🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.42 AU - 0.64 AU

Year: 249 Days

Day: 36 Hours

Environment

Temp: -129 °C

Axial Tilt: 16.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.44 AU - 0.68 AU

Year: 271 Days

Day: 41.5 Hours

Environment

Temp: -115 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,201,353 km

• M1: 66,721 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 466.9

Radius: 11.4

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.73 AU - 1.01 AU

Year: 524 Days

Day: 12.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,201,353 km

• M1: 141,819 km (0.059 R)
• M2: 499,806 km (0.118 R)
• M3: 888,611 km (0.075 R)
• M4: 1,515,726 km (0.101 R)
• M5: 3,016,641 km (0.116 R)
• M6: 3,938,014 km (0.112 R)
• M7: 4,358,384 km (0.109 R)
• M8: 4,914,739 km (0.047 R)
• M9: 5,274,073 km (0.091 R)
• M10: 5,718,528 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.9

Radius: 14.4

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.68 AU - 1.06 AU

Year: 524 Days

Day: 13.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 41,201,353 km

• M1: 179,368 km (0.09 R)
• M2: 634,145 km (0.069 R)
• M3: 1,152,502 km (0.117 R)
• M4: 1,697,038 km (0.095 R)
• M5: 2,489,458 km (0.097 R)
• M6: 3,188,978 km (0.04 R)
• M7: 4,070,708 km (0.083 R)
• M8: 5,498,919 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.7

Radius: 12.2

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.94 AU - 1.4 AU

Year: 817 Days

Day: 6 Hours

Environment

Temp: -159 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,201,353 km

• M1: 151,842 km (0.108 R)
• M2: 534,214 km (0.115 R)
• M3: 1,158,037 km (0.082 R)
• M4: 2,194,451 km (0.027 R)
• M5: 2,841,612 km (0.103 R)
• M6: 4,413,287 km (0.052 R)
• M7: 4,960,965 km (0.117 R)
• M8: 5,448,803 km (0.119 R)
• M9: 5,987,056 km (0.1 R)
• M10: 6,462,628 km (0.079 R)
• M11: 7,004,322 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.2

Radius: 9.7

Gravity: 7.84 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.63 AU - 2.37 AU

Year: 1826 Days

Day: 11.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 41,201,353 km

• M1: 120,576 km (0.106 R)
• M2: 432,936 km (0.071 R)
• M3: 846,574 km (0.089 R)
• M4: 1,439,132 km (0.1 R)
• M5: 2,378,157 km (0.094 R)
• M6: 2,832,187 km (0.062 R)
• M7: 3,166,239 km (0.111 R)
• M8: 4,157,175 km (0.117 R)
• M9: 4,570,514 km (0.101 R)
• M10: 4,903,519 km (0.085 R)
• M11: 5,977,183 km (0.08 R)
• M12: 6,300,165 km (0.074 R)
• M13: 6,608,636 km (0.084 R)
• M14: 8,064,223 km (0.07 R)
• M15: 8,867,414 km (0.12 R)
• M16: 9,655,047 km (0.1 R)
• M17: 11,407,436 km (0.041 R)
• M18: 12,180,259 km (0.087 R)
• M19: 12,946,349 km (0.061 R)
• M20: 15,623,852 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.1

Radius: 8.9

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 3.33 AU - 4.45 AU

Year: 4954 Days

Day: 8.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 41,201,353 km

• M1: 110,702 km (0.082 R)
• M2: 424,260 km (0.092 R)
• M3: 834,307 km (0.037 R)
• M4: 1,131,708 km (0.06 R)
• M5: 1,478,625 km (0.046 R)
• M6: 2,019,571 km (0.09 R)
• M7: 2,360,056 km (0.112 R)
• M8: 2,826,502 km (0.089 R)
• M9: 3,393,179 km (0.113 R)
• M10: 3,704,043 km (0.073 R)
• M11: 5,036,811 km (0.073 R)
• M12: 5,414,994 km (0.089 R)
• M13: 6,350,729 km (0.085 R)
• M14: 7,187,430 km (0.11 R)
• M15: 7,737,651 km (0.119 R)
• M16: 12,455,519 km (0.069 R)
• M17: 13,098,191 km (0.11 R)
• M18: 13,555,961 km (0.082 R)
• M19: 15,494,450 km (0.072 R)
• M20: 17,488,440 km (0.113 R)
• M21: 20,654,679 km (0.085 R)
• M22: 22,698,186 km (0.06 R)
• M23: 23,358,960 km (0.081 R)
• M24: 24,488,573 km (0.102 R)
• M25: 25,339,785 km (0.087 R)
• M26: 26,693,795 km (0.03 R)
• M27: 27,844,652 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.5

Radius: 12.1

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 3.76 AU - 5.38 AU

Year: 6308 Days

Day: 11.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 41,201,353 km

• M1: 158,574 km (0.086 R)
• M2: 553,512 km (0.101 R)
• M3: 1,590,973 km (0.102 R)
• M4: 2,589,240 km (0.095 R)
• M5: 3,268,713 km (0.05 R)
• M6: 4,015,207 km (0.104 R)
• M7: 6,069,934 km (0.052 R)
• M8: 8,543,235 km (0.044 R)
• M9: 9,823,494 km (0.112 R)
• M10: 12,029,614 km (0.096 R)
• M11: 12,549,765 km (0.104 R)
• M12: 13,803,396 km (0.08 R)
• M13: 18,955,995 km (0.097 R)
• M14: 20,020,234 km (0.091 R)
• M15: 26,816,166 km (0.055 R)
• M16: 32,546,214 km (0.068 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.2

Radius: 11.1

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 5.41 AU - 5.59 AU

Year: 8328 Days

Day: 13.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 41,201,353 km

• M1: 138,228 km (0.085 R)
• M2: 518,357 km (0.079 R)
• M3: 868,116 km (0.107 R)
• M4: 1,257,819 km (0.118 R)
• M5: 2,518,031 km (0.086 R)
• M6: 3,290,256 km (0.116 R)
• M7: 3,732,317 km (0.075 R)
• M8: 4,293,459 km (0.071 R)
• M9: 6,046,148 km (0.085 R)
• M10: 7,702,794 km (0.104 R)
• M11: 8,191,531 km (0.1 R)
• M12: 9,596,853 km (0.051 R)
• M13: 10,405,729 km (0.104 R)
• M14: 10,802,013 km (0.097 R)
• M15: 12,268,521 km (0.063 R)
• M16: 14,711,155 km (0.072 R)
• M17: 15,916,166 km (0.106 R)
• M18: 16,442,900 km (0.111 R)
• M19: 20,460,800 km (0.07 R)
• M20: 21,479,412 km (0.036 R)
• M21: 23,195,748 km (0.062 R)
• M22: 24,738,102 km (0.082 R)
• M23: 25,356,091 km (0.081 R)
• M24: 28,601,318 km (0.085 R)
• M25: 30,373,604 km (0.059 R)
• M26: 31,184,275 km (0.074 R)
• M27: 32,009,456 km (0.111 R)
• M28: 34,791,678 km (0.114 R)
• M29: 36,354,826 km (0.108 R)
• M30: 39,381,041 km (0.091 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 481 - 15,630 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit