🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.47 AU - 0.63 AU

Year: 156 Days

Day: 47.3 Hours

Environment

Temp: 150 °C

Axial Tilt: 7.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.1

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.81 AU - 1.01 AU

Year: 332 Days

Day: 35.3 Hours

Environment

Temp: 20 °C

Axial Tilt: 42.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 69,365,449 km

• M1: 42,037 km (0.116 R)
• M2: 324,328 km (0.068 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.19 AU - 1.23 AU

Year: 510 Days

Day: 22.8 Hours

Environment

Temp: -24 °C

Axial Tilt: 37.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.68 AU - 1.92 AU

Year: 925 Days

Day: 42.6 Hours

Environment

Temp: -81 °C

Axial Tilt: 20.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.06 AU - 2.84 AU

Year: 1468 Days

Day: 37 Hours

Environment

Temp: -100 °C

Axial Tilt: 33.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,365,449 km

• M1: 87,664 km (0.106 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 2.05 AU - 3.07 AU

Year: 1568 Days

Day: 15.3 Hours

Environment

Temp: -105 °C

Axial Tilt: 1.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 3.12 AU - 4.1 AU

Year: 2626 Days

Day: 14.9 Hours

Environment

Temp: -118 °C

Axial Tilt: 6.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,365,449 km

• M1: 43,832 km (0.105 R)

Planet 8 - Terrestrial

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 3.15 AU - 4.95 AU

Year: 3121 Days

Day: 22.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 79.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,365,449 km

• M1: 241,451 km (0.045 R)

Asteroid Belt

Center: 6.11 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.4

Radius: 14

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 7.83 AU - 8.51 AU

Year: 8941 Days

Day: 14.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 69,365,449 km

• M1: 174,132 km (0.099 R)
• M2: 723,754 km (0.069 R)
• M3: 1,179,579 km (0.067 R)
• M4: 1,711,250 km (0.108 R)
• M5: 2,679,148 km (0.117 R)
• M6: 4,283,286 km (0.1 R)
• M7: 5,027,236 km (0.101 R)
• M8: 5,542,003 km (0.1 R)
• M9: 6,488,957 km (0.113 R)
• M10: 7,335,681 km (0.12 R)
• M11: 8,145,155 km (0.085 R)
• M12: 9,209,993 km (0.049 R)
• M13: 9,652,952 km (0.092 R)
• M14: 10,152,459 km (0.048 R)
• M15: 10,978,689 km (0.07 R)
• M16: 11,477,298 km (0.117 R)
• M17: 13,780,657 km (0.098 R)
• M18: 16,553,453 km (0.09 R)
• M19: 19,613,478 km (0.053 R)
• M20: 20,758,051 km (0.063 R)
• M21: 22,304,743 km (0.1 R)
• M22: 24,844,317 km (0.1 R)
• M23: 27,904,790 km (0.083 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 291.3

Radius: 6.2

Gravity: 7.58 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 14.89 AU - 18.99 AU

Year: 26696 Days

Day: 20.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 69,365,449 km

• M1: 77,342 km (0.033 R)
• M2: 474,524 km (0.095 R)
• M3: 835,205 km (0.06 R)
• M4: 2,326,396 km (0.093 R)
• M5: 2,728,964 km (0.074 R)
• M6: 3,256,297 km (0.114 R)
• M7: 3,879,073 km (0.067 R)
• M8: 4,958,122 km (0.066 R)
• M9: 5,471,542 km (0.108 R)
• M10: 6,733,699 km (0.093 R)
• M11: 7,502,932 km (0.114 R)
• M12: 9,707,555 km (0.12 R)
• M13: 10,806,651 km (0.059 R)
• M14: 14,020,013 km (0.094 R)
• M15: 15,043,412 km (0.037 R)
• M16: 15,420,698 km (0.091 R)
• M17: 19,193,407 km (0.043 R)
• M18: 27,142,439 km (0.112 R)
• M19: 28,268,313 km (0.087 R)
• M20: 29,308,168 km (0.066 R)
• M21: 31,341,203 km (0.119 R)
• M22: 33,851,305 km (0.091 R)
• M23: 41,291,406 km (0.074 R)
• M24: 46,494,869 km (0.119 R)
• M25: 51,095,153 km (0.085 R)
• M26: 51,605,281 km (0.115 R)
• M27: 52,808,946 km (0.099 R)
• M28: 63,510,430 km (0.099 R)
• M29: 69,365,391 km (0.056 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 337 - 19,925 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit