🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.49 AU - 0.59 AU

Year: 252 Days

Day: 30.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 27.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,710,829 km

• M1: 204,650 km (0.052 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.83

Radius: 0.93

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.59 AU - 0.61 AU

Year: 296 Days

Day: 20.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,710,829 km

• M1: 429,495 km (0.067 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.46 AU - 0.76 AU

Year: 303 Days

Day: 36.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.9

Radius: 13

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.53 AU - 0.85 AU

Year: 364 Days

Day: 7.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 41,710,829 km

• M1: 161,715 km (0.076 R)
• M2: 626,217 km (0.092 R)
• M3: 1,350,570 km (0.104 R)
• M4: 1,799,662 km (0.092 R)
• M5: 4,002,341 km (0.057 R)
• M6: 4,777,258 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.3

Radius: 10.3

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.73 AU - 0.83 AU

Year: 438 Days

Day: 11.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 41,710,829 km

• M1: 128,056 km (0.115 R)
• M2: 458,667 km (0.101 R)
• M3: 867,518 km (0.113 R)
• M4: 1,278,015 km (0.057 R)
• M5: 1,650,214 km (0.047 R)
• M6: 2,248,306 km (0.061 R)
• M7: 2,789,402 km (0.118 R)
• M8: 3,181,199 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.6

Radius: 14.7

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.47 AU - 1.55 AU

Year: 1180 Days

Day: 9.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 107.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,710,829 km

• M1: 190,887 km (0.109 R)
• M2: 687,103 km (0.057 R)
• M3: 1,208,152 km (0.077 R)
• M4: 1,772,585 km (0.112 R)
• M5: 2,264,463 km (0.067 R)
• M6: 3,302,822 km (0.118 R)
• M7: 4,076,991 km (0.087 R)
• M8: 5,232,934 km (0.113 R)
• M9: 6,525,160 km (0.088 R)
• M10: 7,169,777 km (0.119 R)
• M11: 8,385,858 km (0.098 R)
• M12: 10,848,090 km (0.108 R)
• M13: 11,754,802 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.7

Radius: 12.1

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.99 AU - 3.07 AU

Year: 2559 Days

Day: 5.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,710,829 km

• M1: 151,692 km (0.028 R)
• M2: 609,163 km (0.098 R)
• M3: 1,294,022 km (0.119 R)
• M4: 1,681,181 km (0.115 R)
• M5: 2,065,498 km (0.067 R)
• M6: 2,509,205 km (0.093 R)
• M7: 3,069,599 km (0.056 R)
• M8: 3,851,397 km (0.115 R)
• M9: 4,707,695 km (0.088 R)
• M10: 6,279,371 km (0.112 R)
• M11: 7,245,324 km (0.096 R)
• M12: 8,711,682 km (0.053 R)
• M13: 9,385,172 km (0.086 R)
• M14: 10,153,507 km (0.098 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.5

Radius: 10.5

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 4.26 AU - 5.26 AU

Year: 6603 Days

Day: 11.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 41,710,829 km

• M1: 132,544 km (0.039 R)
• M2: 608,265 km (0.059 R)
• M3: 1,275,920 km (0.1 R)
• M4: 1,818,213 km (0.102 R)
• M5: 2,158,548 km (0.066 R)
• M6: 3,006,468 km (0.112 R)
• M7: 3,886,104 km (0.106 R)
• M8: 7,732,714 km (0.043 R)
• M9: 8,195,121 km (0.066 R)
• M10: 9,898,592 km (0.061 R)
• M11: 10,444,325 km (0.118 R)
• M12: 10,877,560 km (0.084 R)
• M13: 11,504,375 km (0.11 R)
• M14: 13,226,845 km (0.071 R)
• M15: 16,009,366 km (0.054 R)
• M16: 16,411,634 km (0.079 R)
• M17: 18,274,577 km (0.046 R)
• M18: 20,207,830 km (0.04 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 771.6

Radius: 10.2

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 4.45 AU - 6.05 AU

Year: 7648 Days

Day: 7.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 41,710,829 km

• M1: 126,859 km (0.06 R)
• M2: 1,039,705 km (0.093 R)
• M3: 1,541,157 km (0.11 R)
• M4: 1,864,289 km (0.119 R)
• M5: 2,199,238 km (0.112 R)
• M6: 2,930,473 km (0.118 R)
• M7: 3,526,171 km (0.112 R)
• M8: 5,546,191 km (0.088 R)
• M9: 6,784,563 km (0.095 R)
• M10: 7,827,858 km (0.107 R)
• M11: 8,324,673 km (0.095 R)
• M12: 9,846,831 km (0.066 R)
• M13: 11,494,203 km (0.08 R)
• M14: 12,082,122 km (0.087 R)
• M15: 13,669,057 km (0.037 R)
• M16: 17,114,744 km (0.092 R)
• M17: 18,094,461 km (0.103 R)
• M18: 18,890,322 km (0.11 R)
• M19: 19,936,609 km (0.093 R)
• M20: 28,465,184 km (0.097 R)
• M21: 32,087,247 km (0.106 R)
• M22: 34,665,866 km (0.039 R)
• M23: 34,997,524 km (0.075 R)
• M24: 37,032,803 km (0.093 R)
• M25: 39,867,533 km (0.102 R)
• M26: 41,586,263 km (0.11 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 14,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit