🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.52 AU - 0.76 AU

Year: 189 Days

Day: 43.2 Hours

Environment

Temp: 170 °C

Axial Tilt: 35 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.81 AU - 1.31 AU

Year: 403 Days

Day: 22.8 Hours

Environment

Temp: 16 °C

Axial Tilt: 34.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 97,102,749 km

• M1: 332,855 km (0.098 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1 AU - 1.22 AU

Year: 431 Days

Day: 28.1 Hours

Environment

Temp: -1 °C

Axial Tilt: 4.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.98 AU - 1.62 AU

Year: 547 Days

Day: 28.5 Hours

Environment

Temp: 5 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.5 AU - 1.72 AU

Year: 754 Days

Day: 37.1 Hours

Environment

Temp: -56 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 97,102,749 km

• M1: 199,115 km (0.096 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.65 AU - 1.91 AU

Year: 876 Days

Day: 22.7 Hours

Environment

Temp: -67 °C

Axial Tilt: 25 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.34 AU - 3.76 AU

Year: 2468 Days

Day: 43.2 Hours

Environment

Temp: -108 °C

Axial Tilt: 24.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 3.19 AU - 5.23 AU

Year: 3187 Days

Day: 44.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.79 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.7

Radius: 8.4

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.27 AU - 5.45 AU

Year: 4579 Days

Day: 9.3 Hours

Environment

Temp: -135 °C

Axial Tilt: 59.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 97,102,749 km

• M1: 104,419 km (0.087 R)
• M2: 398,230 km (0.054 R)
• M3: 968,048 km (0.119 R)
• M4: 1,235,828 km (0.103 R)
• M5: 1,668,166 km (0.093 R)
• M6: 1,986,061 km (0.032 R)
• M7: 2,655,961 km (0.068 R)
• M8: 3,225,779 km (0.034 R)
• M9: 3,539,934 km (0.111 R)
• M10: 5,007,490 km (0.048 R)
• M11: 8,099,378 km (0.091 R)
• M12: 8,916,781 km (0.09 R)
• M13: 9,258,762 km (0.047 R)
• M14: 11,219,541 km (0.073 R)
• M15: 12,318,188 km (0.094 R)
• M16: 16,244,384 km (0.11 R)
• M17: 17,118,933 km (0.107 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 876

Radius: 5

Gravity: 35.04 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 13.64 AU - 20.04 AU

Year: 25497 Days

Day: 16.5 Hours

Environment

Temp: -188 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 97,102,749 km

• M1: 65,973 km (0.045 R)
• M2: 270,473 km (0.099 R)
• M3: 490,232 km (0.114 R)
• M4: 792,869 km (0.063 R)
• M5: 1,227,600 km (0.055 R)
• M6: 1,807,441 km (0.116 R)
• M7: 2,169,618 km (0.118 R)
• M8: 2,870,035 km (0.063 R)
• M9: 3,037,884 km (0.1 R)
• M10: 3,271,855 km (0.119 R)
• M11: 3,910,040 km (0.07 R)
• M12: 4,742,253 km (0.052 R)
• M13: 7,723,888 km (0.094 R)
• M14: 8,846,171 km (0.119 R)
• M15: 12,338,384 km (0.033 R)
• M16: 13,086,672 km (0.113 R)
• M17: 14,265,354 km (0.102 R)
• M18: 15,427,580 km (0.092 R)
• M19: 15,598,720 km (0.088 R)
• M20: 17,844,932 km (0.111 R)
• M21: 18,414,451 km (0.107 R)
• M22: 19,891,131 km (0.072 R)
• M23: 22,744,860 km (0.096 R)
• M24: 27,082,600 km (0.093 R)
• M25: 30,574,813 km (0.118 R)
• M26: 39,545,000 km (0.05 R)
• M27: 42,997,869 km (0.101 R)
• M28: 46,290,368 km (0.104 R)
• M29: 49,375,226 km (0.053 R)
• M30: 60,078,954 km (0.093 R)
• M31: 68,012,578 km (0.051 R)
• M32: 68,472,741 km (0.085 R)
• M33: 69,632,274 km (0.045 R)
• M34: 69,865,646 km (0.066 R)
• M35: 71,752,225 km (0.039 R)
• M36: 76,120,333 km (0.099 R)
• M37: 81,695,846 km (0.108 R)
• M38: 88,081,730 km (0.037 R)
• M39: 95,079,171 km (0.059 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 16,513 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit