🌌 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: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.45 AU - 0.65 AU

Year: 268 Days

Day: 13.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 28 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.48 AU - 0.78 AU

Year: 328 Days

Day: 26.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 9.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.4

Radius: 9.3

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.56 AU - 0.92 AU

Year: 418 Days

Day: 6.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 34,093,658 km

• M1: 115,789 km (0.118 R)
• M2: 481,256 km (0.04 R)
• M3: 834,158 km (0.11 R)
• M4: 1,349,672 km (0.087 R)
• M5: 1,691,952 km (0.097 R)
• M6: 2,083,749 km (0.101 R)
• M7: 2,412,116 km (0.098 R)
• M8: 2,921,796 km (0.073 R)
• M9: 3,501,937 km (0.096 R)
• M10: 3,903,906 km (0.107 R)
• M11: 4,294,506 km (0.119 R)
• M12: 5,346,179 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 132.6

Radius: 10.4

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.69 AU - 0.85 AU

Year: 443 Days

Day: 5.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 34,093,658 km

• M1: 129,402 km (0.096 R)
• M2: 522,695 km (0.085 R)
• M3: 1,077,553 km (0.119 R)
• M4: 1,500,766 km (0.061 R)
• M5: 1,993,092 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.2

Radius: 9.5

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.42 AU - 3.76 AU

Year: 4462 Days

Day: 11.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 34,093,658 km

• M1: 118,182 km (0.087 R)
• M2: 471,682 km (0.106 R)
• M3: 931,396 km (0.108 R)
• M4: 1,334,862 km (0.094 R)
• M5: 1,841,550 km (0.073 R)
• M6: 2,654,913 km (0.085 R)
• M7: 3,612,938 km (0.087 R)
• M8: 4,034,206 km (0.108 R)
• M9: 4,533,115 km (0.066 R)
• M10: 7,195,807 km (0.037 R)
• M11: 8,333,649 km (0.063 R)
• M12: 11,378,264 km (0.06 R)
• M13: 13,476,225 km (0.107 R)
• M14: 14,691,259 km (0.119 R)
• M15: 15,351,285 km (0.065 R)
• M16: 16,949,738 km (0.047 R)
• M17: 17,450,292 km (0.039 R)
• M18: 18,306,291 km (0.102 R)
• M19: 20,163,699 km (0.11 R)
• M20: 20,978,708 km (0.097 R)
• M21: 21,620,632 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.2

Radius: 14.6

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 3.94 AU - 6.16 AU

Year: 7445 Days

Day: 13.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 34,093,658 km

• M1: 181,612 km (0.093 R)
• M2: 720,613 km (0.095 R)
• M3: 1,228,797 km (0.111 R)
• M4: 2,996,745 km (0.051 R)
• M5: 3,502,685 km (0.094 R)
• M6: 4,633,046 km (0.049 R)
• M7: 5,860,646 km (0.069 R)
• M8: 7,450,722 km (0.06 R)
• M9: 10,158,443 km (0.105 R)
• M10: 12,056,541 km (0.099 R)
• M11: 12,720,157 km (0.119 R)
• M12: 17,998,868 km (0.027 R)
• M13: 19,385,640 km (0.064 R)
• M14: 20,921,262 km (0.093 R)
• M15: 22,125,226 km (0.106 R)
• M16: 24,671,082 km (0.074 R)
• M17: 25,561,489 km (0.086 R)
• M18: 26,197,579 km (0.103 R)
• M19: 27,312,382 km (0.101 R)
• M20: 33,044,075 km (0.103 R)
• M21: 36,704,586 km (0.094 R)
• M22: 37,165,945 km (0.076 R)
• M23: 38,573,213 km (0.092 R)
• M24: 41,743,790 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.8

Radius: 8

Gravity: 10.47 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 4.07 AU - 6.77 AU

Year: 8278 Days

Day: 13.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 34,093,658 km

• M1: 99,632 km (0.102 R)
• M2: 409,749 km (0.052 R)
• M3: 809,773 km (0.113 R)
• M4: 1,218,026 km (0.108 R)
• M5: 1,644,529 km (0.105 R)
• M6: 2,035,578 km (0.12 R)
• M7: 2,983,430 km (0.108 R)
• M8: 3,712,720 km (0.06 R)
• M9: 4,015,057 km (0.051 R)
• M10: 5,488,447 km (0.12 R)
• M11: 5,848,230 km (0.041 R)
• M12: 6,651,720 km (0.109 R)
• M13: 8,824,928 km (0.119 R)
• M14: 9,411,501 km (0.116 R)
• M15: 10,023,805 km (0.066 R)
• M16: 10,413,508 km (0.104 R)
• M17: 12,404,805 km (0.113 R)
• M18: 14,823,952 km (0.093 R)
• M19: 16,444,247 km (0.094 R)
• M20: 18,036,118 km (0.03 R)
• M21: 19,501,578 km (0.11 R)
• M22: 20,651,687 km (0.118 R)
• M23: 22,501,913 km (0.048 R)
• M24: 24,635,329 km (0.092 R)
• M25: 25,256,160 km (0.049 R)
• M26: 26,807,041 km (0.116 R)
• M27: 29,300,389 km (0.081 R)
• M28: 30,603,236 km (0.119 R)
• M29: 31,114,412 km (0.081 R)
• M30: 32,364,602 km (0.038 R)
• M31: 34,964,912 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.3

Radius: 10.5

Gravity: 6.17 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 5.43 AU - 6.07 AU

Year: 9045 Days

Day: 9.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,093,658 km

• M1: 130,599 km (0.108 R)
• M2: 561,590 km (0.074 R)
• M3: 1,334,712 km (0.1 R)
• M4: 2,228,709 km (0.116 R)
• M5: 2,921,048 km (0.102 R)
• M6: 3,318,081 km (0.055 R)
• M7: 6,329,187 km (0.108 R)
• M8: 7,672,576 km (0.097 R)
• M9: 8,259,897 km (0.098 R)
• M10: 9,477,474 km (0.029 R)
• M11: 11,495,699 km (0.106 R)
• M12: 12,548,419 km (0.109 R)
• M13: 13,010,527 km (0.115 R)
• M14: 14,717,588 km (0.082 R)
• M15: 16,500,496 km (0.066 R)
• M16: 39,710,755 km (0.052 R)
• M17: 42,233,723 km (0.105 R)

Asteroid Belt

Center: 7.32 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 8.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 81.8

Radius: 7.2

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 7.1 AU - 10.66 AU

Year: 17359 Days

Day: 20 Hours

Environment

Temp: -236 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,093,658 km

• M1: 180,864 km (0.075 R)
• M2: 1,333,964 km (0.05 R)
• M3: 1,798,017 km (0.116 R)
• M4: 2,091,229 km (0.12 R)
• M5: 3,597,530 km (0.062 R)
• M6: 5,473,786 km (0.108 R)
• M7: 8,311,957 km (0.056 R)
• M8: 9,954,691 km (0.096 R)
• M9: 10,734,395 km (0.077 R)
• M10: 14,263,559 km (0.083 R)
• M11: 18,906,927 km (0.083 R)
• M12: 20,243,883 km (0.104 R)
• M13: 29,520,896 km (0.089 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 512 - 12,972 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit