🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.55 AU - 0.63 AU

Year: 293 Days

Day: 21.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.6

Radius: 10.4

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.6 AU - 0.9 AU

Year: 419 Days

Day: 10.3 Hours

Environment

Temp: -135 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 18,880,373 km

• M1: 129,402 km (0.061 R)
• M2: 496,515 km (0.082 R)
• M3: 847,472 km (0.052 R)
• M4: 1,338,751 km (0.061 R)
• M5: 2,209,860 km (0.093 R)
• M6: 2,649,079 km (0.104 R)
• M7: 3,076,929 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.2

Radius: 11.9

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 4.15 AU - 4.67 AU

Year: 5980 Days

Day: 7.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 81.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 18,880,373 km

• M1: 148,401 km (0.116 R)
• M2: 568,771 km (0.101 R)
• M3: 1,019,061 km (0.044 R)
• M4: 1,464,862 km (0.106 R)
• M5: 2,123,542 km (0.089 R)
• M6: 2,699,194 km (0.088 R)
• M7: 3,151,578 km (0.044 R)
• M8: 3,990,074 km (0.079 R)
• M9: 4,604,174 km (0.114 R)
• M10: 7,052,193 km (0.105 R)
• M11: 7,476,154 km (0.027 R)
• M12: 10,059,559 km (0.071 R)
• M13: 14,036,469 km (0.105 R)
• M14: 15,295,036 km (0.101 R)
• M15: 16,287,468 km (0.112 R)
• M16: 18,955,845 km (0.075 R)
• M17: 21,834,557 km (0.037 R)
• M18: 24,843,270 km (0.113 R)
• M19: 25,218,910 km (0.039 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796

Radius: 12.1

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 5.04 AU - 6.74 AU

Year: 9230 Days

Day: 11.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 18,880,373 km

• M1: 151,243 km (0.087 R)
• M2: 597,793 km (0.111 R)
• M3: 1,385,426 km (0.062 R)
• M4: 2,192,207 km (0.098 R)
• M5: 2,784,166 km (0.031 R)
• M6: 5,787,343 km (0.1 R)
• M7: 6,356,563 km (0.08 R)
• M8: 7,566,062 km (0.115 R)
• M9: 11,335,928 km (0.092 R)
• M10: 13,168,053 km (0.059 R)
• M11: 18,828,388 km (0.115 R)
• M12: 19,291,543 km (0.07 R)
• M13: 25,929,649 km (0.074 R)
• M14: 33,721,604 km (0.032 R)
• M15: 34,750,389 km (0.116 R)
• M16: 40,593,681 km (0.071 R)
• M17: 42,811,171 km (0.075 R)
• M18: 46,216,916 km (0.079 R)
• M19: 46,778,207 km (0.098 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 461.2

Radius: 7.3

Gravity: 8.65 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 5.51 AU - 9.19 AU

Year: 12866 Days

Day: 24.8 Hours

Environment

Temp: -233 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 18,880,373 km

• M1: 90,806 km (0.098 R)
• M2: 597,643 km (0.085 R)
• M3: 1,078,002 km (0.117 R)
• M4: 1,512,135 km (0.055 R)
• M5: 1,889,720 km (0.119 R)
• M6: 2,217,639 km (0.095 R)
• M7: 3,171,325 km (0.109 R)
• M8: 4,174,080 km (0.066 R)
• M9: 4,950,792 km (0.094 R)
• M10: 5,855,709 km (0.116 R)
• M11: 7,815,442 km (0.07 R)
• M12: 8,209,782 km (0.095 R)
• M13: 9,472,238 km (0.108 R)
• M14: 11,685,987 km (0.058 R)
• M15: 12,085,862 km (0.103 R)
• M16: 15,010,501 km (0.081 R)
• M17: 16,457,860 km (0.076 R)
• M18: 16,815,698 km (0.096 R)
• M19: 18,375,705 km (0.098 R)
• M20: 19,948,876 km (0.099 R)
• M21: 30,340,692 km (0.081 R)
• M22: 40,379,308 km (0.12 R)
• M23: 41,030,507 km (0.118 R)
• M24: 41,953,975 km (0.113 R)
• M25: 44,946,231 km (0.082 R)
• M26: 47,642,583 km (0.067 R)
• M27: 48,369,629 km (0.087 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 20.6

Radius: 6

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 6.6 AU - 9.14 AU

Year: 14255 Days

Day: 16 Hours

Environment

Temp: -219 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 18,880,373 km

• M1: 74,649 km (0.098 R)
• M2: 334,650 km (0.119 R)
• M3: 813,812 km (0.109 R)
• M4: 1,487,900 km (0.11 R)
• M5: 1,869,525 km (0.073 R)
• M6: 4,055,897 km (0.104 R)
• M7: 4,799,399 km (0.08 R)
• M8: 6,608,336 km (0.083 R)
• M9: 7,726,132 km (0.085 R)
• M10: 8,200,207 km (0.117 R)
• M11: 10,254,934 km (0.041 R)
• M12: 13,556,858 km (0.081 R)
• M13: 14,575,620 km (0.109 R)
• M14: 15,894,624 km (0.106 R)
• M15: 18,543,853 km (0.052 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 316 - 11,631 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit