🌌 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: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.47 AU - 0.65 AU

Year: 271 Days

Day: 12.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504

Radius: 9.6

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.65 AU - 0.81 AU

Year: 403 Days

Day: 10.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,392,401 km

• M1: 119,529 km (0.084 R)
• M2: 439,519 km (0.097 R)
• M3: 862,731 km (0.102 R)
• M4: 1,181,075 km (0.11 R)
• M5: 1,750,295 km (0.05 R)
• M6: 2,123,093 km (0.103 R)
• M7: 2,457,295 km (0.047 R)
• M8: 2,927,481 km (0.095 R)
• M9: 3,434,019 km (0.104 R)
• M10: 4,443,506 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.9

Radius: 13.5

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.09 AU - 1.31 AU

Year: 849 Days

Day: 12.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 54,392,401 km

• M1: 168,298 km (0.113 R)
• M2: 619,934 km (0.081 R)
• M3: 1,134,700 km (0.063 R)
• M4: 1,625,979 km (0.072 R)
• M5: 2,172,909 km (0.053 R)
• M6: 2,687,526 km (0.117 R)
• M7: 3,248,817 km (0.106 R)
• M8: 3,784,228 km (0.118 R)
• M9: 4,743,150 km (0.073 R)
• M10: 5,337,203 km (0.101 R)
• M11: 5,998,276 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.6

Radius: 11.9

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 3.06 AU - 3.22 AU

Year: 3593 Days

Day: 12.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 54,392,401 km

• M1: 148,102 km (0.061 R)
• M2: 531,072 km (0.098 R)
• M3: 908,807 km (0.1 R)
• M4: 1,620,743 km (0.111 R)
• M5: 2,366,040 km (0.034 R)
• M6: 4,625,117 km (0.119 R)
• M7: 7,278,236 km (0.084 R)
• M8: 7,711,621 km (0.119 R)
• M9: 8,828,070 km (0.106 R)
• M10: 10,111,769 km (0.079 R)
• M11: 10,880,253 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.2

Radius: 8.6

Gravity: 10.59 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 3.84 AU - 4.04 AU

Year: 5050 Days

Day: 8.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,392,401 km

• M1: 109,356 km (0.082 R)
• M2: 539,450 km (0.057 R)
• M3: 809,773 km (0.1 R)
• M4: 1,106,426 km (0.106 R)
• M5: 1,407,716 km (0.114 R)
• M6: 1,685,519 km (0.116 R)
• M7: 2,860,910 km (0.095 R)
• M8: 6,287,449 km (0.089 R)
• M9: 8,726,044 km (0.096 R)
• M10: 10,603,647 km (0.077 R)
• M11: 12,078,532 km (0.037 R)
• M12: 12,429,638 km (0.105 R)
• M13: 14,851,777 km (0.026 R)
• M14: 15,665,440 km (0.098 R)
• M15: 18,284,749 km (0.054 R)
• M16: 23,820,319 km (0.078 R)
• M17: 26,249,340 km (0.094 R)
• M18: 28,927,890 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.8

Radius: 10.8

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 3.49 AU - 4.39 AU

Year: 5050 Days

Day: 7.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 54,392,401 km

• M1: 134,488 km (0.065 R)
• M2: 583,731 km (0.038 R)
• M3: 959,371 km (0.05 R)
• M4: 1,371,812 km (0.109 R)
• M5: 1,711,848 km (0.095 R)
• M6: 2,315,027 km (0.08 R)
• M7: 3,205,733 km (0.068 R)
• M8: 3,772,709 km (0.112 R)
• M9: 5,294,568 km (0.063 R)
• M10: 6,927,728 km (0.085 R)
• M11: 8,200,506 km (0.071 R)
• M12: 11,294,190 km (0.046 R)
• M13: 12,462,251 km (0.053 R)
• M14: 13,402,623 km (0.076 R)
• M15: 13,812,371 km (0.112 R)
• M16: 14,230,497 km (0.101 R)
• M17: 15,704,635 km (0.098 R)
• M18: 16,102,864 km (0.104 R)
• M19: 21,984,005 km (0.114 R)
• M20: 22,771,040 km (0.114 R)
• M21: 23,281,617 km (0.083 R)
• M22: 24,629,644 km (0.098 R)
• M23: 26,029,132 km (0.067 R)
• M24: 27,316,870 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 388.8

Radius: 14.3

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.46 AU - 4.8 AU

Year: 6433 Days

Day: 13.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,392,401 km

• M1: 180,565 km (0.089 R)
• M2: 637,137 km (0.12 R)
• M3: 1,323,044 km (0.056 R)
• M4: 2,386,984 km (0.06 R)
• M5: 3,268,863 km (0.086 R)
• M6: 3,918,866 km (0.094 R)
• M7: 4,780,998 km (0.08 R)
• M8: 6,307,645 km (0.113 R)
• M9: 9,834,564 km (0.085 R)
• M10: 11,426,285 km (0.114 R)
• M11: 16,504,535 km (0.103 R)
• M12: 18,486,557 km (0.099 R)
• M13: 21,464,751 km (0.102 R)
• M14: 23,443,183 km (0.098 R)
• M15: 25,620,431 km (0.076 R)
• M16: 27,006,455 km (0.033 R)

Asteroid Belt

Center: 5.6 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 846.6

Radius: 4.8

Gravity: 36.74 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 5.78 AU - 7.36 AU

Year: 10873 Days

Day: 22.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 54,392,401 km

• M1: 59,690 km (0.089 R)
• M2: 562,937 km (0.058 R)
• M3: 898,485 km (0.087 R)
• M4: 1,129,165 km (0.058 R)
• M5: 1,483,113 km (0.084 R)
• M6: 2,310,240 km (0.068 R)
• M7: 3,589,451 km (0.12 R)
• M8: 4,027,923 km (0.119 R)
• M9: 4,201,157 km (0.061 R)
• M10: 5,809,334 km (0.118 R)
• M11: 6,143,835 km (0.103 R)
• M12: 7,057,130 km (0.062 R)
• M13: 7,224,680 km (0.112 R)
• M14: 8,758,507 km (0.034 R)
• M15: 9,601,341 km (0.1 R)
• M16: 11,620,463 km (0.107 R)
• M17: 11,854,285 km (0.108 R)
• M18: 12,575,047 km (0.069 R)
• M19: 14,037,367 km (0.116 R)
• M20: 14,639,049 km (0.057 R)
• M21: 15,257,936 km (0.098 R)
• M22: 16,110,045 km (0.119 R)
• M23: 19,753,501 km (0.106 R)
• M24: 25,253,018 km (0.091 R)
• M25: 26,543,749 km (0.052 R)
• M26: 28,508,717 km (0.087 R)
• M27: 29,580,735 km (0.049 R)
• M28: 30,016,962 km (0.085 R)
• M29: 32,493,406 km (0.108 R)
• M30: 32,725,133 km (0.101 R)
• M31: 33,544,630 km (0.093 R)
• M32: 34,019,005 km (0.093 R)
• M33: 37,720,654 km (0.101 R)
• M34: 39,404,827 km (0.079 R)
• M35: 44,186,873 km (0.108 R)
• M36: 49,801,281 km (0.112 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 459 - 17,707 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit