🌌 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: 1

Radius: 1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 37.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.1

Radius: 14.3

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.87 AU - 1.17 AU

Year: 665 Days

Day: 5.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 20,876,013 km

• M1: 177,872 km (0.059 R)
• M2: 658,380 km (0.044 R)
• M3: 1,226,403 km (0.116 R)
• M4: 1,914,853 km (0.116 R)
• M5: 2,786,410 km (0.099 R)
• M6: 3,314,490 km (0.085 R)
• M7: 4,360,180 km (0.105 R)
• M8: 4,944,060 km (0.119 R)
• M9: 5,526,445 km (0.08 R)
• M10: 6,585,747 km (0.119 R)
• M11: 7,422,448 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.6

Radius: 14.7

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.99 AU - 1.37 AU

Year: 828 Days

Day: 10.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 176.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 20,876,013 km

• M1: 182,809 km (0.066 R)
• M2: 802,293 km (0.101 R)
• M3: 1,373,308 km (0.087 R)
• M4: 2,003,714 km (0.071 R)
• M5: 2,480,632 km (0.12 R)
• M6: 3,021,578 km (0.101 R)
• M7: 3,485,780 km (0.115 R)
• M8: 4,137,728 km (0.086 R)
• M9: 4,994,624 km (0.111 R)
• M10: 5,629,517 km (0.083 R)
• M11: 6,109,876 km (0.083 R)
• M12: 6,683,135 km (0.105 R)
• M13: 8,700,313 km (0.087 R)
• M14: 9,372,456 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.5

Radius: 12.3

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.52 AU - 1.84 AU

Year: 1406 Days

Day: 7.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 20,876,013 km

• M1: 153,039 km (0.096 R)
• M2: 553,363 km (0.105 R)
• M3: 1,061,247 km (0.072 R)
• M4: 2,196,546 km (0.076 R)
• M5: 4,198,464 km (0.069 R)
• M6: 5,993,938 km (0.08 R)
• M7: 7,232,907 km (0.077 R)
• M8: 7,663,450 km (0.091 R)
• M9: 8,517,205 km (0.094 R)
• M10: 10,618,158 km (0.069 R)
• M11: 11,034,489 km (0.109 R)
• M12: 12,771,021 km (0.08 R)
• M13: 13,281,897 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261

Radius: 12.9

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.64 AU - 2.5 AU

Year: 1923 Days

Day: 5.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 20,876,013 km

• M1: 160,519 km (0.045 R)
• M2: 633,248 km (0.12 R)
• M3: 1,106,725 km (0.078 R)
• M4: 1,630,766 km (0.11 R)
• M5: 2,039,169 km (0.112 R)
• M6: 2,505,166 km (0.064 R)
• M7: 3,056,135 km (0.033 R)
• M8: 3,609,497 km (0.105 R)
• M9: 4,026,127 km (0.1 R)
• M10: 4,510,974 km (0.118 R)
• M11: 4,938,375 km (0.108 R)
• M12: 5,474,684 km (0.05 R)
• M13: 6,227,610 km (0.074 R)
• M14: 6,878,809 km (0.083 R)
• M15: 8,455,421 km (0.1 R)
• M16: 11,104,201 km (0.039 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506.1

Radius: 12.7

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.15 AU - 3.51 AU

Year: 3074 Days

Day: 9 Hours

Environment

Temp: -197 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 20,876,013 km

• M1: 157,975 km (0.106 R)
• M2: 735,573 km (0.075 R)
• M3: 1,133,653 km (0.096 R)
• M4: 1,682,228 km (0.073 R)
• M5: 2,101,252 km (0.109 R)
• M6: 2,694,407 km (0.063 R)
• M7: 3,172,971 km (0.073 R)
• M8: 3,596,333 km (0.111 R)
• M9: 4,017,750 km (0.082 R)
• M10: 5,007,190 km (0.101 R)
• M11: 5,863,937 km (0.103 R)
• M12: 6,902,296 km (0.099 R)
• M13: 7,314,588 km (0.105 R)
• M14: 7,774,452 km (0.11 R)
• M15: 9,026,885 km (0.049 R)
• M16: 10,144,830 km (0.097 R)
• M17: 12,309,661 km (0.082 R)
• M18: 13,867,723 km (0.088 R)
• M19: 15,653,772 km (0.071 R)
• M20: 16,838,587 km (0.12 R)
• M21: 19,097,814 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.4

Radius: 8.9

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 3.62 AU - 3.88 AU

Year: 4689 Days

Day: 12.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 20,876,013 km

• M1: 110,702 km (0.103 R)
• M2: 412,292 km (0.029 R)
• M3: 1,153,998 km (0.089 R)
• M4: 1,520,962 km (0.12 R)
• M5: 2,028,248 km (0.108 R)
• M6: 2,308,146 km (0.099 R)
• M7: 2,706,375 km (0.117 R)
• M8: 4,289,270 km (0.063 R)
• M9: 4,870,458 km (0.115 R)
• M10: 6,582,456 km (0.107 R)
• M11: 7,233,207 km (0.111 R)
• M12: 7,829,055 km (0.099 R)
• M13: 8,697,022 km (0.119 R)
• M14: 10,194,048 km (0.091 R)
• M15: 10,983,476 km (0.11 R)
• M16: 12,330,604 km (0.094 R)
• M17: 13,272,622 km (0.085 R)
• M18: 13,784,696 km (0.055 R)
• M19: 14,261,614 km (0.096 R)
• M20: 16,492,268 km (0.088 R)
• M21: 16,975,618 km (0.109 R)
• M22: 17,468,394 km (0.054 R)
• M23: 17,802,147 km (0.04 R)
• M24: 19,180,093 km (0.058 R)
• M25: 19,535,388 km (0.107 R)
• M26: 20,689,685 km (0.091 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 294 - 15,248 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit