🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.64

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.5 AU - 0.7 AU

Year: 300 Days

Day: 24.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.8

Radius: 11.1

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.6 AU - 0.84 AU

Year: 394 Days

Day: 13.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 62,411,764 km

• M1: 138,378 km (0.115 R)
• M2: 616,493 km (0.092 R)
• M3: 1,190,201 km (0.103 R)
• M4: 1,966,913 km (0.083 R)
• M5: 2,486,765 km (0.037 R)
• M6: 3,128,690 km (0.043 R)
• M7: 4,105,714 km (0.088 R)
• M8: 4,658,178 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.8

Radius: 11.9

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.14 AU - 1.22 AU

Year: 828 Days

Day: 7.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,411,764 km

• M1: 151,094 km (0.116 R)
• M2: 604,675 km (0.104 R)
• M3: 1,237,324 km (0.06 R)
• M4: 1,792,930 km (0.106 R)
• M5: 2,170,366 km (0.091 R)
• M6: 2,647,882 km (0.059 R)
• M7: 3,025,916 km (0.106 R)
• M8: 3,454,364 km (0.115 R)
• M9: 4,189,339 km (0.113 R)
• M10: 4,586,072 km (0.074 R)
• M11: 5,228,595 km (0.033 R)
• M12: 6,135,906 km (0.04 R)
• M13: 7,355,279 km (0.108 R)
• M14: 7,763,082 km (0.029 R)
• M15: 8,943,260 km (0.077 R)
• M16: 9,353,008 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.4

Radius: 12.4

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.34 AU - 1.38 AU

Year: 1024 Days

Day: 9.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,411,764 km

• M1: 154,235 km (0.091 R)
• M2: 625,319 km (0.113 R)
• M3: 1,156,392 km (0.092 R)
• M4: 1,547,740 km (0.042 R)
• M5: 2,453,555 km (0.109 R)
• M6: 3,353,835 km (0.082 R)
• M7: 3,866,656 km (0.1 R)
• M8: 4,525,635 km (0.087 R)
• M9: 5,051,023 km (0.083 R)
• M10: 6,088,035 km (0.111 R)
• M11: 6,483,871 km (0.101 R)
• M12: 7,110,237 km (0.084 R)
• M13: 7,753,658 km (0.052 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.5

Radius: 14.8

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.42 AU - 1.94 AU

Year: 1406 Days

Day: 7.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,411,764 km

• M1: 184,155 km (0.097 R)
• M2: 684,709 km (0.101 R)
• M3: 1,362,837 km (0.103 R)
• M4: 2,656,260 km (0.092 R)
• M5: 3,453,616 km (0.046 R)
• M6: 4,005,633 km (0.044 R)
• M7: 5,088,422 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.6

Radius: 13.6

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.12 AU - 3.48 AU

Year: 3871 Days

Day: 6.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,411,764 km

• M1: 169,794 km (0.06 R)
• M2: 669,002 km (0.115 R)
• M3: 1,132,605 km (0.117 R)
• M4: 1,819,260 km (0.105 R)
• M5: 2,620,655 km (0.119 R)
• M6: 3,050,749 km (0.088 R)
• M7: 3,629,843 km (0.087 R)
• M8: 5,564,442 km (0.116 R)
• M9: 7,674,520 km (0.049 R)
• M10: 9,036,908 km (0.073 R)
• M11: 12,158,866 km (0.087 R)
• M12: 12,594,046 km (0.083 R)
• M13: 13,204,406 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 775

Radius: 6.5

Gravity: 18.34 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 5.02 AU - 8.12 AU

Year: 10873 Days

Day: 21.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 62,411,764 km

• M1: 83,027 km (0.07 R)
• M2: 335,398 km (0.095 R)
• M3: 774,019 km (0.117 R)
• M4: 1,591,721 km (0.11 R)
• M5: 1,958,685 km (0.111 R)
• M6: 2,974,454 km (0.106 R)
• M7: 3,715,263 km (0.092 R)
• M8: 4,302,734 km (0.074 R)
• M9: 4,511,872 km (0.028 R)
• M10: 5,696,687 km (0.099 R)
• M11: 6,246,908 km (0.077 R)
• M12: 6,554,481 km (0.117 R)
• M13: 7,538,386 km (0.084 R)
• M14: 8,065,569 km (0.034 R)
• M15: 8,806,527 km (0.111 R)
• M16: 9,047,081 km (0.076 R)
• M17: 9,391,306 km (0.098 R)
• M18: 10,476,488 km (0.055 R)
• M19: 14,899,350 km (0.078 R)
• M20: 16,443,200 km (0.098 R)
• M21: 17,555,161 km (0.084 R)
• M22: 18,637,352 km (0.088 R)
• M23: 18,954,499 km (0.119 R)
• M24: 20,848,707 km (0.068 R)
• M25: 23,781,873 km (0.116 R)
• M26: 24,817,688 km (0.107 R)
• M27: 25,883,124 km (0.097 R)
• M28: 27,080,057 km (0.104 R)
• M29: 29,583,577 km (0.071 R)
• M30: 31,113,066 km (0.106 R)
• M31: 32,579,723 km (0.117 R)
• M32: 34,210,340 km (0.047 R)
• M33: 34,805,590 km (0.089 R)
• M34: 44,019,772 km (0.103 R)
• M35: 45,435,566 km (0.094 R)
• M36: 47,763,459 km (0.047 R)
• M37: 48,059,962 km (0.118 R)
• M38: 50,017,001 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 456.8

Radius: 3.3

Gravity: 41.95 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 7.35 AU - 11.17 AU

Year: 18194 Days

Day: 20.6 Hours

Environment

Temp: -235 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 62,411,764 km

• M1: 43,084 km (0.1 R)
• M2: 146,157 km (0.074 R)
• M3: 255,812 km (0.09 R)
• M4: 696,079 km (0.072 R)
• M5: 1,162,824 km (0.116 R)
• M6: 1,562,251 km (0.089 R)
• M7: 2,242,023 km (0.107 R)
• M8: 2,535,983 km (0.041 R)
• M9: 3,463,490 km (0.112 R)
• M10: 3,712,421 km (0.083 R)
• M11: 4,246,036 km (0.058 R)
• M12: 4,531,170 km (0.031 R)
• M13: 5,838,954 km (0.064 R)
• M14: 6,475,344 km (0.039 R)
• M15: 7,156,613 km (0.099 R)
• M16: 9,591,916 km (0.041 R)
• M17: 10,819,217 km (0.09 R)
• M18: 11,112,130 km (0.101 R)
• M19: 17,487,841 km (0.096 R)
• M20: 18,716,040 km (0.095 R)
• M21: 20,088,152 km (0.11 R)
• M22: 20,619,523 km (0.108 R)
• M23: 20,888,799 km (0.072 R)
• M24: 22,176,089 km (0.114 R)
• M25: 24,806,319 km (0.096 R)
• M26: 26,248,592 km (0.119 R)
• M27: 26,883,485 km (0.119 R)
• M28: 31,379,799 km (0.066 R)
• M29: 32,094,727 km (0.056 R)
• M30: 33,310,359 km (0.108 R)
• M31: 37,940,264 km (0.092 R)
• M32: 43,567,388 km (0.112 R)
• M33: 47,196,931 km (0.053 R)
• M34: 47,508,245 km (0.087 R)
• M35: 51,515,224 km (0.027 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: 491 - 11,441 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit