🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 29.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.54 AU - 0.7 AU

Year: 320 Days

Day: 37.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.98

Radius: 0.99

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.55 AU - 0.71 AU

Year: 328 Days

Day: 40.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 18,949,658 km

• M1: 144,063 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.8

Radius: 9.7

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.86 AU - 0.92 AU

Year: 551 Days

Day: 9.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 18,949,658 km

• M1: 120,725 km (0.099 R)
• M2: 431,440 km (0.078 R)
• M3: 880,383 km (0.105 R)
• M4: 1,208,302 km (0.101 R)
• M5: 1,976,038 km (0.076 R)
• M6: 2,481,081 km (0.105 R)
• M7: 3,344,111 km (0.106 R)
• M8: 3,738,600 km (0.029 R)

Asteroid Belt

Center: 1.29 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.9

Radius: 14.3

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.58 AU - 1.8 AU

Year: 1441 Days

Day: 12.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 18,949,658 km

• M1: 186,100 km (0.105 R)
• M2: 877,691 km (0.086 R)
• M3: 1,602,343 km (0.053 R)
• M4: 2,741,381 km (0.068 R)
• M5: 3,689,682 km (0.106 R)
• M6: 4,496,164 km (0.077 R)
• M7: 5,343,636 km (0.073 R)
• M8: 8,739,807 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.1

Radius: 8

Gravity: 12.74 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 1.58 AU - 2.54 AU

Year: 1940 Days

Day: 5.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 18,949,658 km

• M1: 99,632 km (0.052 R)
• M2: 574,905 km (0.118 R)
• M3: 1,087,876 km (0.081 R)
• M4: 1,560,605 km (0.108 R)
• M5: 2,383,842 km (0.082 R)
• M6: 2,676,007 km (0.106 R)
• M7: 3,332,891 km (0.119 R)
• M8: 3,939,959 km (0.09 R)
• M9: 4,789,226 km (0.07 R)
• M10: 5,188,353 km (0.083 R)
• M11: 6,708,717 km (0.097 R)
• M12: 7,468,524 km (0.042 R)
• M13: 8,159,816 km (0.069 R)
• M14: 8,827,621 km (0.109 R)
• M15: 9,809,132 km (0.045 R)
• M16: 10,564,003 km (0.093 R)
• M17: 10,899,102 km (0.1 R)
• M18: 11,318,425 km (0.036 R)
• M19: 15,162,941 km (0.087 R)
• M20: 16,220,299 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398.2

Radius: 14.8

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.68 AU - 2.5 AU

Year: 1982 Days

Day: 5 Hours

Environment

Temp: -183 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 18,949,658 km

• M1: 184,005 km (0.106 R)
• M2: 749,485 km (0.082 R)
• M3: 1,235,828 km (0.112 R)
• M4: 1,840,951 km (0.073 R)
• M5: 2,655,512 km (0.032 R)
• M6: 3,125,548 km (0.11 R)
• M7: 3,635,378 km (0.094 R)
• M8: 4,182,906 km (0.113 R)
• M9: 5,620,242 km (0.068 R)
• M10: 6,261,120 km (0.116 R)
• M11: 7,078,522 km (0.095 R)
• M12: 7,580,872 km (0.084 R)
• M13: 10,596,466 km (0.105 R)
• M14: 11,433,765 km (0.092 R)
• M15: 12,465,841 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.7

Radius: 14.1

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 3.36 AU - 4.84 AU

Year: 5446 Days

Day: 7.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 18,949,658 km

• M1: 180,565 km (0.079 R)
• M2: 1,189,303 km (0.101 R)
• M3: 2,200,136 km (0.108 R)
• M4: 2,680,495 km (0.067 R)
• M5: 4,825,279 km (0.107 R)
• M6: 6,236,286 km (0.094 R)
• M7: 7,783,128 km (0.065 R)
• M8: 9,644,276 km (0.109 R)
• M9: 10,794,234 km (0.103 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 19,673 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit