🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.49 AU - 0.79 AU

Year: 336 Days

Day: 19.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,911,697 km

• M1: 92,451 km (0.103 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.7

Radius: 15

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.95 AU - 0.99 AU

Year: 627 Days

Day: 5.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 64,911,697 km

• M1: 186,549 km (0.06 R)
• M2: 1,278,463 km (0.073 R)
• M3: 2,050,837 km (0.08 R)
• M4: 2,777,584 km (0.051 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.5

Radius: 10.8

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.21 AU - 1.61 AU

Year: 1098 Days

Day: 13.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 162.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,911,697 km

• M1: 134,339 km (0.061 R)
• M2: 492,476 km (0.088 R)
• M3: 836,252 km (0.09 R)
• M4: 1,245,701 km (0.116 R)
• M5: 1,916,050 km (0.105 R)
• M6: 2,693,210 km (0.08 R)
• M7: 3,288,311 km (0.101 R)
• M8: 4,237,958 km (0.106 R)
• M9: 4,689,744 km (0.091 R)
• M10: 5,361,288 km (0.093 R)
• M11: 5,830,278 km (0.112 R)
• M12: 6,241,822 km (0.112 R)
• M13: 7,077,625 km (0.117 R)
• M14: 7,522,679 km (0.087 R)
• M15: 7,887,099 km (0.117 R)
• M16: 8,520,945 km (0.11 R)
• M17: 8,890,452 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887.2

Radius: 12.2

Gravity: 5.96 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.52 AU - 1.6 AU

Year: 1278 Days

Day: 8.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,911,697 km

• M1: 151,692 km (0.108 R)
• M2: 534,663 km (0.095 R)
• M3: 941,120 km (0.12 R)
• M4: 1,354,010 km (0.05 R)
• M5: 1,809,685 km (0.101 R)
• M6: 2,404,337 km (0.117 R)
• M7: 3,215,157 km (0.068 R)
• M8: 3,801,132 km (0.097 R)
• M9: 5,441,174 km (0.109 R)
• M10: 5,927,816 km (0.119 R)
• M11: 7,564,716 km (0.114 R)
• M12: 8,143,809 km (0.117 R)
• M13: 8,811,913 km (0.114 R)
• M14: 10,159,042 km (0.074 R)
• M15: 11,247,217 km (0.071 R)
• M16: 12,076,438 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.9

Radius: 10.2

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.67 AU - 1.89 AU

Year: 1558 Days

Day: 5.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,911,697 km

• M1: 126,859 km (0.11 R)
• M2: 452,833 km (0.095 R)
• M3: 780,901 km (0.049 R)
• M4: 1,246,300 km (0.102 R)
• M5: 1,664,576 km (0.093 R)
• M6: 2,708,469 km (0.101 R)
• M7: 3,204,536 km (0.116 R)
• M8: 3,693,871 km (0.033 R)
• M9: 4,435,876 km (0.098 R)
• M10: 4,862,529 km (0.088 R)
• M11: 5,686,664 km (0.094 R)
• M12: 6,576,472 km (0.078 R)
• M13: 7,029,155 km (0.079 R)
• M14: 7,369,042 km (0.113 R)
• M15: 8,025,327 km (0.089 R)
• M16: 8,631,199 km (0.072 R)
• M17: 9,644,575 km (0.083 R)
• M18: 10,632,968 km (0.107 R)
• M19: 12,165,598 km (0.108 R)
• M20: 12,926,453 km (0.115 R)
• M21: 13,318,698 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708

Radius: 13.3

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.97 AU - 2.45 AU

Year: 2155 Days

Day: 10.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,911,697 km

• M1: 165,455 km (0.064 R)
• M2: 650,152 km (0.027 R)
• M3: 1,311,674 km (0.078 R)
• M4: 2,837,572 km (0.031 R)
• M5: 3,277,689 km (0.106 R)
• M6: 3,781,984 km (0.053 R)
• M7: 4,752,874 km (0.114 R)
• M8: 7,186,233 km (0.103 R)
• M9: 7,921,207 km (0.076 R)
• M10: 8,738,012 km (0.102 R)
• M11: 9,268,037 km (0.101 R)
• M12: 11,217,896 km (0.095 R)
• M13: 15,289,650 km (0.085 R)
• M14: 16,406,548 km (0.103 R)
• M15: 17,266,437 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 418.1

Radius: 4.4

Gravity: 21.6 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 5.93 AU - 8.05 AU

Year: 12123 Days

Day: 17.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 64,911,697 km

• M1: 56,548 km (0.113 R)
• M2: 240,254 km (0.087 R)
• M3: 587,770 km (0.037 R)
• M4: 820,395 km (0.088 R)
• M5: 1,036,115 km (0.103 R)
• M6: 1,264,401 km (0.099 R)
• M7: 2,120,550 km (0.056 R)
• M8: 2,751,853 km (0.107 R)
• M9: 3,144,846 km (0.05 R)
• M10: 3,674,872 km (0.043 R)
• M11: 3,908,095 km (0.112 R)
• M12: 4,096,289 km (0.067 R)
• M13: 5,193,140 km (0.091 R)
• M14: 5,553,821 km (0.049 R)
• M15: 6,774,540 km (0.097 R)
• M16: 6,967,970 km (0.09 R)
• M17: 11,006,215 km (0.116 R)
• M18: 11,655,469 km (0.085 R)
• M19: 12,618,580 km (0.103 R)
• M20: 13,209,342 km (0.045 R)
• M21: 15,892,530 km (0.104 R)
• M22: 16,097,030 km (0.049 R)
• M23: 20,005,723 km (0.09 R)
• M24: 20,244,182 km (0.027 R)
• M25: 22,305,641 km (0.066 R)
• M26: 23,519,029 km (0.081 R)
• M27: 25,888,061 km (0.085 R)
• M28: 31,413,907 km (0.098 R)
• M29: 32,825,962 km (0.113 R)
• M30: 38,651,602 km (0.057 R)
• M31: 39,643,286 km (0.115 R)
• M32: 42,327,072 km (0.042 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 643.7

Radius: 5.3

Gravity: 22.92 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 6.39 AU - 10.61 AU

Year: 16257 Days

Day: 22.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 64,911,697 km

• M1: 65,973 km (0.098 R)
• M2: 255,513 km (0.073 R)
• M3: 546,780 km (0.104 R)
• M4: 1,043,146 km (0.066 R)
• M5: 1,245,552 km (0.111 R)
• M6: 1,713,793 km (0.045 R)
• M7: 1,960,630 km (0.071 R)
• M8: 2,131,620 km (0.085 R)
• M9: 2,569,942 km (0.059 R)
• M10: 3,350,544 km (0.099 R)
• M11: 3,971,973 km (0.069 R)
• M12: 4,734,174 km (0.084 R)
• M13: 5,185,661 km (0.051 R)
• M14: 5,440,426 km (0.079 R)
• M15: 6,670,270 km (0.112 R)
• M16: 10,276,775 km (0.119 R)
• M17: 10,679,044 km (0.07 R)
• M18: 10,913,613 km (0.112 R)
• M19: 12,849,410 km (0.115 R)
• M20: 19,221,830 km (0.085 R)
• M21: 19,569,197 km (0.088 R)
• M22: 20,908,546 km (0.099 R)
• M23: 25,292,063 km (0.106 R)
• M24: 29,901,473 km (0.113 R)
• M25: 34,527,637 km (0.081 R)
• M26: 35,169,711 km (0.105 R)
• M27: 36,345,551 km (0.117 R)
• M28: 38,500,209 km (0.103 R)
• M29: 49,254,650 km (0.119 R)
• M30: 49,904,802 km (0.086 R)
• M31: 50,396,082 km (0.09 R)
• M32: 53,925,844 km (0.07 R)
• M33: 54,270,368 km (0.081 R)
• M34: 61,472,607 km (0.059 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 281 - 16,761 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit