🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.48 AU - 0.62 AU

Year: 259 Days

Day: 19 Hours

Environment

Temp: -115 °C

Axial Tilt: 12.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 27,885,188 km

• M1: 50,564 km (0.068 R)
• M2: 153,487 km (0.114 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.54 AU - 0.6 AU

Year: 274 Days

Day: 19.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 3.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.46 AU - 0.74 AU

Year: 296 Days

Day: 27.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 27,885,188 km

• M1: 747,840 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.4

Radius: 8.9

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.14 AU - 1.38 AU

Year: 899 Days

Day: 9 Hours

Environment

Temp: -177 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,885,188 km

• M1: 111,002 km (0.104 R)
• M2: 553,063 km (0.059 R)
• M3: 1,700,778 km (0.043 R)
• M4: 2,013,887 km (0.111 R)
• M5: 2,412,266 km (0.094 R)
• M6: 3,239,542 km (0.025 R)
• M7: 4,012,364 km (0.057 R)
• M8: 5,121,184 km (0.104 R)
• M9: 5,902,234 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825

Radius: 12.7

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.47 AU - 1.77 AU

Year: 1311 Days

Day: 7 Hours

Environment

Temp: -185 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,885,188 km

• M1: 157,975 km (0.107 R)
• M2: 629,508 km (0.116 R)
• M3: 1,028,186 km (0.064 R)
• M4: 1,482,216 km (0.114 R)
• M5: 2,018,075 km (0.105 R)
• M6: 3,109,392 km (0.093 R)
• M7: 3,534,848 km (0.095 R)
• M8: 4,051,260 km (0.113 R)
• M9: 4,772,621 km (0.082 R)
• M10: 5,448,504 km (0.111 R)
• M11: 6,071,280 km (0.107 R)
• M12: 7,017,337 km (0.113 R)
• M13: 8,003,336 km (0.109 R)
• M14: 9,355,701 km (0.107 R)
• M15: 11,096,572 km (0.046 R)
• M16: 11,590,544 km (0.112 R)
• M17: 12,471,526 km (0.079 R)
• M18: 13,083,231 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 349.1

Radius: 9.4

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.44 AU - 3.58 AU

Year: 3320 Days

Day: 11.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,885,188 km

• M1: 176,077 km (0.042 R)
• M2: 599,588 km (0.043 R)
• M3: 1,025,942 km (0.111 R)
• M4: 1,517,222 km (0.059 R)
• M5: 3,477,403 km (0.119 R)
• M6: 10,101,447 km (0.039 R)
• M7: 11,319,622 km (0.08 R)
• M8: 11,923,249 km (0.077 R)
• M9: 12,847,166 km (0.111 R)
• M10: 16,306,617 km (0.102 R)
• M11: 16,868,955 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.4

Radius: 11.2

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.95 AU - 3.69 AU

Year: 3846 Days

Day: 8.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 91.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 27,885,188 km

• M1: 139,425 km (0.098 R)
• M2: 779,405 km (0.102 R)
• M3: 1,319,453 km (0.091 R)
• M4: 1,893,161 km (0.061 R)
• M5: 2,400,597 km (0.096 R)
• M6: 3,015,893 km (0.108 R)
• M7: 3,952,376 km (0.099 R)
• M8: 5,397,491 km (0.08 R)
• M9: 5,999,174 km (0.106 R)
• M10: 6,581,708 km (0.101 R)
• M11: 6,935,956 km (0.087 R)
• M12: 8,149,194 km (0.078 R)
• M13: 9,020,153 km (0.085 R)
• M14: 11,491,959 km (0.082 R)
• M15: 13,802,049 km (0.09 R)
• M16: 14,928,072 km (0.05 R)
• M17: 16,347,307 km (0.106 R)
• M18: 17,669,005 km (0.032 R)
• M19: 18,546,396 km (0.067 R)
• M20: 21,989,541 km (0.099 R)
• M21: 22,857,657 km (0.101 R)
• M22: 25,678,475 km (0.109 R)
• M23: 27,049,240 km (0.095 R)
• M24: 27,794,387 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.3

Radius: 8.7

Gravity: 5.35 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.88 AU - 4.82 AU

Year: 5769 Days

Day: 12.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 45.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 27,885,188 km

• M1: 109,206 km (0.114 R)
• M2: 521,648 km (0.096 R)
• M3: 1,133,952 km (0.116 R)
• M4: 2,022,563 km (0.118 R)
• M5: 3,902,260 km (0.108 R)
• M6: 5,471,991 km (0.104 R)
• M7: 5,900,439 km (0.059 R)
• M8: 8,462,452 km (0.067 R)
• M9: 8,765,388 km (0.115 R)
• M10: 10,913,913 km (0.111 R)
• M11: 16,163,601 km (0.035 R)
• M12: 17,046,677 km (0.079 R)
• M13: 18,652,910 km (0.064 R)
• M14: 20,833,747 km (0.053 R)
• M15: 22,306,987 km (0.116 R)
• M16: 25,147,103 km (0.092 R)
• M17: 26,171,699 km (0.103 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 345 - 12,714 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit