🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.72 AU - 0.76 AU

Year: 236 Days

Day: 13.6 Hours

Environment

Temp: 132 °C

Axial Tilt: 35 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.31 AU - 1.43 AU

Year: 595 Days

Day: 24.5 Hours

Environment

Temp: -38 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.81

Radius: 1.87

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.33 AU - 1.91 AU

Year: 765 Days

Day: 47.6 Hours

Environment

Temp: -58 °C

Axial Tilt: 7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.68

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.59 AU - 4.15 AU

Year: 2294 Days

Day: 17.1 Hours

Environment

Temp: -107 °C

Axial Tilt: 45 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 4.01 AU - 4.95 AU

Year: 3517 Days

Day: 38.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 37.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,160,779 km

• M1: 39,793 km (0.096 R)

Asteroid Belt

Center: 7.58 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 10.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.3

Radius: 10.4

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 10.13 AU - 11.21 AU

Year: 12926 Days

Day: 12.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 169.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,160,779 km

• M1: 129,851 km (0.032 R)
• M2: 878,289 km (0.066 R)
• M3: 2,181,287 km (0.095 R)
• M4: 5,952,050 km (0.083 R)
• M5: 8,978,266 km (0.083 R)
• M6: 11,805,666 km (0.115 R)
• M7: 13,596,202 km (0.069 R)
• M8: 14,191,153 km (0.1 R)
• M9: 15,369,236 km (0.096 R)
• M10: 16,212,071 km (0.045 R)
• M11: 25,325,274 km (0.113 R)
• M12: 26,408,811 km (0.12 R)
• M13: 35,318,262 km (0.092 R)
• M14: 39,716,888 km (0.067 R)
• M15: 41,055,340 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 853.8

Radius: 5.6

Gravity: 27.23 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 14.78 AU - 19.36 AU

Year: 26155 Days

Day: 17.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 61,160,779 km

• M1: 69,713 km (0.101 R)
• M2: 256,261 km (0.07 R)
• M3: 585,077 km (0.084 R)
• M4: 1,184,217 km (0.06 R)
• M5: 1,473,689 km (0.12 R)
• M6: 3,157,413 km (0.067 R)
• M7: 3,491,166 km (0.112 R)
• M8: 4,087,911 km (0.066 R)
• M9: 4,750,181 km (0.08 R)
• M10: 7,267,913 km (0.033 R)
• M11: 8,986,643 km (0.119 R)
• M12: 11,794,895 km (0.117 R)
• M13: 12,747,235 km (0.039 R)
• M14: 13,203,508 km (0.062 R)
• M15: 15,307,752 km (0.068 R)
• M16: 19,760,981 km (0.052 R)
• M17: 25,482,053 km (0.063 R)
• M18: 26,327,729 km (0.106 R)
• M19: 31,110,672 km (0.12 R)
• M20: 31,522,067 km (0.036 R)
• M21: 47,768,395 km (0.117 R)
• M22: 50,737,165 km (0.114 R)
• M23: 50,926,706 km (0.114 R)
• M24: 54,817,148 km (0.091 R)
• M25: 61,661,849 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 180.1

Radius: 6.4

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 13.5 AU - 22.32 AU

Year: 28109 Days

Day: 23.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 61,160,779 km

• M1: 90,357 km (0.09 R)
• M2: 349,012 km (0.107 R)
• M3: 872,305 km (0.091 R)
• M4: 1,322,445 km (0.041 R)
• M5: 1,695,991 km (0.091 R)
• M6: 2,355,418 km (0.114 R)
• M7: 3,326,458 km (0.087 R)
• M8: 3,592,593 km (0.108 R)
• M9: 4,735,521 km (0.053 R)
• M10: 5,795,422 km (0.12 R)
• M11: 8,817,598 km (0.072 R)
• M12: 11,096,272 km (0.107 R)
• M13: 13,010,976 km (0.079 R)
• M14: 14,849,234 km (0.116 R)
• M15: 15,571,942 km (0.118 R)
• M16: 18,450,504 km (0.088 R)
• M17: 19,798,381 km (0.1 R)
• M18: 20,058,232 km (0.107 R)
• M19: 21,030,469 km (0.047 R)
• M20: 21,941,220 km (0.032 R)
• M21: 23,452,757 km (0.101 R)
• M22: 24,730,922 km (0.094 R)
• M23: 28,622,112 km (0.103 R)
• M24: 29,514,014 km (0.091 R)
• M25: 37,458,858 km (0.052 R)
• M26: 41,562,926 km (0.062 R)
• M27: 45,805,821 km (0.106 R)
• M28: 48,265,808 km (0.056 R)
• M29: 49,210,668 km (0.107 R)
• M30: 51,299,952 km (0.112 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: 417 - 18,260 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit