🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.56 AU - 0.62 AU

Year: 165 Days

Day: 44.8 Hours

Environment

Temp: 169 °C

Axial Tilt: 26.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.34

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.52 AU - 0.84 AU

Year: 204 Days

Day: 25.3 Hours

Environment

Temp: 149 °C

Axial Tilt: 81 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 116,546,684 km

• M1: 64,776 km (0.114 R)
• M2: 462,407 km (0.091 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.49 AU - 2.39 AU

Year: 982 Days

Day: 36.9 Hours

Environment

Temp: -64 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 116,546,684 km

• M1: 27,526 km (0.112 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.63

Radius: 1.85

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 1.61 AU - 2.35 AU

Year: 1013 Days

Day: 30.2 Hours

Environment

Temp: -70 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.85 AU - 2.91 AU

Year: 1334 Days

Day: 34.3 Hours

Environment

Temp: -87 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.34

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.19 AU - 5.15 AU

Year: 3095 Days

Day: 42.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 116,546,684 km

• M1: 2,314,429 km (0.111 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 4.66 AU - 4.78 AU

Year: 3727 Days

Day: 13.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 11.26 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 17.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 722.6

Radius: 3.6

Gravity: 55.76 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 14.84 AU - 20.74 AU

Year: 27271 Days

Day: 20 Hours

Environment

Temp: -193 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 116,546,684 km

• M1: 45,627 km (0.107 R)
• M2: 226,342 km (0.058 R)
• M3: 590,762 km (0.092 R)
• M4: 829,371 km (0.101 R)
• M5: 1,393,953 km (0.088 R)
• M6: 2,564,108 km (0.067 R)
• M7: 2,826,203 km (0.115 R)
• M8: 3,786,472 km (0.076 R)
• M9: 4,376,187 km (0.063 R)
• M10: 4,712,183 km (0.058 R)
• M11: 4,945,406 km (0.086 R)
• M12: 5,393,153 km (0.078 R)
• M13: 7,148,235 km (0.103 R)
• M14: 7,719,849 km (0.112 R)
• M15: 8,777,655 km (0.054 R)
• M16: 9,071,316 km (0.071 R)
• M17: 9,190,545 km (0.119 R)
• M18: 9,554,816 km (0.035 R)
• M19: 11,802,225 km (0.111 R)
• M20: 15,711,217 km (0.04 R)
• M21: 16,143,854 km (0.053 R)
• M22: 16,407,296 km (0.115 R)
• M23: 20,097,726 km (0.119 R)
• M24: 26,796,419 km (0.118 R)
• M25: 31,590,882 km (0.072 R)
• M26: 33,119,323 km (0.063 R)
• M27: 36,172,765 km (0.066 R)
• M28: 39,885,934 km (0.081 R)
• M29: 41,014,949 km (0.095 R)
• M30: 41,669,589 km (0.073 R)
• M31: 49,891,039 km (0.111 R)
• M32: 51,012,575 km (0.06 R)
• M33: 55,467,300 km (0.099 R)
• M34: 58,921,814 km (0.069 R)
• M35: 63,383,571 km (0.106 R)
• M36: 66,031,603 km (0.083 R)
• M37: 73,451,358 km (0.062 R)
• M38: 76,371,059 km (0.1 R)
• M39: 82,960,546 km (0.109 R)
• M40: 88,551,617 km (0.06 R)
• M41: 94,104,840 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 918

Radius: 7.5

Gravity: 16.32 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 19.28 AU - 20.92 AU

Year: 32751 Days

Day: 17.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 116,546,684 km

• M1: 93,349 km (0.088 R)
• M2: 879,486 km (0.091 R)
• M3: 1,604,587 km (0.076 R)
• M4: 2,047,097 km (0.087 R)
• M5: 2,436,800 km (0.114 R)
• M6: 2,704,879 km (0.097 R)
• M7: 3,945,045 km (0.108 R)
• M8: 4,630,054 km (0.111 R)
• M9: 5,001,057 km (0.101 R)
• M10: 6,483,273 km (0.093 R)
• M11: 7,161,848 km (0.114 R)
• M12: 8,416,526 km (0.083 R)
• M13: 10,286,200 km (0.117 R)
• M14: 12,416,773 km (0.11 R)
• M15: 12,811,711 km (0.082 R)
• M16: 14,303,352 km (0.093 R)
• M17: 15,815,188 km (0.111 R)
• M18: 19,468,218 km (0.101 R)
• M19: 23,288,050 km (0.096 R)
• M20: 25,247,184 km (0.113 R)
• M21: 28,116,770 km (0.077 R)
• M22: 29,770,275 km (0.08 R)
• M23: 30,335,606 km (0.105 R)
• M24: 41,773,261 km (0.064 R)
• M25: 49,418,759 km (0.094 R)
• M26: 53,465,531 km (0.116 R)
• M27: 62,440,954 km (0.087 R)
• M28: 67,890,506 km (0.109 R)
• M29: 70,355,579 km (0.101 R)
• M30: 91,962,149 km (0.035 R)
• M31: 92,559,943 km (0.103 R)
• M32: 104,741,996 km (0.057 R)
• M33: 112,745,782 km (0.118 R)

Kuiper Belt

Range: 30.2 - 59.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 505 - 20,198 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit