🌌 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: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.44 AU - 0.68 AU

Year: 152 Days

Day: 38.6 Hours

Environment

Temp: 248 °C

Axial Tilt: 34.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.97 AU - 1.01 AU

Year: 358 Days

Day: 20 Hours

Environment

Temp: 43 °C

Axial Tilt: 0 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.63

Radius: 1.85

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.07 AU - 1.71 AU

Year: 596 Days

Day: 47.3 Hours

Environment

Temp: -18 °C

Axial Tilt: 34.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 48,221,062 km

• M1: 506,389 km (0.039 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.06 AU - 2.58 AU

Year: 1284 Days

Day: 35 Hours

Environment

Temp: -74 °C

Axial Tilt: 26.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,221,062 km

• M1: 46,076 km (0.114 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.17 AU - 2.59 AU

Year: 1334 Days

Day: 46.9 Hours

Environment

Temp: -73 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 225.6

Radius: 4.4

Gravity: 11.65 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 15.35 AU - 16.73 AU

Year: 23347 Days

Day: 23.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 48,221,062 km

• M1: 55,052 km (0.092 R)
• M2: 316,100 km (0.077 R)
• M3: 586,124 km (0.095 R)
• M4: 1,706,014 km (0.062 R)
• M5: 2,680,644 km (0.062 R)
• M6: 3,587,507 km (0.083 R)
• M7: 4,335,945 km (0.091 R)
• M8: 4,682,114 km (0.081 R)
• M9: 7,113,828 km (0.104 R)
• M10: 7,461,643 km (0.058 R)
• M11: 9,067,426 km (0.078 R)
• M12: 11,766,621 km (0.072 R)
• M13: 22,789,141 km (0.099 R)
• M14: 24,217,651 km (0.113 R)
• M15: 27,356,813 km (0.117 R)
• M16: 27,887,287 km (0.092 R)
• M17: 33,816,898 km (0.113 R)
• M18: 34,060,443 km (0.077 R)
• M19: 36,432,018 km (0.108 R)
• M20: 42,909,157 km (0.1 R)
• M21: 44,933,366 km (0.094 R)
• M22: 47,628,372 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 111.4

Radius: 6.1

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 15.37 AU - 20.87 AU

Year: 28033 Days

Day: 18.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 48,221,062 km

• M1: 92,152 km (0.098 R)
• M2: 344,823 km (0.097 R)
• M3: 758,611 km (0.11 R)
• M4: 978,220 km (0.071 R)
• M5: 1,761,964 km (0.068 R)
• M6: 3,450,176 km (0.066 R)
• M7: 4,007,129 km (0.119 R)
• M8: 8,209,333 km (0.098 R)
• M9: 8,530,370 km (0.103 R)
• M10: 8,907,506 km (0.094 R)
• M11: 9,847,579 km (0.117 R)
• M12: 10,961,934 km (0.098 R)
• M13: 11,407,586 km (0.092 R)
• M14: 14,940,938 km (0.081 R)
• M15: 16,050,056 km (0.058 R)
• M16: 17,213,180 km (0.11 R)
• M17: 17,891,606 km (0.113 R)
• M18: 21,038,397 km (0.059 R)
• M19: 23,881,056 km (0.103 R)
• M20: 29,774,913 km (0.115 R)
• M21: 30,423,719 km (0.084 R)
• M22: 39,605,438 km (0.119 R)
• M23: 42,260,501 km (0.047 R)
• M24: 47,480,868 km (0.105 R)
• M25: 49,412,476 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 71.1

Radius: 6

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 18.22 AU - 20.8 AU

Year: 31320 Days

Day: 15.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 48,221,062 km

• M1: 124,166 km (0.095 R)
• M2: 495,468 km (0.072 R)
• M3: 715,527 km (0.098 R)
• M4: 980,764 km (0.117 R)
• M5: 1,248,843 km (0.096 R)
• M6: 1,820,606 km (0.105 R)
• M7: 3,929,338 km (0.113 R)
• M8: 4,978,168 km (0.074 R)
• M9: 6,056,919 km (0.086 R)
• M10: 11,002,923 km (0.089 R)
• M11: 14,490,499 km (0.102 R)
• M12: 16,945,250 km (0.083 R)
• M13: 21,884,224 km (0.082 R)

Kuiper Belt

Range: 30.2 - 57.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 248 - 16,235 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit