🌌 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: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 16.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 8.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.94

Radius: 1.3

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.5 AU - 0.78 AU

Year: 331 Days

Day: 30.4 Hours

Environment

Temp: -141 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.7

Radius: 12.4

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.62 AU - 0.92 AU

Year: 436 Days

Day: 8.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,859,983 km

• M1: 169,644 km (0.046 R)
• M2: 752,328 km (0.106 R)
• M3: 1,178,682 km (0.034 R)
• M4: 1,629,121 km (0.056 R)
• M5: 2,267,904 km (0.037 R)
• M6: 3,057,481 km (0.103 R)
• M7: 3,510,763 km (0.051 R)
• M8: 4,022,687 km (0.102 R)
• M9: 4,674,933 km (0.115 R)
• M10: 5,181,023 km (0.078 R)
• M11: 6,303,456 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.5

Radius: 10.3

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.82 AU - 1.04 AU

Year: 579 Days

Day: 9.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,859,983 km

• M1: 128,056 km (0.102 R)
• M2: 523,144 km (0.102 R)
• M3: 866,022 km (0.087 R)
• M4: 1,464,713 km (0.066 R)
• M5: 2,313,531 km (0.083 R)
• M6: 2,888,585 km (0.109 R)
• M7: 3,776,000 km (0.063 R)
• M8: 4,589,363 km (0.073 R)
• M9: 4,985,050 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.3

Radius: 9.2

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.46 AU - 3.28 AU

Year: 3139 Days

Day: 13.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,859,983 km

• M1: 119,678 km (0.084 R)
• M2: 541,843 km (0.113 R)
• M3: 1,809,536 km (0.119 R)
• M4: 2,218,985 km (0.1 R)
• M5: 3,140,508 km (0.098 R)
• M6: 4,350,456 km (0.096 R)
• M7: 4,747,339 km (0.066 R)
• M8: 6,151,315 km (0.109 R)
• M9: 7,555,889 km (0.092 R)
• M10: 9,635,599 km (0.072 R)
• M11: 10,565,350 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187.8

Radius: 12.7

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 3.9 AU - 4.56 AU

Year: 5617 Days

Day: 14.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 73,859,983 km

• M1: 160,369 km (0.088 R)
• M2: 698,173 km (0.105 R)
• M3: 1,107,323 km (0.071 R)
• M4: 1,545,346 km (0.042 R)
• M5: 1,950,307 km (0.111 R)
• M6: 2,965,479 km (0.103 R)
• M7: 3,716,310 km (0.115 R)
• M8: 5,344,384 km (0.115 R)
• M9: 6,070,831 km (0.037 R)
• M10: 6,744,770 km (0.038 R)
• M11: 7,946,340 km (0.103 R)
• M12: 8,410,841 km (0.091 R)
• M13: 8,858,288 km (0.111 R)
• M14: 9,578,004 km (0.049 R)
• M15: 10,181,481 km (0.062 R)
• M16: 10,611,127 km (0.109 R)
• M17: 11,175,260 km (0.106 R)
• M18: 12,059,084 km (0.056 R)
• M19: 12,988,835 km (0.057 R)
• M20: 19,840,717 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32

Radius: 9.8

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 4.39 AU - 4.97 AU

Year: 6537 Days

Day: 8.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 73,859,983 km

• M1: 121,922 km (0.119 R)
• M2: 445,951 km (0.102 R)
• M3: 921,822 km (0.048 R)
• M4: 1,400,386 km (0.111 R)
• M5: 2,083,300 km (0.079 R)
• M6: 2,700,690 km (0.096 R)
• M7: 4,990,136 km (0.089 R)
• M8: 6,258,128 km (0.085 R)
• M9: 7,172,320 km (0.027 R)
• M10: 8,314,949 km (0.076 R)
• M11: 9,050,522 km (0.114 R)
• M12: 11,769,313 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 573.2

Radius: 6.6

Gravity: 13.16 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 7.62 AU - 12.7 AU

Year: 20910 Days

Day: 24.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 73,859,983 km

• M1: 107,411 km (0.108 R)
• M2: 384,317 km (0.056 R)
• M3: 1,076,656 km (0.073 R)
• M4: 1,956,890 km (0.078 R)
• M5: 2,685,581 km (0.055 R)
• M6: 2,905,789 km (0.066 R)
• M7: 3,758,946 km (0.052 R)
• M8: 4,098,533 km (0.116 R)
• M9: 8,190,483 km (0.096 R)
• M10: 9,084,779 km (0.025 R)
• M11: 11,128,137 km (0.108 R)
• M12: 16,258,297 km (0.103 R)
• M13: 19,787,460 km (0.119 R)
• M14: 20,530,961 km (0.045 R)
• M15: 22,172,499 km (0.07 R)
• M16: 22,671,557 km (0.115 R)
• M17: 30,343,684 km (0.112 R)
• M18: 31,456,842 km (0.031 R)
• M19: 33,241,993 km (0.044 R)
• M20: 39,000,913 km (0.096 R)
• M21: 40,021,320 km (0.07 R)
• M22: 41,208,977 km (0.071 R)
• M23: 41,509,520 km (0.072 R)
• M24: 50,359,730 km (0.063 R)
• M25: 54,949,093 km (0.091 R)
• M26: 58,095,884 km (0.119 R)
• M27: 59,617,444 km (0.081 R)
• M28: 61,752,804 km (0.043 R)
• M29: 69,947,327 km (0.12 R)
• M30: 73,197,939 km (0.052 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 416 - 18,075 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit