🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.92

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.45 AU - 0.59 AU

Year: 242 Days

Day: 44.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.9

Radius: 8.6

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.66 AU - 0.78 AU

Year: 394 Days

Day: 9 Hours

Environment

Temp: -146 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 25,966,427 km

• M1: 106,962 km (0.092 R)
• M2: 403,914 km (0.089 R)
• M3: 823,835 km (0.104 R)
• M4: 1,341,145 km (0.036 R)
• M5: 1,687,015 km (0.082 R)
• M6: 2,587,894 km (0.082 R)
• M7: 2,960,392 km (0.114 R)
• M8: 3,389,738 km (0.055 R)
• M9: 3,836,886 km (0.107 R)
• M10: 4,222,400 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331

Radius: 12.9

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.15 AU - 1.19 AU

Year: 817 Days

Day: 13.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 25,966,427 km

• M1: 160,369 km (0.118 R)
• M2: 587,022 km (0.116 R)
• M3: 994,975 km (0.079 R)
• M4: 2,205,372 km (0.061 R)
• M5: 2,875,570 km (0.072 R)
• M6: 3,320,774 km (0.09 R)
• M7: 3,963,296 km (0.09 R)
• M8: 4,487,188 km (0.118 R)
• M9: 5,515,823 km (0.113 R)
• M10: 6,596,369 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.9

Radius: 9.4

Gravity: 7.98 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1.46 AU - 2.2 AU

Year: 1598 Days

Day: 9.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,966,427 km

• M1: 116,836 km (0.043 R)
• M2: 454,628 km (0.091 R)
• M3: 815,608 km (0.112 R)
• M4: 1,127,220 km (0.101 R)
• M5: 1,948,363 km (0.11 R)
• M6: 2,355,269 km (0.086 R)
• M7: 4,406,704 km (0.091 R)
• M8: 5,752,786 km (0.065 R)
• M9: 7,381,757 km (0.103 R)
• M10: 7,939,608 km (0.115 R)
• M11: 9,139,682 km (0.104 R)
• M12: 11,746,126 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.1

Radius: 11.2

Gravity: 5.99 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.94 AU - 2.94 AU

Year: 2461 Days

Day: 14.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,966,427 km

• M1: 140,323 km (0.113 R)
• M2: 585,376 km (0.09 R)
• M3: 1,238,970 km (0.119 R)
• M4: 1,692,999 km (0.046 R)
• M5: 2,052,034 km (0.09 R)
• M6: 3,090,243 km (0.111 R)
• M7: 3,783,779 km (0.098 R)
• M8: 4,449,190 km (0.039 R)
• M9: 5,935,296 km (0.078 R)
• M10: 6,442,582 km (0.059 R)
• M11: 7,422,448 km (0.081 R)
• M12: 7,853,888 km (0.12 R)
• M13: 8,733,075 km (0.071 R)
• M14: 10,418,744 km (0.117 R)
• M15: 11,684,192 km (0.047 R)
• M16: 12,184,298 km (0.107 R)
• M17: 13,633,452 km (0.076 R)
• M18: 15,690,273 km (0.111 R)
• M19: 16,871,498 km (0.049 R)
• M20: 18,166,268 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.6

Radius: 14.4

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.5 AU - 4.06 AU

Year: 3836 Days

Day: 10.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,966,427 km

• M1: 179,069 km (0.101 R)
• M2: 1,012,478 km (0.111 R)
• M3: 1,487,152 km (0.085 R)
• M4: 2,208,214 km (0.045 R)
• M5: 3,225,779 km (0.051 R)
• M6: 4,380,375 km (0.116 R)
• M7: 5,201,368 km (0.115 R)
• M8: 6,405,332 km (0.065 R)
• M9: 7,150,479 km (0.085 R)
• M10: 7,625,003 km (0.093 R)
• M11: 8,086,812 km (0.105 R)
• M12: 13,082,783 km (0.034 R)
• M13: 13,892,107 km (0.082 R)
• M14: 14,886,634 km (0.116 R)
• M15: 16,412,382 km (0.098 R)
• M16: 16,906,504 km (0.101 R)
• M17: 19,043,061 km (0.102 R)
• M18: 19,527,758 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 40.5

Radius: 3.3

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 8.45 AU - 8.83 AU

Year: 16398 Days

Day: 24.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 25,966,427 km

• M1: 41,139 km (0.105 R)
• M2: 168,447 km (0.12 R)
• M3: 288,125 km (0.055 R)
• M4: 403,914 km (0.083 R)
• M5: 604,076 km (0.08 R)
• M6: 922,869 km (0.12 R)
• M7: 1,894,059 km (0.079 R)
• M8: 2,564,556 km (0.08 R)
• M9: 2,926,134 km (0.097 R)
• M10: 3,147,539 km (0.087 R)
• M11: 3,602,915 km (0.116 R)
• M12: 5,125,672 km (0.065 R)
• M13: 6,100,900 km (0.082 R)
• M14: 7,768,767 km (0.082 R)
• M15: 7,943,647 km (0.081 R)
• M16: 10,377,155 km (0.088 R)
• M17: 11,511,706 km (0.071 R)
• M18: 13,464,706 km (0.073 R)
• M19: 20,032,052 km (0.119 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: 387 - 19,505 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit