🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.1

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.47 AU - 0.59 AU

Year: 253 Days

Day: 40.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.54 AU - 0.74 AU

Year: 336 Days

Day: 35.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 36.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 14.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 2.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,630,271 km

• M1: 221,255 km (0.031 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 107.4

Radius: 13

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.66 AU - 1.08 AU

Year: 532 Days

Day: 10.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 63,630,271 km

• M1: 162,014 km (0.082 R)
• M2: 575,503 km (0.089 R)
• M3: 1,144,125 km (0.069 R)
• M4: 1,985,313 km (0.101 R)
• M5: 2,408,675 km (0.105 R)
• M6: 3,264,375 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.9

Radius: 12.3

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.63 AU - 2.11 AU

Year: 1678 Days

Day: 13.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 63,630,271 km

• M1: 153,787 km (0.061 R)
• M2: 782,397 km (0.093 R)
• M3: 1,471,893 km (0.111 R)
• M4: 2,090,929 km (0.042 R)
• M5: 2,739,287 km (0.092 R)
• M6: 3,567,161 km (0.082 R)
• M7: 4,477,763 km (0.096 R)
• M8: 5,382,681 km (0.112 R)
• M9: 6,186,470 km (0.11 R)
• M10: 10,879,954 km (0.103 R)
• M11: 13,303,290 km (0.104 R)
• M12: 14,255,929 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.3

Radius: 14.9

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 1.84 AU - 2.72 AU

Year: 2258 Days

Day: 7.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 63,630,271 km

• M1: 185,501 km (0.079 R)
• M2: 655,239 km (0.025 R)
• M3: 1,760,318 km (0.071 R)
• M4: 3,516,148 km (0.093 R)
• M5: 4,804,485 km (0.092 R)
• M6: 5,303,245 km (0.105 R)

Asteroid Belt

Center: 3.23 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.1

Radius: 13.9

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.93 AU - 4.41 AU

Year: 5586 Days

Day: 9.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 63,630,271 km

• M1: 174,730 km (0.085 R)
• M2: 622,776 km (0.118 R)
• M3: 1,385,127 km (0.032 R)
• M4: 1,858,754 km (0.077 R)
• M5: 2,562,312 km (0.079 R)
• M6: 4,276,704 km (0.119 R)
• M7: 5,393,003 km (0.078 R)
• M8: 5,847,033 km (0.074 R)
• M9: 7,439,053 km (0.092 R)
• M10: 8,883,122 km (0.085 R)
• M11: 10,049,835 km (0.098 R)
• M12: 10,600,056 km (0.072 R)
• M13: 12,792,264 km (0.107 R)
• M14: 13,329,918 km (0.087 R)
• M15: 14,051,578 km (0.09 R)
• M16: 15,034,287 km (0.06 R)
• M17: 17,396,288 km (0.097 R)
• M18: 18,940,886 km (0.112 R)
• M19: 20,942,505 km (0.116 R)
• M20: 22,611,419 km (0.06 R)
• M21: 25,785,287 km (0.096 R)
• M22: 27,969,566 km (0.082 R)
• M23: 29,897,434 km (0.067 R)
• M24: 31,716,843 km (0.109 R)
• M25: 33,608,957 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 61.2

Radius: 3.2

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 5.35 AU - 6.49 AU

Year: 9449 Days

Day: 20.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,630,271 km

• M1: 39,793 km (0.117 R)
• M2: 159,920 km (0.117 R)
• M3: 1,117,197 km (0.112 R)
• M4: 1,576,462 km (0.09 R)
• M5: 1,818,063 km (0.11 R)
• M6: 3,428,933 km (0.082 R)
• M7: 4,162,710 km (0.04 R)
• M8: 4,622,873 km (0.08 R)
• M9: 4,760,354 km (0.117 R)
• M10: 9,008,933 km (0.04 R)
• M11: 11,394,720 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 65.8

Radius: 3.1

Gravity: 6.85 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 5.91 AU - 7.81 AU

Year: 11787 Days

Day: 22.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 63,630,271 km

• M1: 39,045 km (0.116 R)
• M2: 332,257 km (0.116 R)
• M3: 753,076 km (0.09 R)
• M4: 909,405 km (0.053 R)
• M5: 1,042,847 km (0.114 R)
• M6: 2,418,998 km (0.061 R)
• M7: 3,282,776 km (0.095 R)
• M8: 4,472,976 km (0.096 R)
• M9: 6,270,993 km (0.112 R)
• M10: 9,788,937 km (0.082 R)
• M11: 10,521,966 km (0.054 R)
• M12: 10,732,002 km (0.118 R)
• M13: 11,378,564 km (0.078 R)
• M14: 11,644,399 km (0.073 R)
• M15: 16,422,405 km (0.102 R)
• M16: 19,082,405 km (0.041 R)
• M17: 23,624,945 km (0.091 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 298.9

Radius: 6.4

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 8.98 AU - 12.54 AU

Year: 23154 Days

Day: 21.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 63,630,271 km

• M1: 81,082 km (0.043 R)
• M2: 285,582 km (0.095 R)
• M3: 565,480 km (0.115 R)
• M4: 813,214 km (0.111 R)
• M5: 1,037,312 km (0.069 R)
• M6: 1,248,843 km (0.076 R)
• M7: 1,519,914 km (0.117 R)
• M8: 3,094,282 km (0.025 R)
• M9: 3,324,813 km (0.117 R)
• M10: 4,086,116 km (0.094 R)
• M11: 4,332,654 km (0.095 R)
• M12: 5,097,099 km (0.092 R)
• M13: 5,642,084 km (0.055 R)
• M14: 6,762,273 km (0.066 R)
• M15: 9,015,366 km (0.097 R)
• M16: 10,142,287 km (0.08 R)
• M17: 11,973,066 km (0.084 R)
• M18: 13,533,820 km (0.109 R)
• M19: 13,738,021 km (0.086 R)
• M20: 14,718,336 km (0.081 R)
• M21: 20,416,669 km (0.113 R)
• M22: 22,158,885 km (0.083 R)
• M23: 23,017,876 km (0.089 R)
• M24: 23,504,518 km (0.028 R)
• M25: 24,700,404 km (0.101 R)
• M26: 25,005,583 km (0.052 R)
• M27: 25,727,543 km (0.109 R)
• M28: 27,105,040 km (0.111 R)
• M29: 34,991,391 km (0.037 R)
• M30: 42,653,644 km (0.117 R)
• M31: 51,693,245 km (0.093 R)
• M32: 63,249,681 km (0.078 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: 475 - 15,436 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit