🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.4 AU - 0.64 AU

Year: 143 Days

Day: 37.1 Hours

Environment

Temp: 161 °C

Axial Tilt: 34.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.51 AU - 0.61 AU

Year: 160 Days

Day: 45.4 Hours

Environment

Temp: 172 °C

Axial Tilt: 46.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 65,781,899 km

• M1: 91,554 km (0.056 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.46 AU - 0.74 AU

Year: 177 Days

Day: 15.3 Hours

Environment

Temp: 147 °C

Axial Tilt: 4.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.83 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.69 AU - 0.97 AU

Year: 288 Days

Day: 47.8 Hours

Environment

Temp: 42 °C

Axial Tilt: 5.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 1.39 AU - 2.25 AU

Year: 935 Days

Day: 46.8 Hours

Environment

Temp: -66 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.7 AU - 2.96 AU

Year: 1813 Days

Day: 23.2 Hours

Environment

Temp: -113 °C

Axial Tilt: 7.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34.8

Radius: 11.8

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 5.44 AU - 5.62 AU

Year: 4952 Days

Day: 9.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 65,781,899 km

• M1: 146,756 km (0.072 R)
• M2: 562,638 km (0.1 R)
• M3: 1,012,478 km (0.104 R)
• M4: 1,452,595 km (0.059 R)
• M5: 1,863,840 km (0.075 R)
• M6: 2,468,215 km (0.103 R)
• M7: 3,609,797 km (0.109 R)
• M8: 4,699,019 km (0.063 R)
• M9: 5,350,218 km (0.092 R)
• M10: 6,060,808 km (0.093 R)
• M11: 6,645,736 km (0.089 R)
• M12: 7,619,169 km (0.106 R)
• M13: 8,087,111 km (0.119 R)
• M14: 8,995,021 km (0.101 R)
• M15: 10,092,471 km (0.054 R)
• M16: 10,625,787 km (0.055 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 208.2

Radius: 6.9

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 11.59 AU - 13.37 AU

Year: 16789 Days

Day: 20.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 65,781,899 km

• M1: 87,066 km (0.093 R)
• M2: 355,295 km (0.118 R)
• M3: 1,182,571 km (0.029 R)
• M4: 2,843,856 km (0.082 R)
• M5: 3,059,725 km (0.059 R)
• M6: 5,834,018 km (0.118 R)
• M7: 6,438,094 km (0.11 R)
• M8: 9,900,537 km (0.113 R)
• M9: 11,020,127 km (0.113 R)
• M10: 13,208,594 km (0.118 R)
• M11: 16,211,622 km (0.115 R)
• M12: 17,258,508 km (0.051 R)
• M13: 18,723,370 km (0.046 R)
• M14: 19,641,004 km (0.117 R)
• M15: 21,814,960 km (0.111 R)
• M16: 26,444,266 km (0.093 R)
• M17: 27,598,563 km (0.067 R)
• M18: 32,443,440 km (0.102 R)
• M19: 34,439,823 km (0.1 R)
• M20: 37,227,131 km (0.068 R)
• M21: 37,826,270 km (0.097 R)
• M22: 42,071,409 km (0.109 R)
• M23: 43,377,847 km (0.087 R)
• M24: 44,846,001 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 343.6

Radius: 5.2

Gravity: 12.71 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 15.18 AU - 15.34 AU

Year: 22700 Days

Day: 16.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 65,781,899 km

• M1: 67,020 km (0.116 R)
• M2: 429,047 km (0.12 R)
• M3: 783,743 km (0.025 R)
• M4: 2,099,157 km (0.081 R)
• M5: 2,341,506 km (0.065 R)
• M6: 2,716,548 km (0.062 R)
• M7: 3,962,997 km (0.062 R)
• M8: 4,207,739 km (0.113 R)
• M9: 4,727,891 km (0.104 R)
• M10: 5,362,934 km (0.101 R)
• M11: 5,662,728 km (0.052 R)
• M12: 6,672,215 km (0.079 R)
• M13: 7,063,263 km (0.08 R)
• M14: 9,093,456 km (0.119 R)
• M15: 9,848,477 km (0.049 R)
• M16: 10,998,435 km (0.097 R)
• M17: 11,238,690 km (0.115 R)
• M18: 12,299,189 km (0.027 R)
• M19: 13,837,953 km (0.117 R)
• M20: 14,545,401 km (0.117 R)
• M21: 15,054,782 km (0.074 R)
• M22: 17,535,414 km (0.083 R)
• M23: 18,616,707 km (0.094 R)
• M24: 19,216,894 km (0.092 R)
• M25: 21,936,134 km (0.111 R)
• M26: 23,585,600 km (0.1 R)
• M27: 24,086,005 km (0.113 R)
• M28: 29,717,467 km (0.067 R)
• M29: 36,698,153 km (0.092 R)
• M30: 42,597,844 km (0.092 R)
• M31: 43,339,700 km (0.119 R)
• M32: 44,696,553 km (0.081 R)
• M33: 45,002,031 km (0.076 R)
• M34: 45,926,397 km (0.105 R)
• M35: 63,829,971 km (0.111 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 19,266 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit