🌌 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: 2.99

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.44 AU - 0.58 AU

Year: 239 Days

Day: 39.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 6.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,893,719 km

• M1: 37,250 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.58

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.61 AU - 0.65 AU

Year: 328 Days

Day: 34.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,893,719 km

• M1: 182,509 km (0.101 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.72

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.56 AU - 0.7 AU

Year: 328 Days

Day: 38.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 28.5

Radius: 11.8

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.75 AU - 0.97 AU

Year: 523 Days

Day: 14.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 131.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 77,893,719 km

• M1: 212,878 km (0.109 R)
• M2: 635,941 km (0.077 R)
• M3: 1,261,260 km (0.062 R)
• M4: 1,770,790 km (0.079 R)
• M5: 2,145,682 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 529.3

Radius: 11.2

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.79 AU - 1.13 AU

Year: 617 Days

Day: 6.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,893,719 km

• M1: 139,276 km (0.089 R)
• M2: 517,309 km (0.04 R)
• M3: 990,488 km (0.105 R)
• M4: 1,365,829 km (0.109 R)
• M5: 1,750,744 km (0.084 R)
• M6: 2,100,354 km (0.097 R)
• M7: 2,487,065 km (0.088 R)
• M8: 2,877,066 km (0.108 R)
• M9: 3,768,520 km (0.118 R)
• M10: 4,213,723 km (0.078 R)
• M11: 5,277,214 km (0.119 R)
• M12: 5,945,019 km (0.043 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.8

Radius: 9.8

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.86 AU - 1.32 AU

Year: 747 Days

Day: 14.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 152 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,893,719 km

• M1: 128,205 km (0.05 R)
• M2: 451,187 km (0.077 R)
• M3: 817,104 km (0.047 R)
• M4: 1,174,942 km (0.042 R)
• M5: 1,511,986 km (0.038 R)
• M6: 1,896,153 km (0.087 R)
• M7: 2,652,370 km (0.06 R)
• M8: 3,036,687 km (0.111 R)
• M9: 3,640,315 km (0.102 R)
• M10: 4,210,731 km (0.104 R)
• M11: 5,140,632 km (0.108 R)
• M12: 5,492,037 km (0.036 R)
• M13: 5,879,047 km (0.104 R)
• M14: 6,305,101 km (0.075 R)
• M15: 6,708,268 km (0.106 R)
• M16: 7,449,376 km (0.09 R)
• M17: 8,521,394 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.1

Radius: 10.3

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.21 AU - 1.91 AU

Year: 1278 Days

Day: 10.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,893,719 km

• M1: 129,103 km (0.057 R)
• M2: 512,223 km (0.037 R)
• M3: 863,329 km (0.075 R)
• M4: 1,225,506 km (0.112 R)
• M5: 1,878,949 km (0.111 R)
• M6: 2,290,194 km (0.113 R)
• M7: 2,729,413 km (0.025 R)
• M8: 3,095,180 km (0.091 R)
• M9: 3,418,910 km (0.083 R)
• M10: 4,350,904 km (0.12 R)
• M11: 5,028,732 km (0.1 R)
• M12: 5,512,831 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.9

Radius: 14.1

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.92 AU - 2.34 AU

Year: 2039 Days

Day: 14.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 77,893,719 km

• M1: 175,628 km (0.039 R)
• M2: 1,625,231 km (0.101 R)
• M3: 2,218,387 km (0.028 R)
• M4: 2,821,266 km (0.115 R)
• M5: 4,138,176 km (0.119 R)
• M6: 5,352,313 km (0.111 R)
• M7: 8,299,391 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 157.1

Radius: 6.2

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 7.25 AU - 11.77 AU

Year: 19239 Days

Day: 22.6 Hours

Environment

Temp: -233 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 77,893,719 km

• M1: 89,011 km (0.119 R)
• M2: 363,972 km (0.085 R)
• M3: 855,251 km (0.055 R)
• M4: 1,646,923 km (0.111 R)
• M5: 1,905,428 km (0.081 R)
• M6: 2,827,250 km (0.087 R)
• M7: 3,555,193 km (0.081 R)
• M8: 4,401,469 km (0.1 R)
• M9: 6,521,570 km (0.077 R)
• M10: 7,574,290 km (0.1 R)
• M11: 7,864,659 km (0.074 R)
• M12: 12,066,115 km (0.119 R)
• M13: 13,704,212 km (0.1 R)
• M14: 14,073,569 km (0.094 R)
• M15: 21,167,351 km (0.116 R)
• M16: 21,994,328 km (0.091 R)
• M17: 22,842,697 km (0.119 R)
• M18: 23,977,846 km (0.092 R)
• M19: 27,608,437 km (0.106 R)
• M20: 28,495,402 km (0.111 R)
• M21: 31,164,378 km (0.108 R)
• M22: 34,220,064 km (0.114 R)
• M23: 35,704,374 km (0.108 R)
• M24: 36,993,309 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 753.1

Radius: 3.6

Gravity: 58.11 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 8.67 AU - 10.69 AU

Year: 19757 Days

Day: 17.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 77,893,719 km

• M1: 45,328 km (0.111 R)
• M2: 686,505 km (0.112 R)
• M3: 1,305,541 km (0.112 R)
• M4: 1,526,497 km (0.097 R)
• M5: 2,741,979 km (0.028 R)
• M6: 3,737,703 km (0.073 R)
• M7: 4,452,781 km (0.041 R)
• M8: 4,592,056 km (0.113 R)
• M9: 4,952,737 km (0.051 R)
• M10: 5,410,207 km (0.11 R)
• M11: 5,528,838 km (0.064 R)
• M12: 6,148,323 km (0.091 R)
• M13: 6,452,755 km (0.104 R)
• M14: 8,440,761 km (0.04 R)
• M15: 9,717,578 km (0.117 R)
• M16: 14,085,836 km (0.119 R)
• M17: 17,801,997 km (0.096 R)
• M18: 21,424,061 km (0.089 R)
• M19: 25,397,081 km (0.078 R)
• M20: 27,439,541 km (0.1 R)
• M21: 29,466,442 km (0.115 R)
• M22: 30,329,323 km (0.097 R)
• M23: 31,463,275 km (0.115 R)
• M24: 34,353,655 km (0.093 R)
• M25: 35,863,098 km (0.037 R)
• M26: 40,504,371 km (0.072 R)
• M27: 49,907,346 km (0.113 R)
• M28: 52,018,920 km (0.033 R)
• M29: 54,372,692 km (0.116 R)
• M30: 54,556,698 km (0.095 R)
• M31: 72,199,822 km (0.086 R)
• M32: 72,644,726 km (0.12 R)
• M33: 74,896,922 km (0.109 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 343 - 19,391 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit