🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.47 AU - 0.75 AU

Year: 308 Days

Day: 14.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 37.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,455,594 km

• M1: 52,210 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.8

Radius: 12.2

Gravity: 5.86 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.54 AU - 0.86 AU

Year: 378 Days

Day: 8.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,455,594 km

• M1: 151,991 km (0.09 R)
• M2: 565,181 km (0.098 R)
• M3: 953,537 km (0.082 R)
• M4: 1,446,163 km (0.071 R)
• M5: 1,866,832 km (0.079 R)
• M6: 2,342,852 km (0.104 R)
• M7: 3,126,595 km (0.053 R)
• M8: 3,753,710 km (0.097 R)
• M9: 4,309,017 km (0.104 R)
• M10: 4,918,628 km (0.116 R)
• M11: 5,552,026 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390.6

Radius: 8.9

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.58 AU - 0.82 AU

Year: 378 Days

Day: 8.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 43,455,594 km

• M1: 112,647 km (0.088 R)
• M2: 427,401 km (0.043 R)
• M3: 1,073,066 km (0.084 R)
• M4: 2,073,576 km (0.117 R)
• M5: 2,414,510 km (0.074 R)
• M6: 2,956,952 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754

Radius: 8.5

Gravity: 10.44 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.6 AU - 0.86 AU

Year: 403 Days

Day: 11.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 43,455,594 km

• M1: 105,766 km (0.04 R)
• M2: 394,938 km (0.072 R)
• M3: 721,361 km (0.119 R)
• M4: 1,014,722 km (0.071 R)
• M5: 1,459,776 km (0.054 R)
• M6: 1,761,964 km (0.111 R)
• M7: 2,272,242 km (0.095 R)
• M8: 2,661,645 km (0.079 R)
• M9: 3,369,991 km (0.078 R)
• M10: 3,787,818 km (0.12 R)
• M11: 4,089,856 km (0.107 R)
• M12: 5,300,103 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.6

Radius: 12

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.07 AU - 1.73 AU

Year: 1070 Days

Day: 9 Hours

Environment

Temp: -168 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 43,455,594 km

• M1: 149,299 km (0.104 R)
• M2: 620,682 km (0.081 R)
• M3: 2,638,757 km (0.086 R)
• M4: 3,247,471 km (0.099 R)
• M5: 4,575,900 km (0.115 R)
• M6: 6,143,835 km (0.114 R)
• M7: 6,625,989 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857.6

Radius: 9.4

Gravity: 9.71 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 4.98 AU - 6.5 AU

Year: 8879 Days

Day: 5.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 43,455,594 km

• M1: 116,986 km (0.092 R)
• M2: 610,210 km (0.084 R)
• M3: 1,085,632 km (0.106 R)
• M4: 1,507,947 km (0.116 R)
• M5: 3,141,106 km (0.109 R)
• M6: 3,694,768 km (0.103 R)
• M7: 4,965,752 km (0.119 R)
• M8: 5,316,559 km (0.106 R)
• M9: 6,849,787 km (0.092 R)
• M10: 7,655,372 km (0.07 R)
• M11: 8,749,381 km (0.109 R)
• M12: 10,297,869 km (0.112 R)
• M13: 10,870,230 km (0.079 R)
• M14: 11,518,438 km (0.063 R)
• M15: 15,219,190 km (0.091 R)
• M16: 16,307,215 km (0.096 R)
• M17: 18,866,835 km (0.088 R)
• M18: 23,412,067 km (0.114 R)
• M19: 24,219,446 km (0.119 R)
• M20: 28,033,594 km (0.093 R)
• M21: 33,229,277 km (0.102 R)
• M22: 34,708,202 km (0.1 R)
• M23: 36,948,131 km (0.108 R)
• M24: 37,797,099 km (0.115 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 266.1

Radius: 7.3

Gravity: 4.99 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 7.42 AU - 8.02 AU

Year: 13850 Days

Day: 24.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 43,455,594 km

• M1: 91,255 km (0.115 R)
• M2: 402,568 km (0.108 R)
• M3: 639,381 km (0.101 R)
• M4: 1,525,150 km (0.119 R)
• M5: 1,765,255 km (0.106 R)
• M6: 2,014,485 km (0.077 R)
• M7: 2,604,200 km (0.108 R)
• M8: 3,190,175 km (0.07 R)
• M9: 4,202,653 km (0.082 R)
• M10: 4,621,826 km (0.108 R)
• M11: 5,478,872 km (0.099 R)
• M12: 6,365,838 km (0.045 R)
• M13: 6,805,955 km (0.096 R)
• M14: 8,249,126 km (0.117 R)
• M15: 8,683,708 km (0.085 R)
• M16: 10,475,890 km (0.085 R)
• M17: 10,779,873 km (0.106 R)
• M18: 12,110,097 km (0.104 R)
• M19: 12,728,834 km (0.064 R)
• M20: 13,075,003 km (0.109 R)
• M21: 13,726,053 km (0.08 R)
• M22: 14,901,294 km (0.089 R)
• M23: 15,941,747 km (0.072 R)
• M24: 16,891,245 km (0.105 R)
• M25: 17,734,528 km (0.061 R)
• M26: 23,652,620 km (0.107 R)
• M27: 29,642,668 km (0.117 R)
• M28: 35,994,145 km (0.096 R)
• M29: 36,803,021 km (0.098 R)
• M30: 42,167,601 km (0.064 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 522 - 18,608 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit