🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.54 AU - 0.76 AU

Year: 184 Days

Day: 43.3 Hours

Environment

Temp: 198 °C

Axial Tilt: 17.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.84 AU - 1.1 AU

Year: 336 Days

Day: 19.9 Hours

Environment

Temp: 95 °C

Axial Tilt: 33.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.61 AU - 2.65 AU

Year: 1093 Days

Day: 20 Hours

Environment

Temp: -60 °C

Axial Tilt: 22.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.58 AU - 2.76 AU

Year: 1533 Days

Day: 28.5 Hours

Environment

Temp: -80 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.24

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.24 AU - 3.28 AU

Year: 1612 Days

Day: 28.6 Hours

Environment

Temp: -87 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 77,091,984 km

• M1: 30,368 km (0.117 R)
• M2: 176,675 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505

Radius: 10.9

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 4.92 AU - 6.48 AU

Year: 4783 Days

Day: 7.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 87.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,091,984 km

• M1: 135,685 km (0.051 R)
• M2: 532,568 km (0.046 R)
• M3: 875,746 km (0.071 R)
• M4: 1,481,019 km (0.093 R)
• M5: 2,683,337 km (0.096 R)
• M6: 4,057,992 km (0.109 R)
• M7: 4,837,247 km (0.089 R)
• M8: 5,302,796 km (0.054 R)
• M9: 6,028,046 km (0.109 R)
• M10: 7,205,381 km (0.109 R)
• M11: 7,848,802 km (0.101 R)
• M12: 8,202,601 km (0.098 R)
• M13: 10,010,641 km (0.042 R)
• M14: 11,474,456 km (0.075 R)
• M15: 12,494,863 km (0.077 R)
• M16: 13,125,717 km (0.113 R)
• M17: 13,931,003 km (0.104 R)
• M18: 15,309,696 km (0.111 R)
• M19: 16,777,102 km (0.109 R)
• M20: 19,278,678 km (0.084 R)
• M21: 21,123,519 km (0.052 R)
• M22: 21,602,681 km (0.082 R)
• M23: 22,440,728 km (0.072 R)
• M24: 24,181,748 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.9

Radius: 10.7

Gravity: 7.27 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 4.71 AU - 7.01 AU

Year: 4986 Days

Day: 9.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 77,091,984 km

• M1: 132,993 km (0.101 R)
• M2: 1,337,405 km (0.101 R)
• M3: 2,439,343 km (0.035 R)
• M4: 3,544,572 km (0.031 R)
• M5: 3,948,187 km (0.073 R)
• M6: 4,611,504 km (0.059 R)
• M7: 4,983,703 km (0.105 R)
• M8: 5,728,701 km (0.099 R)
• M9: 6,415,804 km (0.105 R)
• M10: 8,181,358 km (0.07 R)
• M11: 8,769,128 km (0.078 R)
• M12: 9,135,044 km (0.062 R)
• M13: 9,468,947 km (0.084 R)
• M14: 10,250,297 km (0.111 R)
• M15: 12,956,971 km (0.09 R)
• M16: 15,044,609 km (0.07 R)
• M17: 15,987,375 km (0.087 R)
• M18: 17,925,415 km (0.108 R)
• M19: 20,794,403 km (0.07 R)
• M20: 24,432,773 km (0.03 R)
• M21: 25,900,179 km (0.097 R)
• M22: 27,253,142 km (0.081 R)
• M23: 29,279,744 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 507.1

Radius: 6.2

Gravity: 13.19 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 14.9 AU - 18.24 AU

Year: 23706 Days

Day: 16.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 77,091,984 km

• M1: 78,090 km (0.096 R)
• M2: 283,937 km (0.066 R)
• M3: 780,153 km (0.118 R)
• M4: 1,089,372 km (0.071 R)
• M5: 1,399,787 km (0.096 R)
• M6: 1,897,799 km (0.11 R)
• M7: 3,640,464 km (0.115 R)
• M8: 3,946,541 km (0.051 R)
• M9: 6,682,387 km (0.098 R)
• M10: 7,379,513 km (0.055 R)
• M11: 7,573,392 km (0.06 R)
• M12: 8,541,141 km (0.081 R)
• M13: 9,082,536 km (0.115 R)
• M14: 10,843,602 km (0.106 R)
• M15: 11,157,907 km (0.036 R)
• M16: 13,243,152 km (0.102 R)
• M17: 16,218,204 km (0.058 R)
• M18: 24,831,152 km (0.069 R)
• M19: 25,048,667 km (0.092 R)
• M20: 26,720,274 km (0.062 R)
• M21: 29,425,752 km (0.043 R)
• M22: 29,914,189 km (0.101 R)
• M23: 34,018,406 km (0.112 R)
• M24: 34,691,896 km (0.107 R)
• M25: 37,048,062 km (0.12 R)
• M26: 39,360,995 km (0.044 R)
• M27: 41,005,973 km (0.061 R)
• M28: 46,709,242 km (0.116 R)
• M29: 52,919,200 km (0.106 R)
• M30: 53,279,581 km (0.106 R)
• M31: 59,075,152 km (0.047 R)
• M32: 65,070,586 km (0.072 R)
• M33: 76,171,496 km (0.034 R)

Kuiper Belt

Range: 31.2 - 46.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 494 - 13,921 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit