🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.49 AU - 0.71 AU

Year: 296 Days

Day: 15.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 23,638,359 km

• M1: 203,752 km (0.074 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.2

Radius: 12.8

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.74 AU - 0.74 AU

Year: 405 Days

Day: 11.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 23,638,359 km

• M1: 159,172 km (0.056 R)
• M2: 560,244 km (0.102 R)
• M3: 1,101,340 km (0.096 R)
• M4: 2,266,557 km (0.115 R)
• M5: 4,694,680 km (0.072 R)
• M6: 5,118,192 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720

Radius: 12.7

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.65 AU - 0.89 AU

Year: 430 Days

Day: 13.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 23,638,359 km

• M1: 157,975 km (0.045 R)
• M2: 598,391 km (0.105 R)
• M3: 1,024,446 km (0.079 R)
• M4: 1,427,762 km (0.093 R)
• M5: 1,939,985 km (0.057 R)
• M6: 2,357,513 km (0.101 R)
• M7: 3,060,324 km (0.119 R)
• M8: 3,682,052 km (0.103 R)
• M9: 5,291,127 km (0.063 R)
• M10: 5,771,037 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803

Radius: 14.3

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.75 AU - 1.75 AU

Year: 1472 Days

Day: 10.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 23,638,359 km

• M1: 177,872 km (0.089 R)
• M2: 724,652 km (0.072 R)
• M3: 1,948,363 km (0.104 R)
• M4: 2,767,860 km (0.096 R)
• M5: 3,212,913 km (0.087 R)
• M6: 3,756,851 km (0.08 R)
• M7: 4,232,273 km (0.047 R)
• M8: 5,135,994 km (0.038 R)
• M9: 6,023,409 km (0.098 R)
• M10: 6,830,639 km (0.111 R)
• M11: 7,764,578 km (0.053 R)
• M12: 8,721,406 km (0.108 R)
• M13: 9,690,800 km (0.037 R)
• M14: 10,455,395 km (0.082 R)
• M15: 11,010,852 km (0.069 R)
• M16: 11,476,550 km (0.093 R)
• M17: 12,332,998 km (0.103 R)

Asteroid Belt

Center: 2.14 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 789.2

Radius: 11.6

Gravity: 5.87 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.92 AU - 3.14 AU

Year: 2559 Days

Day: 12.1 Hours

Environment

Temp: -200 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 23,638,359 km

• M1: 144,212 km (0.116 R)
• M2: 522,695 km (0.105 R)
• M3: 1,440,927 km (0.118 R)
• M4: 2,127,132 km (0.107 R)
• M5: 2,568,296 km (0.096 R)
• M6: 3,053,891 km (0.047 R)
• M7: 3,544,722 km (0.06 R)
• M8: 3,947,140 km (0.093 R)
• M9: 5,366,225 km (0.082 R)
• M10: 6,865,495 km (0.067 R)
• M11: 7,250,261 km (0.083 R)
• M12: 8,661,268 km (0.101 R)
• M13: 10,058,362 km (0.058 R)
• M14: 10,633,865 km (0.103 R)
• M15: 11,271,751 km (0.044 R)
• M16: 12,362,768 km (0.059 R)
• M17: 13,068,421 km (0.077 R)
• M18: 13,847,377 km (0.053 R)
• M19: 14,705,471 km (0.117 R)
• M20: 15,297,130 km (0.052 R)
• M21: 16,214,165 km (0.089 R)
• M22: 17,768,337 km (0.069 R)
• M23: 18,213,990 km (0.095 R)
• M24: 19,655,066 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421

Radius: 11.1

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.57 AU - 2.85 AU

Year: 2837 Days

Day: 11.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 23,638,359 km

• M1: 138,976 km (0.037 R)
• M2: 489,335 km (0.053 R)
• M3: 1,246,898 km (0.102 R)
• M4: 1,665,922 km (0.12 R)
• M5: 2,635,166 km (0.055 R)
• M6: 3,336,781 km (0.105 R)
• M7: 3,815,045 km (0.11 R)
• M8: 4,178,568 km (0.07 R)
• M9: 6,412,064 km (0.085 R)
• M10: 7,502,184 km (0.097 R)
• M11: 7,861,219 km (0.067 R)
• M12: 8,389,748 km (0.099 R)
• M13: 8,875,791 km (0.11 R)
• M14: 9,312,019 km (0.094 R)
• M15: 10,895,811 km (0.095 R)
• M16: 11,592,937 km (0.074 R)
• M17: 12,610,353 km (0.12 R)
• M18: 13,597,998 km (0.108 R)
• M19: 14,178,587 km (0.098 R)
• M20: 15,437,303 km (0.053 R)
• M21: 16,466,686 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.3

Radius: 12.8

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 3.74 AU - 3.84 AU

Year: 4691 Days

Day: 10.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 61.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 23,638,359 km

• M1: 183,407 km (0.053 R)
• M2: 879,187 km (0.105 R)
• M3: 2,707,422 km (0.035 R)
• M4: 3,576,137 km (0.104 R)
• M5: 4,023,136 km (0.12 R)
• M6: 4,439,018 km (0.094 R)
• M7: 4,981,310 km (0.083 R)
• M8: 12,683,207 km (0.06 R)
• M9: 13,877,596 km (0.113 R)
• M10: 14,578,312 km (0.07 R)
• M11: 19,910,579 km (0.089 R)
• M12: 22,803,203 km (0.067 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 11,484 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit