🌌 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: 3

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.51 AU - 0.55 AU

Year: 245 Days

Day: 42.5 Hours

Environment

Temp: -112 °C

Axial Tilt: 13.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 979.2

Radius: 12.5

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1 AU - 1.06 AU

Year: 665 Days

Day: 7.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,871,563 km

• M1: 155,432 km (0.091 R)
• M2: 603,478 km (0.045 R)
• M3: 1,008,290 km (0.054 R)
• M4: 1,473,389 km (0.074 R)
• M5: 1,907,074 km (0.106 R)
• M6: 2,300,965 km (0.073 R)
• M7: 2,750,058 km (0.091 R)
• M8: 3,350,394 km (0.084 R)
• M9: 4,175,875 km (0.034 R)
• M10: 4,867,466 km (0.091 R)
• M11: 6,779,776 km (0.053 R)
• M12: 7,736,753 km (0.105 R)
• M13: 8,550,117 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.8

Radius: 14

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.08 AU - 1.26 AU

Year: 805 Days

Day: 6 Hours

Environment

Temp: -158 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,871,563 km

• M1: 175,927 km (0.051 R)
• M2: 648,058 km (0.109 R)
• M3: 1,414,448 km (0.078 R)
• M4: 2,472,853 km (0.11 R)
• M5: 3,145,594 km (0.104 R)
• M6: 4,487,637 km (0.107 R)
• M7: 5,425,167 km (0.087 R)
• M8: 6,126,482 km (0.116 R)
• M9: 6,948,671 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 702

Radius: 13.1

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.09 AU - 1.65 AU

Year: 1020 Days

Day: 8.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 61,871,563 km

• M1: 163,062 km (0.113 R)
• M2: 623,524 km (0.112 R)
• M3: 1,556,566 km (0.083 R)
• M4: 1,967,062 km (0.063 R)
• M5: 2,508,307 km (0.072 R)
• M6: 3,863,814 km (0.092 R)
• M7: 4,996,569 km (0.058 R)
• M8: 6,495,091 km (0.057 R)
• M9: 7,071,791 km (0.084 R)
• M10: 7,607,351 km (0.084 R)
• M11: 8,143,809 km (0.092 R)
• M12: 8,569,415 km (0.114 R)
• M13: 9,350,017 km (0.045 R)
• M14: 10,026,348 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.8

Radius: 9.6

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 3.17 AU - 3.69 AU

Year: 4039 Days

Day: 14.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 61,871,563 km

• M1: 124,615 km (0.07 R)
• M2: 528,230 km (0.088 R)
• M3: 831,315 km (0.088 R)
• M4: 1,165,667 km (0.112 R)
• M5: 1,515,127 km (0.09 R)
• M6: 1,922,183 km (0.04 R)
• M7: 2,372,173 km (0.075 R)
• M8: 2,775,190 km (0.106 R)
• M9: 3,260,186 km (0.079 R)
• M10: 3,680,108 km (0.085 R)
• M11: 4,445,301 km (0.039 R)
• M12: 5,011,977 km (0.111 R)
• M13: 5,626,077 km (0.058 R)
• M14: 6,062,753 km (0.101 R)
• M15: 6,760,178 km (0.094 R)
• M16: 7,222,585 km (0.065 R)
• M17: 7,772,058 km (0.11 R)
• M18: 10,781,369 km (0.077 R)
• M19: 13,554,315 km (0.049 R)
• M20: 15,001,525 km (0.097 R)
• M21: 16,111,990 km (0.099 R)
• M22: 18,377,201 km (0.111 R)
• M23: 20,021,281 km (0.055 R)
• M24: 21,235,567 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.2

Radius: 8.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 3.56 AU - 4 AU

Year: 4673 Days

Day: 9 Hours

Environment

Temp: -218 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 61,871,563 km

• M1: 105,167 km (0.081 R)
• M2: 588,368 km (0.086 R)
• M3: 1,829,732 km (0.116 R)
• M4: 5,414,845 km (0.057 R)
• M5: 6,240,176 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.4

Radius: 3.5

Gravity: 45.18 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 6.95 AU - 10.45 AU

Year: 16316 Days

Day: 17.1 Hours

Environment

Temp: -238 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 61,871,563 km

• M1: 45,328 km (0.081 R)
• M2: 278,252 km (0.107 R)
• M3: 474,375 km (0.061 R)
• M4: 766,689 km (0.079 R)
• M5: 1,080,845 km (0.11 R)
• M6: 1,260,512 km (0.095 R)
• M7: 1,646,923 km (0.081 R)
• M8: 2,012,989 km (0.061 R)
• M9: 2,245,314 km (0.061 R)
• M10: 2,626,789 km (0.067 R)
• M11: 4,120,374 km (0.114 R)
• M12: 6,462,628 km (0.065 R)
• M13: 6,881,203 km (0.066 R)
• M14: 7,451,919 km (0.112 R)
• M15: 7,588,053 km (0.109 R)
• M16: 8,488,632 km (0.105 R)
• M17: 9,092,858 km (0.084 R)
• M18: 9,617,797 km (0.06 R)
• M19: 10,785,558 km (0.063 R)
• M20: 12,044,573 km (0.088 R)
• M21: 14,707,715 km (0.082 R)
• M22: 15,283,666 km (0.086 R)
• M23: 17,023,041 km (0.091 R)
• M24: 17,577,600 km (0.043 R)
• M25: 22,833,422 km (0.12 R)
• M26: 23,410,421 km (0.074 R)
• M27: 24,393,429 km (0.111 R)
• M28: 33,390,694 km (0.116 R)
• M29: 38,282,394 km (0.11 R)
• M30: 43,777,423 km (0.102 R)
• M31: 44,966,128 km (0.088 R)
• M32: 49,775,400 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 436 - 17,130 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit