🌌 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: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.54 AU - 0.56 AU

Year: 152 Days

Day: 23.7 Hours

Environment

Temp: 184 °C

Axial Tilt: 29.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.46

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.55 AU - 0.59 AU

Year: 160 Days

Day: 37 Hours

Environment

Temp: 180 °C

Axial Tilt: 8.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.79 AU - 0.95 AU

Year: 303 Days

Day: 42.8 Hours

Environment

Temp: 86 °C

Axial Tilt: 14.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 35,436,640 km

• M1: 38,596 km (0.04 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.88 AU - 1.24 AU

Year: 407 Days

Day: 29.7 Hours

Environment

Temp: 28 °C

Axial Tilt: 5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 2.96 AU - 3.46 AU

Year: 2144 Days

Day: 30.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 149.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.53 AU - 3.89 AU

Year: 2144 Days

Day: 34.8 Hours

Environment

Temp: -109 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,436,640 km

• M1: 169,943 km (0.051 R)

Asteroid Belt

Center: 5.47 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.5

Radius: 14.9

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 7.52 AU - 7.92 AU

Year: 7996 Days

Day: 13.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,436,640 km

• M1: 185,352 km (0.086 R)
• M2: 899,382 km (0.097 R)
• M3: 1,449,155 km (0.091 R)
• M4: 2,162,587 km (0.096 R)
• M5: 2,727,768 km (0.045 R)
• M6: 4,042,134 km (0.116 R)
• M7: 6,619,556 km (0.106 R)
• M8: 7,161,848 km (0.103 R)
• M9: 10,258,375 km (0.102 R)
• M10: 12,893,691 km (0.115 R)
• M11: 14,581,005 km (0.113 R)
• M12: 17,408,854 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.8

Radius: 9.6

Gravity: 8.66 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 10.33 AU - 12.61 AU

Year: 14481 Days

Day: 14.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 35,436,640 km

• M1: 119,379 km (0.057 R)
• M2: 674,537 km (0.074 R)
• M3: 1,043,894 km (0.045 R)
• M4: 1,548,936 km (0.106 R)
• M5: 1,859,053 km (0.114 R)
• M6: 2,905,639 km (0.078 R)
• M7: 4,120,524 km (0.097 R)
• M8: 4,927,155 km (0.034 R)
• M9: 5,912,706 km (0.104 R)
• M10: 6,268,899 km (0.115 R)
• M11: 6,766,162 km (0.053 R)
• M12: 8,818,046 km (0.086 R)
• M13: 9,283,894 km (0.115 R)
• M14: 9,766,198 km (0.114 R)
• M15: 10,606,938 km (0.09 R)
• M16: 11,740,291 km (0.107 R)
• M17: 13,285,039 km (0.079 R)
• M18: 14,387,426 km (0.082 R)
• M19: 15,106,692 km (0.091 R)
• M20: 15,774,347 km (0.09 R)
• M21: 19,067,296 km (0.065 R)
• M22: 20,378,671 km (0.103 R)
• M23: 22,314,168 km (0.105 R)
• M24: 26,122,780 km (0.078 R)
• M25: 33,356,286 km (0.028 R)
• M26: 33,981,755 km (0.117 R)
• M27: 35,774,835 km (0.11 R)
• M28: 38,171,841 km (0.107 R)
• M29: 47,089,819 km (0.025 R)
• M30: 47,561,053 km (0.086 R)
• M31: 48,673,014 km (0.064 R)
• M32: 52,112,568 km (0.065 R)
• M33: 63,207,045 km (0.11 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125

Radius: 8.6

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 10.8 AU - 12.56 AU

Year: 14881 Days

Day: 12.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 35,436,640 km

• M1: 115,041 km (0.025 R)
• M2: 402,568 km (0.116 R)
• M3: 794,664 km (0.076 R)
• M4: 1,232,387 km (0.037 R)
• M5: 2,235,142 km (0.111 R)
• M6: 2,577,721 km (0.089 R)
• M7: 3,326,309 km (0.073 R)
• M8: 4,848,766 km (0.082 R)
• M9: 5,889,219 km (0.095 R)
• M10: 7,071,791 km (0.115 R)
• M11: 8,941,016 km (0.049 R)
• M12: 9,499,315 km (0.112 R)
• M13: 10,126,280 km (0.09 R)
• M14: 11,069,345 km (0.057 R)
• M15: 14,481,523 km (0.086 R)
• M16: 17,658,533 km (0.1 R)
• M17: 18,813,129 km (0.092 R)
• M18: 20,162,352 km (0.098 R)
• M19: 21,423,163 km (0.119 R)
• M20: 23,452,009 km (0.09 R)
• M21: 26,906,374 km (0.053 R)
• M22: 28,341,616 km (0.082 R)
• M23: 31,169,464 km (0.117 R)
• M24: 33,870,604 km (0.057 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 11,053 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit