🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.44 AU - 0.58 AU

Year: 239 Days

Day: 28.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 80,428,416 km

• M1: 85,271 km (0.116 R)
• M2: 114,143 km (0.074 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.53 AU - 0.55 AU

Year: 260 Days

Day: 26.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 15.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 272.6

Radius: 10.6

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.7 AU - 0.88 AU

Year: 461 Days

Day: 12.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 80,428,416 km

• M1: 138,976 km (0.1 R)
• M2: 585,526 km (0.08 R)
• M3: 1,236,875 km (0.094 R)
• M4: 1,699,581 km (0.083 R)
• M5: 2,171,413 km (0.119 R)
• M6: 3,773,606 km (0.075 R)
• M7: 4,196,220 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.4

Radius: 11

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.03 AU - 1.39 AU

Year: 873 Days

Day: 13 Hours

Environment

Temp: -161 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 80,428,416 km

• M1: 145,409 km (0.102 R)
• M2: 492,177 km (0.113 R)
• M3: 938,278 km (0.106 R)
• M4: 1,542,354 km (0.076 R)
• M5: 2,322,058 km (0.05 R)
• M6: 3,105,951 km (0.084 R)
• M7: 3,830,902 km (0.106 R)
• M8: 4,227,187 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.9

Radius: 12.4

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.06 AU - 1.42 AU

Year: 906 Days

Day: 11.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 80,428,416 km

• M1: 156,031 km (0.085 R)
• M2: 582,983 km (0.046 R)
• M3: 1,166,415 km (0.097 R)
• M4: 1,571,376 km (0.111 R)
• M5: 2,416,305 km (0.069 R)
• M6: 3,138,264 km (0.104 R)
• M7: 4,160,018 km (0.076 R)
• M8: 4,683,760 km (0.099 R)
• M9: 5,234,130 km (0.111 R)
• M10: 5,845,986 km (0.12 R)
• M11: 6,465,022 km (0.086 R)
• M12: 7,191,768 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 376.6

Radius: 11.6

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.35 AU - 1.37 AU

Year: 1040 Days

Day: 5.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 80,428,416 km

• M1: 158,723 km (0.11 R)
• M2: 552,914 km (0.088 R)
• M3: 1,008,738 km (0.111 R)
• M4: 1,481,917 km (0.066 R)
• M5: 2,083,150 km (0.093 R)
• M6: 2,457,893 km (0.052 R)
• M7: 4,683,909 km (0.035 R)
• M8: 5,711,348 km (0.101 R)
• M9: 6,166,275 km (0.11 R)
• M10: 7,537,788 km (0.116 R)
• M11: 7,940,505 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.7

Radius: 14

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.48 AU - 1.64 AU

Year: 1278 Days

Day: 11 Hours

Environment

Temp: -188 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 80,428,416 km

• M1: 174,132 km (0.106 R)
• M2: 616,493 km (0.12 R)
• M3: 1,421,778 km (0.054 R)
• M4: 1,895,106 km (0.097 R)
• M5: 2,653,268 km (0.092 R)
• M6: 3,576,586 km (0.106 R)
• M7: 4,316,048 km (0.096 R)
• M8: 5,233,382 km (0.119 R)
• M9: 5,697,435 km (0.084 R)
• M10: 7,039,178 km (0.097 R)
• M11: 7,581,022 km (0.09 R)
• M12: 8,124,062 km (0.105 R)
• M13: 10,002,114 km (0.087 R)
• M14: 10,720,183 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.1

Radius: 11.5

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 3.09 AU - 4.95 AU

Year: 5287 Days

Day: 10.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 80,428,416 km

• M1: 143,165 km (0.104 R)
• M2: 545,135 km (0.072 R)
• M3: 1,038,359 km (0.062 R)
• M4: 1,972,747 km (0.044 R)
• M5: 2,367,835 km (0.103 R)
• M6: 2,833,683 km (0.072 R)
• M7: 3,281,280 km (0.106 R)
• M8: 3,732,916 km (0.065 R)
• M9: 4,736,568 km (0.045 R)
• M10: 5,708,356 km (0.073 R)
• M11: 6,458,140 km (0.104 R)
• M12: 8,227,284 km (0.1 R)
• M13: 9,263,848 km (0.078 R)
• M14: 10,086,337 km (0.063 R)
• M15: 11,410,428 km (0.058 R)
• M16: 16,962,005 km (0.054 R)
• M17: 24,626,502 km (0.103 R)
• M18: 25,092,350 km (0.101 R)
• M19: 25,643,319 km (0.096 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.3

Radius: 13.9

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 4.97 AU - 6.51 AU

Year: 9021 Days

Day: 5.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 80,428,416 km

• M1: 178,620 km (0.113 R)
• M2: 702,362 km (0.103 R)
• M3: 1,378,395 km (0.106 R)
• M4: 1,859,202 km (0.04 R)
• M5: 2,351,529 km (0.089 R)
• M6: 2,796,732 km (0.111 R)
• M7: 3,428,035 km (0.058 R)
• M8: 4,279,696 km (0.107 R)
• M9: 5,507,296 km (0.118 R)
• M10: 6,922,492 km (0.032 R)
• M11: 7,850,148 km (0.107 R)
• M12: 10,182,080 km (0.119 R)
• M13: 11,332,188 km (0.075 R)
• M14: 12,250,420 km (0.046 R)
• M15: 12,998,409 km (0.07 R)
• M16: 16,235,408 km (0.081 R)
• M17: 17,669,154 km (0.1 R)
• M18: 21,544,337 km (0.055 R)
• M19: 22,873,215 km (0.099 R)
• M20: 25,180,014 km (0.078 R)
• M21: 31,126,380 km (0.096 R)
• M22: 33,231,521 km (0.103 R)
• M23: 34,476,325 km (0.112 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 953.2

Radius: 4.9

Gravity: 39.7 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 7.94 AU - 10.54 AU

Year: 18425 Days

Day: 19.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 80,428,416 km

• M1: 241,601 km (0.077 R)
• M2: 537,505 km (0.106 R)
• M3: 1,000,959 km (0.111 R)
• M4: 1,199,925 km (0.099 R)
• M5: 1,863,241 km (0.103 R)
• M6: 2,187,719 km (0.092 R)
• M7: 3,109,541 km (0.098 R)
• M8: 3,748,474 km (0.026 R)
• M9: 4,865,072 km (0.098 R)
• M10: 8,037,594 km (0.098 R)
• M11: 9,574,114 km (0.071 R)
• M12: 10,784,660 km (0.112 R)
• M13: 11,890,936 km (0.06 R)
• M14: 14,250,544 km (0.074 R)
• M15: 16,399,517 km (0.089 R)
• M16: 24,777,746 km (0.059 R)
• M17: 30,057,952 km (0.061 R)
• M18: 30,814,169 km (0.11 R)
• M19: 38,053,061 km (0.109 R)
• M20: 46,014,061 km (0.1 R)
• M21: 50,469,235 km (0.057 R)
• M22: 58,453,722 km (0.114 R)
• M23: 59,828,377 km (0.082 R)
• M24: 63,051,164 km (0.064 R)
• M25: 67,883,774 km (0.048 R)
• M26: 71,164,904 km (0.092 R)
• M27: 72,281,802 km (0.111 R)
• M28: 73,864,846 km (0.092 R)
• M29: 78,514,946 km (0.1 R)
• M30: 79,947,196 km (0.118 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: 248 - 18,910 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit