66 AU

Year: 305 Days

Day: 31.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 100 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,512,531 km

• M1: 241,601 km (0.08 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 836.5

Radius: 14.5

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.8 AU - 0.9 AU

Year: 514 Days

Day: 7.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,512,531 km

• M1: 181,013 km (0.101 R)
• M2: 632,201 km (0.094 R)
• M3: 1,458,729 km (0.107 R)
• M4: 2,067,443 km (0.068 R)
• M5: 2,527,905 km (0.031 R)
• M6: 3,034,742 km (0.091 R)
• M7: 3,662,006 km (0.051 R)
• M8: 4,257,256 km (0.082 R)
• M9: 4,868,663 km (0.035 R)
• M10: 6,637,807 km (0.04 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.5

Radius: 11.7

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.05 AU - 1.15 AU

Year: 757 Days

Day: 10.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,512,531 km

• M1: 147,204 km (0.075 R)
• M2: 561,441 km (0.095 R)
• M3: 1,124,078 km (0.118 R)
• M4: 1,971,251 km (0.09 R)
• M5: 2,435,603 km (0.083 R)
• M6: 4,330,110 km (0.081 R)
• M7: 5,424,269 km (0.093 R)
• M8: 6,655,160 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.9

Radius: 10.2

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.94 AU - 1.98 AU

Year: 1800 Days

Day: 5.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 121.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,512,531 km

• M1: 129,402 km (0.064 R)
• M2: 467,194 km (0.113 R)
• M3: 1,023,549 km (0.103 R)
• M4: 1,440,029 km (0.116 R)
• M5: 2,903,994 km (0.095 R)
• M6: 3,704,043 km (0.049 R)
• M7: 4,164,805 km (0.082 R)
• M8: 4,493,022 km (0.112 R)
• M9: 5,201,967 km (0.073 R)
• M10: 6,767,359 km (0.112 R)
• M11: 8,596,193 km (0.041 R)
• M12: 9,593,412 km (0.111 R)
• M13: 10,267,051 km (0.105 R)
• M14: 10,869,332 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469

Radius: 9.1

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 2.59 AU - 3.35 AU

Year: 3358 Days

Day: 7.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,512,531 km

• M1: 113,246 km (0.104 R)
• M2: 482,453 km (0.077 R)
• M3: 932,144 km (0.105 R)
• M4: 2,821,266 km (0.106 R)
• M5: 3,117,620 km (0.066 R)
• M6: 3,508,369 km (0.108 R)
• M7: 4,302,734 km (0.112 R)
• M8: 4,629,905 km (0.085 R)
• M9: 6,551,340 km (0.06 R)
• M10: 7,104,552 km (0.095 R)
• M11: 8,073,647 km (0.038 R)
• M12: 9,093,157 km (0.108 R)
• M13: 11,100,162 km (0.102 R)
• M14: 12,014,205 km (0.108 R)
• M15: 12,665,554 km (0.106 R)
• M16: 13,248,986 km (0.041 R)
• M17: 14,517,875 km (0.089 R)
• M18: 16,756,308 km (0.081 R)
• M19: 17,624,574 km (0.064 R)
• M20: 20,045,965 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.3

Radius: 14

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 4.18 AU - 4.5 AU

Year: 5931 Days

Day: 7.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,512,531 km

• M1: 174,282 km (0.116 R)
• M2: 659,128 km (0.06 R)
• M3: 1,121,535 km (0.057 R)
• M4: 1,770,042 km (0.119 R)
• M5: 2,215,096 km (0.092 R)
• M6: 2,811,842 km (0.111 R)
• M7: 3,404,249 km (0.1 R)
• M8: 4,154,183 km (0.098 R)
• M9: 4,623,023 km (0.064 R)
• M10: 5,156,339 km (0.081 R)
• M11: 7,562,472 km (0.115 R)
• M12: 10,929,321 km (0.117 R)
• M13: 11,625,101 km (0.053 R)
• M14: 12,244,885 km (0.104 R)
• M15: 20,299,533 km (0.113 R)
• M16: 23,729,364 km (0.1 R)
• M17: 24,728,079 km (0.085 R)
• M18: 26,809,285 km (0.064 R)
• M19: 28,630,938 km (0.089 R)
• M20: 29,954,281 km (0.096 R)
• M21: 31,915,060 km (0.095 R)
• M22: 35,228,204 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 223.1

Radius: 3.7

Gravity: 16.3 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 7.27 AU - 8.77 AU

Year: 14899 Days

Day: 19.9 Hours

Environment

Temp: -234 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 56,512,531 km

• M1: 47,423 km (0.073 R)
• M2: 260,899 km (0.108 R)
• M3: 410,796 km (0.042 R)
• M4: 677,978 km (0.106 R)
• M5: 949,498 km (0.04 R)
• M6: 1,289,534 km (0.115 R)
• M7: 1,467,406 km (0.108 R)
• M8: 1,647,222 km (0.086 R)
• M9: 2,051,136 km (0.038 R)
• M10: 2,294,233 km (0.043 R)
• M11: 2,422,887 km (0.056 R)
• M12: 3,391,833 km (0.118 R)
• M13: 4,014,608 km (0.108 R)
• M14: 4,256,359 km (0.12 R)
• M15: 4,564,979 km (0.064 R)
• M16: 5,746,802 km (0.08 R)
• M17: 6,019,220 km (0.078 R)
• M18: 6,264,710 km (0.1 R)
• M19: 6,626,886 km (0.088 R)
• M20: 7,432,621 km (0.1 R)
• M21: 7,921,207 km (0.105 R)
• M22: 8,173,429 km (0.108 R)
• M23: 8,872,201 km (0.081 R)
• M24: 10,487,708 km (0.089 R)
• M25: 13,380,782 km (0.081 R)
• M26: 15,688,777 km (0.096 R)
• M27: 16,764,087 km (0.067 R)
• M28: 17,390,154 km (0.12 R)
• M29: 18,394,704 km (0.113 R)
• M30: 18,614,912 km (0.12 R)
• M31: 19,972,961 km (0.088 R)
• M32: 20,127,945 km (0.1 R)
• M33: 23,224,920 km (0.068 R)
• M34: 24,796,745 km (0.115 R)
• M35: 28,150,729 km (0.091 R)
• M36: 29,935,581 km (0.116 R)
• M37: 30,546,988 km (0.053 R)
• M38: 31,794,634 km (0.103 R)
• M39: 37,008,419 km (0.078 R)
• M40: 40,246,914 km (0.102 R)
• M41: 41,618,726 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 259.3

Radius: 5.5

Gravity: 8.57 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 8.58 AU - 11.46 AU

Year: 20807 Days

Day: 23.8 Hours

Environment

Temp: -239 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,512,531 km

• M1: 68,366 km (0.112 R)
• M2: 838,945 km (0.087 R)
• M3: 1,347,727 km (0.103 R)
• M4: 3,680,856 km (0.041 R)
• M5: 5,707,009 km (0.077 R)
• M6: 6,155,952 km (0.064 R)
• M7: 7,555,740 km (0.106 R)
• M8: 9,510,535 km (0.115 R)
• M9: 10,034,128 km (0.106 R)
• M10: 10,743,072 km (0.105 R)
• M11: 10,967,768 km (0.084 R)
• M12: 12,199,407 km (0.088 R)
• M13: 12,505,784 km (0.099 R)
• M14: 12,692,033 km (0.119 R)
• M15: 19,345,847 km (0.093 R)
• M16: 20,527,521 km (0.11 R)
• M17: 24,167,686 km (0.077 R)
• M18: 26,240,663 km (0.063 R)
• M19: 26,546,142 km (0.097 R)
• M20: 26,751,241 km (0.08 R)
• M21: 31,303,953 km (0.091 R)
• M22: 36,221,085 km (0.103 R)
• M23: 38,664,766 km (0.113 R)
• M24: 46,058,043 km (0.095 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: 440 - 20,255 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit