🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.16

Radius: 1.58

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.46 AU - 0.6 AU

Year: 147 Days

Day: 31 Hours

Environment

Temp: 218 °C

Axial Tilt: 49.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.96 AU - 1.24 AU

Year: 439 Days

Day: 34.8 Hours

Environment

Temp: -8 °C

Axial Tilt: 29.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 54,675,386 km

• M1: 166,652 km (0.039 R)
• M2: 283,189 km (0.065 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.02 AU - 1.38 AU

Year: 501 Days

Day: 41.1 Hours

Environment

Temp: -20 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,675,386 km

• M1: 45,328 km (0.079 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.18 AU - 1.48 AU

Year: 584 Days

Day: 19.8 Hours

Environment

Temp: -29 °C

Axial Tilt: 49.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.71 AU - 3.45 AU

Year: 2058 Days

Day: 19.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 42.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 2.94 AU - 4.58 AU

Year: 2776 Days

Day: 40.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.78 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.2

Radius: 12.7

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 6.72 AU - 8.88 AU

Year: 8295 Days

Day: 12.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 54,675,386 km

• M1: 157,975 km (0.048 R)
• M2: 584,180 km (0.097 R)
• M3: 1,180,926 km (0.12 R)
• M4: 2,067,293 km (0.069 R)
• M5: 3,040,876 km (0.089 R)
• M6: 3,830,753 km (0.096 R)
• M7: 6,092,822 km (0.091 R)
• M8: 6,667,876 km (0.095 R)
• M9: 9,338,647 km (0.06 R)
• M10: 11,050,496 km (0.09 R)
• M11: 12,655,082 km (0.084 R)
• M12: 14,134,306 km (0.05 R)
• M13: 14,745,862 km (0.061 R)
• M14: 15,317,176 km (0.103 R)
• M15: 16,261,887 km (0.072 R)
• M16: 18,661,138 km (0.045 R)
• M17: 23,528,304 km (0.085 R)
• M18: 25,922,169 km (0.112 R)
• M19: 26,839,204 km (0.051 R)
• M20: 28,561,973 km (0.101 R)
• M21: 29,810,966 km (0.072 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492

Radius: 9.2

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 8.19 AU - 8.65 AU

Year: 9304 Days

Day: 9.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 54,675,386 km

• M1: 114,442 km (0.065 R)
• M2: 560,693 km (0.12 R)
• M3: 1,119,740 km (0.091 R)
• M4: 2,248,606 km (0.076 R)
• M5: 2,609,585 km (0.065 R)
• M6: 3,733,664 km (0.116 R)
• M7: 4,682,713 km (0.091 R)
• M8: 5,883,834 km (0.119 R)
• M9: 10,074,369 km (0.104 R)
• M10: 11,526,217 km (0.051 R)
• M11: 15,854,682 km (0.076 R)
• M12: 17,394,193 km (0.077 R)
• M13: 22,525,849 km (0.099 R)
• M14: 23,610,134 km (0.066 R)
• M15: 24,467,480 km (0.051 R)
• M16: 25,972,584 km (0.054 R)
• M17: 26,701,724 km (0.065 R)
• M18: 30,554,168 km (0.066 R)
• M19: 32,507,468 km (0.119 R)
• M20: 33,890,949 km (0.1 R)
• M21: 35,758,828 km (0.078 R)
• M22: 36,661,202 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.5

Radius: 10.5

Gravity: 8.11 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 8.46 AU - 9.98 AU

Year: 10661 Days

Day: 13 Hours

Environment

Temp: -173 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 54,675,386 km

• M1: 130,599 km (0.118 R)
• M2: 657,632 km (0.119 R)
• M3: 1,240,316 km (0.068 R)
• M4: 1,603,240 km (0.062 R)
• M5: 1,951,654 km (0.075 R)
• M6: 2,312,484 km (0.109 R)
• M7: 3,341,268 km (0.076 R)
• M8: 3,754,009 km (0.078 R)
• M9: 4,467,292 km (0.116 R)
• M10: 5,579,402 km (0.091 R)
• M11: 6,314,825 km (0.119 R)
• M12: 7,281,228 km (0.078 R)
• M13: 8,205,144 km (0.096 R)
• M14: 8,911,695 km (0.082 R)
• M15: 9,607,325 km (0.066 R)
• M16: 10,178,789 km (0.066 R)
• M17: 10,994,696 km (0.113 R)
• M18: 11,504,675 km (0.119 R)
• M19: 12,633,391 km (0.07 R)
• M20: 14,903,538 km (0.11 R)
• M21: 16,757,056 km (0.117 R)
• M22: 21,175,579 km (0.095 R)
• M23: 26,114,552 km (0.12 R)
• M24: 29,225,440 km (0.105 R)
• M25: 30,758,369 km (0.06 R)
• M26: 31,771,745 km (0.079 R)
• M27: 32,344,107 km (0.089 R)
• M28: 36,172,466 km (0.114 R)
• M29: 36,546,161 km (0.112 R)
• M30: 41,098,574 km (0.12 R)
• M31: 48,237,684 km (0.09 R)
• M32: 50,686,003 km (0.069 R)
• M33: 51,310,723 km (0.076 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 150 - 12,935 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit