🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 263.2

Radius: 14.7

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.56 AU - 0.76 AU

Year: 358 Days

Day: 9.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 76,420,788 km

• M1: 183,557 km (0.111 R)
• M2: 686,056 km (0.12 R)
• M3: 1,144,125 km (0.114 R)
• M4: 1,744,162 km (0.059 R)
• M5: 2,211,206 km (0.1 R)
• M6: 2,931,071 km (0.077 R)
• M7: 3,559,981 km (0.042 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.4

Radius: 11.8

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.65 AU - 0.83 AU

Year: 424 Days

Day: 11.6 Hours

Environment

Temp: -163 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 76,420,788 km

• M1: 148,401 km (0.094 R)
• M2: 616,044 km (0.11 R)
• M3: 1,001,558 km (0.116 R)
• M4: 1,535,921 km (0.096 R)
• M5: 1,904,830 km (0.098 R)
• M6: 2,386,385 km (0.083 R)
• M7: 2,807,653 km (0.085 R)
• M8: 4,490,030 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.7

Radius: 12

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.58 AU - 0.9 AU

Year: 424 Days

Day: 14.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,420,788 km

• M1: 149,299 km (0.058 R)
• M2: 531,970 km (0.093 R)
• M3: 1,106,725 km (0.117 R)
• M4: 1,774,081 km (0.107 R)
• M5: 2,192,506 km (0.055 R)
• M6: 2,611,680 km (0.096 R)
• M7: 3,042,970 km (0.119 R)
• M8: 3,720,349 km (0.069 R)
• M9: 4,101,824 km (0.086 R)
• M10: 4,973,232 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.2

Radius: 9.7

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.27 AU - 1.95 AU

Year: 1362 Days

Day: 13.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 76,420,788 km

• M1: 120,875 km (0.06 R)
• M2: 429,346 km (0.112 R)
• M3: 778,358 km (0.072 R)
• M4: 1,619,696 km (0.105 R)
• M5: 1,992,195 km (0.07 R)
• M6: 2,665,535 km (0.11 R)
• M7: 3,748,025 km (0.092 R)
• M8: 6,108,231 km (0.108 R)
• M9: 6,588,440 km (0.07 R)
• M10: 9,083,284 km (0.084 R)
• M11: 10,332,875 km (0.063 R)
• M12: 10,719,435 km (0.054 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276

Radius: 8.6

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.95 AU - 2.53 AU

Year: 2236 Days

Day: 11.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 76,420,788 km

• M1: 107,112 km (0.117 R)
• M2: 384,766 km (0.12 R)
• M3: 1,135,298 km (0.054 R)
• M4: 1,546,244 km (0.105 R)
• M5: 2,098,709 km (0.048 R)
• M6: 3,642,559 km (0.092 R)
• M7: 5,242,508 km (0.06 R)
• M8: 5,541,704 km (0.107 R)
• M9: 7,057,280 km (0.102 R)
• M10: 9,072,213 km (0.113 R)
• M11: 10,645,235 km (0.047 R)
• M12: 10,952,808 km (0.049 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 964.7

Radius: 10.2

Gravity: 9.27 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.45 AU - 3.07 AU

Year: 3058 Days

Day: 7.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 76,420,788 km

• M1: 126,859 km (0.09 R)
• M2: 487,988 km (0.082 R)
• M3: 990,787 km (0.107 R)
• M4: 1,500,467 km (0.106 R)
• M5: 2,759,632 km (0.069 R)
• M6: 3,104,904 km (0.097 R)
• M7: 4,075,495 km (0.066 R)
• M8: 4,983,404 km (0.085 R)
• M9: 5,472,141 km (0.086 R)
• M10: 5,964,467 km (0.105 R)
• M11: 6,881,502 km (0.115 R)
• M12: 7,924,050 km (0.06 R)
• M13: 10,650,172 km (0.111 R)
• M14: 12,315,794 km (0.085 R)
• M15: 14,098,103 km (0.059 R)
• M16: 15,235,945 km (0.096 R)
• M17: 17,170,844 km (0.042 R)
• M18: 17,576,553 km (0.086 R)
• M19: 24,095,430 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 511.2

Radius: 13.1

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.62 AU - 4.1 AU

Year: 4107 Days

Day: 14.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 74.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,420,788 km

• M1: 164,558 km (0.068 R)
• M2: 572,661 km (0.119 R)
• M3: 1,994,588 km (0.062 R)
• M4: 2,577,422 km (0.115 R)
• M5: 3,235,802 km (0.095 R)
• M6: 4,675,233 km (0.049 R)
• M7: 5,290,977 km (0.085 R)
• M8: 6,715,448 km (0.031 R)
• M9: 7,148,085 km (0.108 R)
• M10: 8,702,707 km (0.102 R)
• M11: 12,287,820 km (0.104 R)
• M12: 14,919,695 km (0.103 R)
• M13: 17,097,092 km (0.087 R)
• M14: 23,596,072 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 213.7

Radius: 6.1

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 7.65 AU - 8.41 AU

Year: 15174 Days

Day: 15.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 76,420,788 km

• M1: 76,445 km (0.041 R)
• M2: 967,001 km (0.108 R)
• M3: 2,757,089 km (0.059 R)
• M4: 4,814,957 km (0.088 R)
• M5: 6,241,373 km (0.058 R)
• M6: 9,193,836 km (0.091 R)
• M7: 11,100,012 km (0.101 R)
• M8: 11,789,808 km (0.067 R)
• M9: 13,431,346 km (0.09 R)
• M10: 20,725,887 km (0.077 R)
• M11: 29,879,781 km (0.098 R)
• M12: 30,387,217 km (0.086 R)
• M13: 30,797,265 km (0.115 R)
• M14: 31,419,293 km (0.069 R)
• M15: 35,441,381 km (0.105 R)
• M16: 35,668,172 km (0.114 R)
• M17: 35,895,710 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 773.6

Radius: 3.9

Gravity: 50.86 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 8.76 AU - 9.86 AU

Year: 18943 Days

Day: 21.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 76,420,788 km

• M1: 83,326 km (0.068 R)
• M2: 501,302 km (0.119 R)
• M3: 765,941 km (0.095 R)
• M4: 1,241,812 km (0.107 R)
• M5: 1,585,438 km (0.107 R)
• M6: 1,779,467 km (0.032 R)
• M7: 2,090,032 km (0.09 R)
• M8: 4,011,916 km (0.119 R)
• M9: 4,140,719 km (0.085 R)
• M10: 4,305,726 km (0.043 R)
• M11: 5,047,133 km (0.092 R)
• M12: 6,961,687 km (0.107 R)
• M13: 11,875,079 km (0.111 R)
• M14: 13,389,009 km (0.108 R)
• M15: 14,043,799 km (0.119 R)
• M16: 18,426,867 km (0.108 R)
• M17: 19,236,192 km (0.114 R)
• M18: 19,788,806 km (0.056 R)
• M19: 21,313,957 km (0.104 R)
• M20: 25,028,621 km (0.042 R)
• M21: 27,614,570 km (0.075 R)
• M22: 34,644,024 km (0.096 R)
• M23: 38,567,528 km (0.114 R)
• M24: 42,003,941 km (0.075 R)
• M25: 48,795,235 km (0.118 R)
• M26: 58,554,252 km (0.103 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 514 - 12,639 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit