🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.54 AU - 0.62 AU

Year: 290 Days

Day: 37.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 3.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.51 AU - 0.73 AU

Year: 320 Days

Day: 30.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 156.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 293.7

Radius: 14.7

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.61 AU - 0.83 AU

Year: 401 Days

Day: 11.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 60,772,821 km

• M1: 182,809 km (0.075 R)
• M2: 768,933 km (0.063 R)
• M3: 2,104,842 km (0.078 R)
• M4: 2,591,933 km (0.091 R)
• M5: 3,265,123 km (0.038 R)
• M6: 3,959,856 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.2

Radius: 8.6

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.71 AU - 2.13 AU

Year: 1745 Days

Day: 10.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,772,821 km

• M1: 106,962 km (0.105 R)
• M2: 392,545 km (0.046 R)
• M3: 811,419 km (0.093 R)
• M4: 1,161,179 km (0.075 R)
• M5: 1,627,326 km (0.098 R)
• M6: 2,265,211 km (0.092 R)
• M7: 2,636,363 km (0.1 R)
• M8: 3,543,674 km (0.07 R)
• M9: 5,761,762 km (0.051 R)
• M10: 6,184,675 km (0.072 R)
• M11: 7,002,676 km (0.104 R)
• M12: 8,540,542 km (0.036 R)
• M13: 8,825,975 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565.8

Radius: 14.3

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.99 AU - 3.05 AU

Year: 2624 Days

Day: 10.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 60,772,821 km

• M1: 177,872 km (0.069 R)
• M2: 656,136 km (0.076 R)
• M3: 2,037,224 km (0.04 R)
• M4: 3,384,053 km (0.077 R)
• M5: 4,200,708 km (0.06 R)
• M6: 5,378,941 km (0.115 R)
• M7: 6,045,848 km (0.075 R)
• M8: 6,547,899 km (0.112 R)
• M9: 7,163,943 km (0.063 R)
• M10: 9,490,190 km (0.069 R)
• M11: 10,998,585 km (0.115 R)
• M12: 12,034,850 km (0.102 R)
• M13: 13,222,507 km (0.095 R)
• M14: 14,301,556 km (0.086 R)
• M15: 15,244,921 km (0.078 R)
• M16: 16,840,232 km (0.114 R)
• M17: 17,625,172 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 897.3

Radius: 14.5

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 2.66 AU - 2.92 AU

Year: 3057 Days

Day: 10.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 60,772,821 km

• M1: 180,415 km (0.088 R)
• M2: 721,361 km (0.116 R)
• M3: 1,254,977 km (0.102 R)
• M4: 1,893,161 km (0.106 R)
• M5: 2,494,544 km (0.09 R)
• M6: 3,186,285 km (0.111 R)
• M7: 3,676,966 km (0.067 R)
• M8: 4,909,204 km (0.111 R)
• M9: 5,594,661 km (0.058 R)
• M10: 6,314,377 km (0.113 R)
• M11: 7,412,574 km (0.059 R)
• M12: 8,850,509 km (0.079 R)
• M13: 11,694,066 km (0.062 R)
• M14: 12,873,196 km (0.071 R)
• M15: 13,395,442 km (0.058 R)
• M16: 13,931,751 km (0.105 R)
• M17: 15,099,811 km (0.038 R)
• M18: 18,393,956 km (0.111 R)
• M19: 22,005,996 km (0.057 R)
• M20: 22,548,139 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.8

Radius: 14.1

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.63 AU - 3.55 AU

Year: 3563 Days

Day: 7.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 60,772,821 km

• M1: 175,927 km (0.119 R)
• M2: 708,645 km (0.075 R)
• M3: 1,384,827 km (0.112 R)
• M4: 1,872,068 km (0.097 R)
• M5: 2,682,140 km (0.059 R)
• M6: 3,377,022 km (0.1 R)
• M7: 4,655,037 km (0.043 R)
• M8: 5,663,476 km (0.12 R)
• M9: 6,534,585 km (0.083 R)
• M10: 7,099,017 km (0.073 R)
• M11: 8,041,933 km (0.099 R)
• M12: 9,730,444 km (0.098 R)
• M13: 10,218,283 km (0.099 R)
• M14: 13,102,380 km (0.114 R)
• M15: 14,002,809 km (0.048 R)
• M16: 16,151,334 km (0.116 R)
• M17: 16,894,686 km (0.096 R)
• M18: 18,697,490 km (0.104 R)
• M19: 20,229,671 km (0.073 R)
• M20: 22,753,537 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.5

Radius: 11.6

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 3.87 AU - 6.33 AU

Year: 7556 Days

Day: 14.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,772,821 km

• M1: 145,559 km (0.077 R)
• M2: 537,804 km (0.057 R)
• M3: 1,050,327 km (0.109 R)
• M4: 2,051,436 km (0.111 R)
• M5: 3,852,295 km (0.072 R)
• M6: 8,270,967 km (0.069 R)
• M7: 10,498,928 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 261.3

Radius: 7.1

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 5.72 AU - 8.14 AU

Year: 11968 Days

Day: 18.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,772,821 km

• M1: 93,499 km (0.09 R)
• M2: 356,492 km (0.101 R)
• M3: 622,028 km (0.077 R)
• M4: 1,051,673 km (0.114 R)
• M5: 1,652,308 km (0.027 R)
• M6: 2,372,024 km (0.047 R)
• M7: 2,842,509 km (0.041 R)
• M8: 5,649,264 km (0.11 R)
• M9: 6,244,664 km (0.1 R)
• M10: 6,522,318 km (0.092 R)
• M11: 9,451,294 km (0.106 R)
• M12: 9,725,358 km (0.112 R)
• M13: 10,579,412 km (0.093 R)
• M14: 11,585,906 km (0.105 R)
• M15: 14,681,086 km (0.089 R)
• M16: 19,073,280 km (0.045 R)
• M17: 19,807,207 km (0.025 R)
• M18: 20,789,167 km (0.11 R)
• M19: 29,550,666 km (0.119 R)
• M20: 31,536,129 km (0.047 R)
• M21: 33,187,390 km (0.119 R)
• M22: 33,715,022 km (0.037 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 522.7

Radius: 7.3

Gravity: 9.81 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 6.57 AU - 10.49 AU

Year: 16343 Days

Day: 17 Hours

Environment

Temp: -236 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,772,821 km

• M1: 100,380 km (0.104 R)
• M2: 334,650 km (0.104 R)
• M3: 745,745 km (0.118 R)
• M4: 1,194,689 km (0.085 R)
• M5: 1,525,300 km (0.101 R)
• M6: 1,951,504 km (0.114 R)
• M7: 2,921,946 km (0.062 R)
• M8: 8,235,363 km (0.097 R)
• M9: 10,464,670 km (0.112 R)
• M10: 14,068,633 km (0.108 R)
• M11: 19,255,490 km (0.079 R)
• M12: 20,549,960 km (0.075 R)
• M13: 22,271,682 km (0.086 R)
• M14: 27,578,816 km (0.038 R)
• M15: 28,119,164 km (0.039 R)
• M16: 32,579,125 km (0.099 R)
• M17: 34,040,995 km (0.093 R)
• M18: 39,912,413 km (0.099 R)
• M19: 47,343,089 km (0.095 R)
• M20: 52,612,524 km (0.099 R)
• M21: 54,452,279 km (0.119 R)
• M22: 59,867,123 km (0.105 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: 154 - 13,597 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit