🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.45 AU - 0.71 AU

Year: 285 Days

Day: 40.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 80.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,809,911 km

• M1: 99,034 km (0.067 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.55 AU - 0.65 AU

Year: 300 Days

Day: 39.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 9.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,809,911 km

• M1: 116,986 km (0.119 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.63 AU - 0.69 AU

Year: 346 Days

Day: 26.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 7.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.1

Radius: 8.2

Gravity: 10.62 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.78 AU - 0.96 AU

Year: 524 Days

Day: 11.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 68,809,911 km

• M1: 102,325 km (0.084 R)
• M2: 374,892 km (0.097 R)
• M3: 642,373 km (0.084 R)
• M4: 910,153 km (0.082 R)
• M5: 1,260,362 km (0.106 R)
• M6: 1,676,543 km (0.032 R)
• M7: 2,091,079 km (0.115 R)
• M8: 2,362,001 km (0.101 R)
• M9: 2,624,844 km (0.084 R)
• M10: 3,797,991 km (0.084 R)
• M11: 4,940,021 km (0.117 R)
• M12: 5,254,027 km (0.112 R)
• M13: 5,977,333 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.7

Radius: 8

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.29 AU - 1.57 AU

Year: 1104 Days

Day: 10.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 68,809,911 km

• M1: 100,979 km (0.058 R)
• M2: 578,345 km (0.059 R)
• M3: 904,618 km (0.065 R)
• M4: 1,650,962 km (0.032 R)
• M5: 1,978,581 km (0.091 R)
• M6: 2,449,067 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.5

Radius: 11.6

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.65 AU - 2.15 AU

Year: 1691 Days

Day: 13.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 68,809,911 km

• M1: 144,512 km (0.096 R)
• M2: 711,487 km (0.1 R)
• M3: 1,816,417 km (0.054 R)
• M4: 2,401,495 km (0.088 R)
• M5: 3,204,985 km (0.092 R)
• M6: 3,639,567 km (0.102 R)
• M7: 4,196,370 km (0.104 R)
• M8: 4,938,974 km (0.115 R)
• M9: 5,871,567 km (0.11 R)
• M10: 6,458,439 km (0.059 R)
• M11: 6,941,491 km (0.094 R)
• M12: 7,498,294 km (0.104 R)
• M13: 8,216,065 km (0.102 R)
• M14: 9,063,686 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.8

Radius: 10.7

Gravity: 8.13 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 3.16 AU - 3.46 AU

Year: 3888 Days

Day: 8.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,809,911 km

• M1: 133,142 km (0.052 R)
• M2: 475,572 km (0.107 R)
• M3: 1,392,457 km (0.057 R)
• M4: 1,867,879 km (0.092 R)
• M5: 2,531,046 km (0.085 R)
• M6: 3,037,136 km (0.082 R)
• M7: 3,672,927 km (0.081 R)
• M8: 5,264,349 km (0.079 R)
• M9: 6,617,312 km (0.096 R)
• M10: 9,380,534 km (0.081 R)
• M11: 10,596,316 km (0.115 R)
• M12: 11,772,904 km (0.04 R)
• M13: 12,248,026 km (0.115 R)
• M14: 13,543,095 km (0.068 R)
• M15: 14,927,474 km (0.108 R)
• M16: 20,314,344 km (0.086 R)
• M17: 21,067,569 km (0.114 R)
• M18: 23,142,940 km (0.099 R)
• M19: 23,663,541 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.9

Radius: 13.5

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 5.66 AU - 5.72 AU

Year: 8764 Days

Day: 10 Hours

Environment

Temp: -228 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 68,809,911 km

• M1: 183,706 km (0.092 R)
• M2: 1,092,513 km (0.115 R)
• M3: 1,580,801 km (0.099 R)
• M4: 2,124,290 km (0.057 R)
• M5: 2,630,379 km (0.084 R)
• M6: 4,707,845 km (0.104 R)
• M7: 6,162,684 km (0.104 R)
• M8: 7,204,484 km (0.03 R)
• M9: 7,638,168 km (0.116 R)
• M10: 9,898,293 km (0.113 R)
• M11: 10,664,982 km (0.085 R)
• M12: 14,415,400 km (0.058 R)
• M13: 16,123,359 km (0.101 R)
• M14: 25,796,956 km (0.051 R)
• M15: 27,075,419 km (0.106 R)
• M16: 28,128,140 km (0.109 R)
• M17: 28,664,747 km (0.063 R)
• M18: 32,125,694 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 273

Radius: 3.6

Gravity: 21.06 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 6.93 AU - 10.19 AU

Year: 16171 Days

Day: 17.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,809,911 km

• M1: 56,398 km (0.088 R)
• M2: 494,421 km (0.119 R)
• M3: 878,588 km (0.039 R)
• M4: 1,192,594 km (0.102 R)
• M5: 1,505,254 km (0.092 R)
• M6: 4,352,101 km (0.103 R)
• M7: 4,588,167 km (0.082 R)
• M8: 5,933,500 km (0.088 R)
• M9: 6,334,871 km (0.108 R)
• M10: 6,485,217 km (0.106 R)
• M11: 6,950,616 km (0.082 R)
• M12: 10,067,189 km (0.077 R)
• M13: 13,012,472 km (0.109 R)
• M14: 19,088,090 km (0.078 R)
• M15: 27,705,974 km (0.115 R)
• M16: 27,906,735 km (0.118 R)
• M17: 35,439,287 km (0.068 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 733.1

Radius: 3.5

Gravity: 59.84 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 8.27 AU - 9.17 AU

Year: 16626 Days

Day: 16.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 68,809,911 km

• M1: 44,431 km (0.066 R)
• M2: 224,247 km (0.092 R)
• M3: 500,405 km (0.105 R)
• M4: 618,737 km (0.105 R)
• M5: 1,427,313 km (0.118 R)
• M6: 2,234,095 km (0.066 R)
• M7: 2,537,329 km (0.118 R)
• M8: 3,442,696 km (0.092 R)
• M9: 3,816,840 km (0.064 R)
• M10: 3,998,452 km (0.114 R)
• M11: 7,183,091 km (0.102 R)
• M12: 7,413,322 km (0.088 R)
• M13: 19,456,250 km (0.099 R)
• M14: 22,535,872 km (0.102 R)
• M15: 23,934,911 km (0.086 R)
• M16: 30,111,359 km (0.082 R)
• M17: 31,560,064 km (0.099 R)
• M18: 32,177,305 km (0.074 R)
• M19: 34,076,899 km (0.033 R)
• M20: 36,318,773 km (0.105 R)
• M21: 51,353,059 km (0.103 R)
• M22: 58,076,137 km (0.037 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 214 - 19,803 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit