🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.87

Radius: 0.95

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 34.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 37.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 36.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 43.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.45 AU - 0.73 AU

Year: 297 Days

Day: 16.1 Hours

Environment

Temp: -124 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733.5

Radius: 9.3

Gravity: 8.48 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.96 AU - 1.14 AU

Year: 706 Days

Day: 13.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 60,394,760 km

• M1: 116,836 km (0.119 R)
• M2: 527,332 km (0.091 R)
• M3: 914,342 km (0.06 R)
• M4: 1,694,046 km (0.041 R)
• M5: 3,022,176 km (0.083 R)
• M6: 3,503,582 km (0.118 R)
• M7: 3,901,213 km (0.102 R)
• M8: 4,376,336 km (0.088 R)
• M9: 6,631,524 km (0.105 R)
• M10: 6,997,889 km (0.059 R)
• M11: 7,446,084 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.8

Radius: 14.5

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.04 AU - 1.42 AU

Year: 895 Days

Day: 14.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 60,394,760 km

• M1: 183,557 km (0.116 R)
• M2: 1,001,707 km (0.082 R)
• M3: 1,960,181 km (0.094 R)
• M4: 3,940,857 km (0.096 R)
• M5: 4,688,996 km (0.061 R)
• M6: 5,336,904 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.2

Radius: 9.8

Gravity: 7.29 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.66 AU - 1.98 AU

Year: 1611 Days

Day: 13.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 60,394,760 km

• M1: 121,922 km (0.104 R)
• M2: 474,674 km (0.115 R)
• M3: 816,655 km (0.1 R)
• M4: 1,171,800 km (0.113 R)
• M5: 1,820,008 km (0.109 R)
• M6: 2,316,523 km (0.114 R)
• M7: 2,915,812 km (0.092 R)
• M8: 3,854,539 km (0.071 R)
• M9: 4,737,166 km (0.107 R)
• M10: 5,130,160 km (0.108 R)
• M11: 5,864,835 km (0.051 R)
• M12: 7,765,625 km (0.104 R)
• M13: 9,681,376 km (0.089 R)
• M14: 10,487,858 km (0.106 R)
• M15: 10,801,565 km (0.075 R)
• M16: 11,121,555 km (0.096 R)
• M17: 11,930,729 km (0.112 R)
• M18: 12,272,710 km (0.093 R)
• M19: 13,419,827 km (0.116 R)
• M20: 13,789,932 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.2

Radius: 8.2

Gravity: 11.19 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 3.13 AU - 4.65 AU

Year: 5033 Days

Day: 6.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 60,394,760 km

• M1: 102,026 km (0.116 R)
• M2: 438,621 km (0.054 R)
• M3: 772,075 km (0.095 R)
• M4: 1,049,130 km (0.111 R)
• M5: 1,606,083 km (0.116 R)
• M6: 1,867,879 km (0.11 R)
• M7: 2,962,935 km (0.081 R)
• M8: 3,682,052 km (0.111 R)
• M9: 4,118,579 km (0.09 R)
• M10: 4,538,051 km (0.115 R)
• M11: 4,877,788 km (0.116 R)
• M12: 6,313,928 km (0.065 R)
• M13: 6,872,227 km (0.104 R)
• M14: 7,826,362 km (0.075 R)
• M15: 9,822,147 km (0.11 R)
• M16: 10,845,397 km (0.099 R)
• M17: 11,840,073 km (0.118 R)
• M18: 13,417,882 km (0.071 R)
• M19: 14,229,600 km (0.102 R)
• M20: 15,246,417 km (0.116 R)
• M21: 18,259,019 km (0.087 R)
• M22: 18,521,264 km (0.069 R)
• M23: 19,801,073 km (0.076 R)
• M24: 20,357,278 km (0.04 R)
• M25: 22,536,171 km (0.032 R)
• M26: 23,915,613 km (0.083 R)
• M27: 26,338,201 km (0.12 R)
• M28: 26,841,748 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.5

Radius: 13

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 3.3 AU - 5.06 AU

Year: 5606 Days

Day: 9.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,394,760 km

• M1: 163,810 km (0.071 R)
• M2: 577,897 km (0.107 R)
• M3: 1,165,517 km (0.068 R)
• M4: 1,843,345 km (0.077 R)
• M5: 2,261,920 km (0.029 R)
• M6: 2,974,903 km (0.072 R)
• M7: 5,755,030 km (0.094 R)
• M8: 7,611,988 km (0.059 R)
• M9: 8,044,476 km (0.078 R)
• M10: 8,462,901 km (0.063 R)
• M11: 9,441,720 km (0.067 R)
• M12: 12,954,577 km (0.112 R)
• M13: 13,614,603 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 57.6

Radius: 7.4

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.44 AU - 7.08 AU

Year: 11530 Days

Day: 16 Hours

Environment

Temp: -231 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,394,760 km

• M1: 97,239 km (0.05 R)
• M2: 409,898 km (0.092 R)
• M3: 838,646 km (0.118 R)
• M4: 3,124,800 km (0.118 R)
• M5: 5,546,640 km (0.11 R)
• M6: 6,674,010 km (0.119 R)
• M7: 8,048,216 km (0.07 R)
• M8: 8,856,194 km (0.109 R)
• M9: 11,259,783 km (0.038 R)
• M10: 20,375,978 km (0.102 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 849.5

Radius: 5.1

Gravity: 32.66 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.32 AU - 8.1 AU

Year: 12700 Days

Day: 17.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 60,394,760 km

• M1: 92,003 km (0.054 R)
• M2: 262,993 km (0.09 R)
• M3: 583,132 km (0.082 R)
• M4: 907,909 km (0.07 R)
• M5: 1,250,937 km (0.084 R)
• M6: 2,372,473 km (0.08 R)
• M7: 3,587,507 km (0.062 R)
• M8: 4,533,264 km (0.108 R)
• M9: 5,974,191 km (0.066 R)
• M10: 6,693,906 km (0.09 R)
• M11: 7,074,783 km (0.119 R)
• M12: 8,161,013 km (0.082 R)
• M13: 8,644,812 km (0.111 R)
• M14: 10,377,305 km (0.045 R)
• M15: 10,601,851 km (0.093 R)
• M16: 11,002,774 km (0.097 R)
• M17: 11,653,076 km (0.092 R)
• M18: 12,018,394 km (0.105 R)
• M19: 12,707,890 km (0.114 R)
• M20: 12,965,049 km (0.067 R)
• M21: 13,160,274 km (0.108 R)
• M22: 15,804,865 km (0.071 R)
• M23: 16,102,416 km (0.032 R)
• M24: 17,725,702 km (0.069 R)
• M25: 24,116,822 km (0.087 R)
• M26: 26,757,075 km (0.087 R)
• M27: 28,255,597 km (0.109 R)
• M28: 28,474,160 km (0.057 R)
• M29: 30,263,200 km (0.11 R)
• M30: 30,492,085 km (0.093 R)
• M31: 32,843,764 km (0.114 R)
• M32: 36,078,070 km (0.116 R)
• M33: 39,518,372 km (0.069 R)
• M34: 43,316,063 km (0.072 R)
• M35: 45,079,224 km (0.117 R)
• M36: 49,695,365 km (0.106 R)
• M37: 55,810,178 km (0.058 R)
• M38: 58,602,871 km (0.094 R)
• M39: 59,494,325 km (0.067 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 196 - 17,186 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit