🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.76

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.52 AU - 0.58 AU

Year: 263 Days

Day: 41.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,814,378 km

• M1: 159,023 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.9

Radius: 8.6

Gravity: 10.38 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.8 AU - 0.82 AU

Year: 471 Days

Day: 7.1 Hours

Environment

Temp: -155 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,814,378 km

• M1: 106,962 km (0.062 R)
• M2: 566,527 km (0.029 R)
• M3: 858,093 km (0.04 R)
• M4: 1,186,610 km (0.063 R)
• M5: 1,465,461 km (0.108 R)
• M6: 1,796,371 km (0.086 R)
• M7: 2,570,241 km (0.066 R)
• M8: 3,021,578 km (0.079 R)
• M9: 3,326,907 km (0.12 R)
• M10: 3,731,120 km (0.069 R)
• M11: 4,413,436 km (0.069 R)
• M12: 4,807,926 km (0.114 R)
• M13: 5,176,236 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.5

Radius: 14

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.17 AU - 1.31 AU

Year: 892 Days

Day: 8.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,814,378 km

• M1: 174,132 km (0.074 R)
• M2: 649,404 km (0.071 R)
• M3: 1,466,508 km (0.098 R)
• M4: 1,982,770 km (0.091 R)
• M5: 2,560,368 km (0.105 R)
• M6: 3,480,544 km (0.034 R)
• M7: 3,963,296 km (0.072 R)
• M8: 4,596,095 km (0.038 R)
• M9: 5,992,292 km (0.114 R)
• M10: 6,515,735 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.4

Radius: 12.2

Gravity: 0.15 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.2 AU - 1.7 AU

Year: 1127 Days

Day: 12.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 36,814,378 km

• M1: 152,141 km (0.105 R)
• M2: 796,160 km (0.119 R)
• M3: 1,393,355 km (0.077 R)
• M4: 1,853,368 km (0.116 R)
• M5: 2,376,362 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.3

Radius: 11.6

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.9 AU - 3 AU

Year: 2476 Days

Day: 14.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,814,378 km

• M1: 144,811 km (0.117 R)
• M2: 510,129 km (0.077 R)
• M3: 1,026,241 km (0.074 R)
• M4: 1,980,227 km (0.07 R)
• M5: 2,760,978 km (0.058 R)
• M6: 3,451,971 km (0.095 R)
• M7: 4,761,401 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 790.3

Radius: 13.1

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 3.09 AU - 4.09 AU

Year: 4392 Days

Day: 14.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,814,378 km

• M1: 162,912 km (0.087 R)
• M2: 670,647 km (0.109 R)
• M3: 1,145,321 km (0.11 R)
• M4: 1,698,385 km (0.085 R)
• M5: 2,242,322 km (0.036 R)
• M6: 2,865,846 km (0.096 R)
• M7: 3,377,322 km (0.087 R)
• M8: 4,366,463 km (0.1 R)
• M9: 4,813,012 km (0.062 R)
• M10: 6,654,861 km (0.101 R)
• M11: 7,949,780 km (0.085 R)
• M12: 9,406,265 km (0.119 R)
• M13: 11,585,158 km (0.092 R)
• M14: 12,251,318 km (0.094 R)
• M15: 12,892,494 km (0.105 R)
• M16: 13,349,516 km (0.09 R)
• M17: 17,528,532 km (0.114 R)
• M18: 19,579,519 km (0.071 R)
• M19: 20,388,544 km (0.086 R)
• M20: 25,638,233 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.4

Radius: 12.4

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.39 AU - 5.11 AU

Year: 5657 Days

Day: 11.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,814,378 km

• M1: 155,731 km (0.056 R)
• M2: 843,134 km (0.111 R)
• M3: 1,578,706 km (0.094 R)
• M4: 2,639,954 km (0.079 R)
• M5: 3,587,806 km (0.115 R)
• M6: 4,272,814 km (0.073 R)
• M7: 4,672,689 km (0.097 R)
• M8: 6,961,687 km (0.099 R)
• M9: 8,485,490 km (0.087 R)
• M10: 9,745,404 km (0.116 R)
• M11: 10,941,139 km (0.113 R)
• M12: 12,432,032 km (0.057 R)
• M13: 14,888,130 km (0.118 R)
• M14: 16,110,494 km (0.072 R)
• M15: 16,654,282 km (0.044 R)
• M16: 20,458,706 km (0.066 R)
• M17: 21,096,890 km (0.114 R)
• M18: 25,859,937 km (0.106 R)
• M19: 26,355,854 km (0.086 R)
• M20: 27,968,220 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.2

Radius: 8.9

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 5.06 AU - 5.08 AU

Year: 7371 Days

Day: 6.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,814,378 km

• M1: 110,702 km (0.097 R)
• M2: 404,363 km (0.085 R)
• M3: 865,723 km (0.064 R)
• M4: 1,152,053 km (0.119 R)
• M5: 1,866,233 km (0.091 R)
• M6: 2,968,171 km (0.034 R)
• M7: 3,660,062 km (0.051 R)
• M8: 3,945,793 km (0.103 R)
• M9: 4,562,436 km (0.09 R)
• M10: 5,065,833 km (0.062 R)
• M11: 6,217,288 km (0.043 R)
• M12: 6,979,788 km (0.109 R)
• M13: 10,005,554 km (0.12 R)
• M14: 12,700,111 km (0.114 R)
• M15: 14,271,936 km (0.091 R)
• M16: 14,565,746 km (0.104 R)
• M17: 18,138,443 km (0.079 R)
• M18: 20,645,553 km (0.114 R)
• M19: 22,810,833 km (0.099 R)
• M20: 26,956,938 km (0.113 R)
• M21: 30,498,967 km (0.117 R)
• M22: 33,712,927 km (0.09 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 379 - 10,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit