🌌 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: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.4 AU - 0.62 AU

Year: 235 Days

Day: 25.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 45.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.55 AU - 0.63 AU

Year: 293 Days

Day: 31.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.5

Radius: 12.1

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.75 AU - 1.25 AU

Year: 646 Days

Day: 8.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 158.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,165,768 km

• M1: 150,495 km (0.102 R)
• M2: 874,549 km (0.054 R)
• M3: 1,513,182 km (0.033 R)
• M4: 2,005,958 km (0.113 R)
• M5: 3,489,520 km (0.116 R)
• M6: 3,929,936 km (0.076 R)
• M7: 4,407,452 km (0.097 R)
• M8: 6,760,178 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 632.3

Radius: 12

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.85 AU - 1.27 AU

Year: 705 Days

Day: 5.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,165,768 km

• M1: 149,299 km (0.106 R)
• M2: 612,753 km (0.095 R)
• M3: 1,266,944 km (0.074 R)
• M4: 1,811,630 km (0.067 R)
• M5: 3,213,661 km (0.057 R)
• M6: 3,619,670 km (0.112 R)
• M7: 4,255,311 km (0.095 R)
• M8: 4,813,162 km (0.115 R)
• M9: 5,293,969 km (0.118 R)
• M10: 5,863,788 km (0.063 R)
• M11: 6,433,606 km (0.106 R)
• M12: 6,868,936 km (0.104 R)
• M13: 7,502,632 km (0.11 R)
• M14: 7,915,373 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.5

Radius: 11

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.88 AU - 2.46 AU

Year: 2064 Days

Day: 11.1 Hours

Environment

Temp: -188 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,165,768 km

• M1: 136,732 km (0.12 R)
• M2: 486,343 km (0.098 R)
• M3: 831,166 km (0.117 R)
• M4: 1,420,282 km (0.062 R)
• M5: 2,298,721 km (0.076 R)
• M6: 2,643,694 km (0.091 R)
• M7: 3,226,976 km (0.113 R)
• M8: 3,610,096 km (0.098 R)
• M9: 4,549,421 km (0.108 R)
• M10: 5,762,959 km (0.065 R)
• M11: 6,907,083 km (0.119 R)
• M12: 7,867,651 km (0.113 R)
• M13: 8,318,689 km (0.053 R)
• M14: 8,914,836 km (0.113 R)
• M15: 10,122,540 km (0.086 R)
• M16: 10,584,349 km (0.096 R)
• M17: 12,372,941 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.7

Radius: 9.8

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 3.35 AU - 5.31 AU

Year: 5818 Days

Day: 11.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,165,768 km

• M1: 122,820 km (0.117 R)
• M2: 479,611 km (0.053 R)
• M3: 1,229,994 km (0.11 R)
• M4: 1,984,266 km (0.118 R)
• M5: 2,823,660 km (0.098 R)
• M6: 3,227,424 km (0.105 R)
• M7: 3,949,384 km (0.077 R)
• M8: 4,504,242 km (0.025 R)
• M9: 5,216,328 km (0.089 R)
• M10: 5,655,847 km (0.118 R)
• M11: 7,666,741 km (0.117 R)
• M12: 12,118,624 km (0.081 R)
• M13: 13,492,082 km (0.063 R)
• M14: 18,233,288 km (0.105 R)
• M15: 20,567,463 km (0.042 R)
• M16: 21,876,594 km (0.077 R)
• M17: 23,313,631 km (0.118 R)
• M18: 26,374,853 km (0.083 R)
• M19: 26,775,476 km (0.072 R)
• M20: 27,098,906 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 579.7

Radius: 5.5

Gravity: 19.16 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 7.39 AU - 7.73 AU

Year: 13421 Days

Day: 15.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 55,165,768 km

• M1: 68,516 km (0.039 R)
• M2: 246,986 km (0.091 R)
• M3: 434,432 km (0.114 R)
• M4: 663,167 km (0.085 R)
• M5: 1,014,573 km (0.061 R)
• M6: 1,239,418 km (0.114 R)
• M7: 1,774,231 km (0.074 R)
• M8: 1,959,732 km (0.11 R)
• M9: 2,682,140 km (0.033 R)
• M10: 4,092,399 km (0.099 R)
• M11: 4,449,041 km (0.091 R)
• M12: 7,550,504 km (0.067 R)
• M13: 8,744,295 km (0.082 R)
• M14: 9,036,609 km (0.097 R)
• M15: 11,674,319 km (0.089 R)
• M16: 13,584,534 km (0.115 R)
• M17: 14,990,903 km (0.115 R)
• M18: 16,053,048 km (0.098 R)
• M19: 17,933,344 km (0.094 R)
• M20: 18,405,475 km (0.055 R)
• M21: 20,123,457 km (0.118 R)
• M22: 22,395,100 km (0.117 R)
• M23: 25,222,201 km (0.084 R)
• M24: 25,517,358 km (0.062 R)
• M25: 33,785,782 km (0.096 R)
• M26: 36,852,987 km (0.073 R)
• M27: 44,672,916 km (0.071 R)
• M28: 45,831,402 km (0.114 R)
• M29: 48,510,999 km (0.073 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 401 - 16,370 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit