🌌 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: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.5 AU - 0.52 AU

Year: 239 Days

Day: 39.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,268,829 km

• M1: 118,033 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.46 AU - 0.74 AU

Year: 305 Days

Day: 16.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,268,829 km

• M1: 30,967 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.8

Radius: 10.4

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.79 AU - 1.13 AU

Year: 617 Days

Day: 13.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,268,829 km

• M1: 129,402 km (0.031 R)
• M2: 466,745 km (0.057 R)
• M3: 845,976 km (0.035 R)
• M4: 1,270,984 km (0.12 R)
• M5: 1,638,396 km (0.104 R)
• M6: 1,999,974 km (0.109 R)
• M7: 2,450,264 km (0.11 R)
• M8: 2,987,469 km (0.09 R)
• M9: 3,399,312 km (0.112 R)
• M10: 3,741,592 km (0.111 R)
• M11: 4,246,934 km (0.092 R)
• M12: 4,658,926 km (0.044 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.5

Radius: 12

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 1.37 AU - 2.03 AU

Year: 1454 Days

Day: 5.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,268,829 km

• M1: 149,299 km (0.05 R)
• M2: 589,565 km (0.101 R)
• M3: 1,681,480 km (0.064 R)
• M4: 2,935,858 km (0.108 R)
• M5: 3,543,824 km (0.112 R)
• M6: 4,659,824 km (0.097 R)
• M7: 5,468,251 km (0.118 R)
• M8: 6,463,226 km (0.058 R)
• M9: 8,840,037 km (0.115 R)
• M10: 10,078,409 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.1

Radius: 9

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.73 AU - 4.01 AU

Year: 4994 Days

Day: 13 Hours

Environment

Temp: -212 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,268,829 km

• M1: 111,899 km (0.076 R)
• M2: 514,018 km (0.095 R)
• M3: 831,465 km (0.075 R)
• M4: 1,229,395 km (0.06 R)
• M5: 2,104,244 km (0.068 R)
• M6: 2,474,349 km (0.081 R)
• M7: 3,473,363 km (0.057 R)
• M8: 4,282,538 km (0.098 R)
• M9: 4,811,516 km (0.044 R)
• M10: 5,212,139 km (0.062 R)
• M11: 5,973,443 km (0.047 R)
• M12: 7,653,128 km (0.083 R)
• M13: 8,841,683 km (0.096 R)
• M14: 11,916,667 km (0.116 R)
• M15: 13,188,249 km (0.06 R)
• M16: 14,211,648 km (0.046 R)
• M17: 15,488,167 km (0.026 R)
• M18: 16,946,746 km (0.071 R)
• M19: 17,598,993 km (0.101 R)
• M20: 19,186,077 km (0.061 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 153.7

Radius: 6.5

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 5.27 AU - 6.75 AU

Year: 9665 Days

Day: 23.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,268,829 km

• M1: 82,578 km (0.096 R)
• M2: 529,876 km (0.116 R)
• M3: 1,037,611 km (0.058 R)
• M4: 2,338,215 km (0.081 R)
• M5: 2,790,748 km (0.066 R)
• M6: 3,340,072 km (0.116 R)
• M7: 3,715,862 km (0.11 R)
• M8: 6,306,149 km (0.119 R)
• M9: 9,246,794 km (0.092 R)
• M10: 14,132,810 km (0.065 R)
• M11: 15,850,493 km (0.092 R)
• M12: 17,090,210 km (0.027 R)
• M13: 17,579,096 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 789.9

Radius: 5

Gravity: 31.6 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 5.48 AU - 8.04 AU

Year: 11530 Days

Day: 19.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 55,268,829 km

• M1: 62,382 km (0.07 R)
• M2: 248,482 km (0.109 R)
• M3: 825,331 km (0.112 R)
• M4: 1,032,525 km (0.113 R)
• M5: 2,637,859 km (0.102 R)
• M6: 3,362,212 km (0.04 R)
• M7: 5,059,400 km (0.107 R)
• M8: 5,228,296 km (0.104 R)
• M9: 5,612,912 km (0.081 R)
• M10: 7,428,581 km (0.117 R)
• M11: 7,914,625 km (0.091 R)
• M12: 8,188,539 km (0.108 R)
• M13: 8,563,431 km (0.089 R)
• M14: 11,114,673 km (0.119 R)
• M15: 11,458,150 km (0.052 R)
• M16: 12,106,507 km (0.107 R)
• M17: 14,670,315 km (0.071 R)
• M18: 15,647,040 km (0.114 R)
• M19: 19,324,604 km (0.119 R)
• M20: 20,157,116 km (0.093 R)
• M21: 21,804,338 km (0.076 R)
• M22: 23,166,726 km (0.057 R)
• M23: 26,059,650 km (0.068 R)
• M24: 28,861,319 km (0.092 R)
• M25: 30,612,811 km (0.105 R)
• M26: 33,608,209 km (0.107 R)
• M27: 38,070,115 km (0.086 R)
• M28: 44,755,195 km (0.085 R)
• M29: 49,058,228 km (0.105 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 432 - 10,523 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit