🌌 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: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.47 AU - 0.73 AU

Year: 300 Days

Day: 33.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 21.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.65

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.48 AU - 0.74 AU

Year: 308 Days

Day: 37.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,763,608 km

• M1: 42,486 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.7

Radius: 14.6

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.55 AU - 0.83 AU

Year: 370 Days

Day: 9.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 85,763,608 km

• M1: 181,612 km (0.069 R)
• M2: 658,081 km (0.049 R)
• M3: 1,132,605 km (0.119 R)
• M4: 1,987,258 km (0.074 R)
• M5: 2,607,940 km (0.12 R)
• M6: 3,110,289 km (0.113 R)
• M7: 3,592,443 km (0.091 R)
• M8: 4,205,047 km (0.081 R)
• M9: 5,708,056 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.6

Radius: 12.4

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.36 AU - 2.18 AU

Year: 1520 Days

Day: 10.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 85,763,608 km

• M1: 154,235 km (0.115 R)
• M2: 624,122 km (0.057 R)
• M3: 1,072,018 km (0.1 R)
• M4: 1,583,344 km (0.096 R)
• M5: 2,582,957 km (0.108 R)
• M6: 2,983,879 km (0.093 R)
• M7: 3,681,005 km (0.094 R)
• M8: 4,103,769 km (0.104 R)
• M9: 4,596,843 km (0.073 R)
• M10: 5,027,835 km (0.067 R)
• M11: 6,085,791 km (0.05 R)
• M12: 7,312,942 km (0.088 R)
• M13: 8,523,488 km (0.117 R)
• M14: 9,516,070 km (0.12 R)
• M15: 10,024,254 km (0.112 R)
• M16: 11,129,932 km (0.037 R)
• M17: 11,802,374 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.5

Radius: 11.7

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 2.33 AU - 3.33 AU

Year: 3074 Days

Day: 14.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 85,763,608 km

• M1: 145,559 km (0.103 R)
• M2: 546,182 km (0.109 R)
• M3: 913,594 km (0.109 R)
• M4: 1,920,089 km (0.09 R)
• M5: 2,306,650 km (0.091 R)
• M6: 2,843,556 km (0.105 R)
• M7: 3,368,944 km (0.105 R)
• M8: 3,814,895 km (0.072 R)
• M9: 10,151,113 km (0.115 R)
• M10: 11,947,335 km (0.117 R)
• M11: 12,666,901 km (0.089 R)
• M12: 14,143,282 km (0.104 R)
• M13: 14,795,379 km (0.098 R)
• M14: 15,310,594 km (0.105 R)
• M15: 18,956,444 km (0.067 R)
• M16: 19,687,678 km (0.057 R)
• M17: 21,861,784 km (0.117 R)
• M18: 22,328,529 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.2

Radius: 8.4

Gravity: 5.3 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.94 AU - 3.66 AU

Year: 3871 Days

Day: 9 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 85,763,608 km

• M1: 104,569 km (0.085 R)
• M2: 451,935 km (0.108 R)
• M3: 739,462 km (0.102 R)
• M4: 1,078,601 km (0.059 R)
• M5: 1,419,833 km (0.117 R)
• M6: 1,856,360 km (0.085 R)
• M7: 2,525,661 km (0.105 R)
• M8: 2,883,649 km (0.085 R)
• M9: 3,293,098 km (0.083 R)
• M10: 4,020,443 km (0.099 R)
• M11: 4,781,447 km (0.12 R)
• M12: 5,532,578 km (0.12 R)
• M13: 6,388,128 km (0.119 R)
• M14: 7,421,999 km (0.116 R)
• M15: 8,666,504 km (0.082 R)
• M16: 10,547,996 km (0.056 R)
• M17: 12,030,062 km (0.087 R)
• M18: 12,776,107 km (0.085 R)
• M19: 13,275,016 km (0.101 R)
• M20: 15,401,849 km (0.087 R)
• M21: 15,863,209 km (0.078 R)
• M22: 18,026,543 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 146.1

Radius: 5.7

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 5.41 AU - 7.05 AU

Year: 10040 Days

Day: 17.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 85,763,608 km

• M1: 70,909 km (0.11 R)
• M2: 328,667 km (0.095 R)
• M3: 706,401 km (0.102 R)
• M4: 983,307 km (0.067 R)
• M5: 1,757,027 km (0.091 R)
• M6: 2,074,174 km (0.096 R)
• M7: 2,300,965 km (0.115 R)
• M8: 3,121,509 km (0.099 R)
• M9: 4,836,649 km (0.07 R)
• M10: 5,573,568 km (0.118 R)
• M11: 6,540,718 km (0.11 R)
• M12: 6,930,869 km (0.105 R)
• M13: 7,405,244 km (0.041 R)
• M14: 8,381,221 km (0.104 R)
• M15: 10,022,908 km (0.064 R)
• M16: 12,107,105 km (0.109 R)
• M17: 13,664,270 km (0.117 R)
• M18: 13,980,370 km (0.035 R)
• M19: 15,463,633 km (0.073 R)
• M20: 15,691,919 km (0.111 R)
• M21: 16,213,866 km (0.104 R)
• M22: 17,974,633 km (0.048 R)
• M23: 21,942,567 km (0.098 R)
• M24: 28,373,331 km (0.054 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 905.4

Radius: 7.8

Gravity: 14.88 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 7.97 AU - 12.29 AU

Year: 20818 Days

Day: 17.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 85,763,608 km

• M1: 97,089 km (0.111 R)
• M2: 409,898 km (0.108 R)
• M3: 712,834 km (0.09 R)
• M4: 960,269 km (0.072 R)
• M5: 1,208,751 km (0.099 R)
• M6: 1,484,310 km (0.049 R)
• M7: 1,727,556 km (0.069 R)
• M8: 2,080,158 km (0.036 R)
• M9: 5,023,945 km (0.091 R)
• M10: 7,903,405 km (0.118 R)
• M11: 8,765,986 km (0.106 R)
• M12: 10,052,678 km (0.09 R)
• M13: 10,934,408 km (0.067 R)
• M14: 11,798,335 km (0.099 R)
• M15: 16,383,061 km (0.07 R)
• M16: 16,639,322 km (0.111 R)
• M17: 17,335,700 km (0.087 R)
• M18: 17,960,870 km (0.106 R)
• M19: 22,031,727 km (0.072 R)
• M20: 26,443,518 km (0.12 R)
• M21: 29,480,654 km (0.096 R)
• M22: 39,512,238 km (0.086 R)
• M23: 39,973,449 km (0.066 R)
• M24: 41,221,095 km (0.102 R)
• M25: 43,466,709 km (0.093 R)
• M26: 52,336,516 km (0.078 R)
• M27: 59,477,121 km (0.108 R)
• M28: 59,880,587 km (0.093 R)
• M29: 60,285,997 km (0.089 R)
• M30: 72,162,572 km (0.088 R)
• M31: 75,181,008 km (0.115 R)
• M32: 79,742,397 km (0.091 R)
• M33: 81,717,089 km (0.104 R)
• M34: 83,219,201 km (0.104 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 272 - 12,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit