🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.64 AU - 0.94 AU

Year: 259 Days

Day: 25.5 Hours

Environment

Temp: 161 °C

Axial Tilt: 18.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.75

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.77 AU - 1.13 AU

Year: 342 Days

Day: 45.4 Hours

Environment

Temp: 38 °C

Axial Tilt: 17.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.64

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.18 AU - 1.24 AU

Year: 491 Days

Day: 13.9 Hours

Environment

Temp: -9 °C

Axial Tilt: 13.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 94,802,156 km

• M1: 31,266 km (0.091 R)

Asteroid Belt

Center: 2.89 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Terrestrial

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 3.78 AU - 5.34 AU

Year: 3593 Days

Day: 47 Hours

Environment

Temp: -128 °C

Axial Tilt: 0.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.9

Radius: 12.7

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 4.68 AU - 5.22 AU

Year: 4063 Days

Day: 11.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 94,802,156 km

• M1: 157,975 km (0.092 R)
• M2: 604,226 km (0.059 R)
• M3: 1,681,330 km (0.075 R)
• M4: 3,187,631 km (0.117 R)
• M5: 3,809,959 km (0.1 R)
• M6: 4,328,914 km (0.081 R)
• M7: 5,247,445 km (0.098 R)
• M8: 6,262,616 km (0.093 R)
• M9: 6,863,550 km (0.105 R)
• M10: 7,568,904 km (0.093 R)
• M11: 9,162,122 km (0.053 R)
• M12: 12,069,706 km (0.106 R)
• M13: 12,623,667 km (0.104 R)
• M14: 14,801,363 km (0.116 R)
• M15: 17,685,460 km (0.075 R)
• M16: 18,220,123 km (0.071 R)
• M17: 19,825,757 km (0.105 R)
• M18: 22,408,115 km (0.098 R)
• M19: 23,529,800 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.8

Radius: 8.6

Gravity: 10.33 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 4.5 AU - 5.68 AU

Year: 4237 Days

Day: 6.5 Hours

Environment

Temp: -142 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 94,802,156 km

• M1: 107,112 km (0.089 R)
• M2: 620,831 km (0.088 R)
• M3: 947,104 km (0.078 R)
• M4: 1,356,553 km (0.067 R)
• M5: 2,470,160 km (0.093 R)
• M6: 3,474,261 km (0.081 R)
• M7: 3,834,044 km (0.075 R)
• M8: 4,148,798 km (0.067 R)
• M9: 4,653,541 km (0.026 R)
• M10: 5,613,511 km (0.111 R)
• M11: 5,961,176 km (0.095 R)
• M12: 6,447,070 km (0.12 R)
• M13: 8,774,065 km (0.105 R)
• M14: 9,443,515 km (0.037 R)
• M15: 10,359,802 km (0.067 R)
• M16: 11,243,178 km (0.113 R)
• M17: 11,890,936 km (0.107 R)
• M18: 14,461,925 km (0.093 R)
• M19: 15,116,865 km (0.109 R)
• M20: 25,757,911 km (0.094 R)
• M21: 26,477,178 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 815.2

Radius: 5.6

Gravity: 25.99 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 16.15 AU - 17.53 AU

Year: 25497 Days

Day: 15.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 94,802,156 km

• M1: 73,752 km (0.088 R)
• M2: 302,786 km (0.067 R)
• M3: 502,948 km (0.04 R)
• M4: 689,048 km (0.072 R)
• M5: 1,207,255 km (0.119 R)
• M6: 1,497,175 km (0.097 R)
• M7: 1,913,656 km (0.11 R)
• M8: 2,428,273 km (0.12 R)
• M9: 3,599,325 km (0.093 R)
• M10: 5,775,974 km (0.118 R)
• M11: 8,417,573 km (0.092 R)
• M12: 9,472,088 km (0.088 R)
• M13: 11,982,341 km (0.114 R)
• M14: 12,562,182 km (0.1 R)
• M15: 15,069,592 km (0.051 R)
• M16: 18,457,684 km (0.118 R)
• M17: 24,555,593 km (0.069 R)
• M18: 29,464,049 km (0.082 R)
• M19: 40,516,489 km (0.065 R)
• M20: 42,314,955 km (0.068 R)
• M21: 42,982,011 km (0.103 R)
• M22: 44,166,079 km (0.085 R)
• M23: 54,628,954 km (0.099 R)
• M24: 62,882,567 km (0.112 R)
• M25: 63,315,653 km (0.118 R)
• M26: 64,847,535 km (0.109 R)
• M27: 65,511,600 km (0.096 R)
• M28: 67,530,723 km (0.045 R)
• M29: 68,899,693 km (0.048 R)
• M30: 70,520,137 km (0.114 R)
• M31: 74,077,574 km (0.104 R)
• M32: 77,255,781 km (0.079 R)
• M33: 79,761,695 km (0.109 R)
• M34: 82,062,810 km (0.105 R)
• M35: 85,729,753 km (0.113 R)
• M36: 91,988,479 km (0.12 R)
• M37: 92,826,676 km (0.088 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 290 - 13,366 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit