🌌 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: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.47 AU - 0.55 AU

Year: 239 Days

Day: 22.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 2.8 °

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: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.53 AU - 0.73 AU

Year: 328 Days

Day: 23.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 13.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,029,804 km

• M1: 135,984 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.1

Radius: 10

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.9 AU - 1.1 AU

Year: 656 Days

Day: 7.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 47,029,804 km

• M1: 124,914 km (0.087 R)
• M2: 669,301 km (0.045 R)
• M3: 1,051,673 km (0.1 R)
• M4: 1,888,374 km (0.078 R)
• M5: 2,520,575 km (0.062 R)
• M6: 2,966,376 km (0.103 R)
• M7: 3,925,299 km (0.089 R)
• M8: 4,627,661 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.1

Radius: 14.5

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.87 AU - 1.17 AU

Year: 676 Days

Day: 10.5 Hours

Environment

Temp: -156 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 47,029,804 km

• M1: 180,565 km (0.12 R)
• M2: 639,980 km (0.056 R)
• M3: 1,129,614 km (0.081 R)
• M4: 1,734,887 km (0.11 R)
• M5: 3,079,472 km (0.09 R)
• M6: 3,846,161 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598.7

Radius: 12

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 3.2 AU - 3.68 AU

Year: 4185 Days

Day: 10.9 Hours

Environment

Temp: -201 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,029,804 km

• M1: 149,299 km (0.091 R)
• M2: 571,913 km (0.115 R)
• M3: 1,065,436 km (0.091 R)
• M4: 1,744,461 km (0.076 R)
• M5: 2,190,412 km (0.114 R)
• M6: 2,663,291 km (0.094 R)
• M7: 3,355,181 km (0.052 R)
• M8: 3,754,607 km (0.055 R)
• M9: 4,185,898 km (0.103 R)
• M10: 5,021,253 km (0.051 R)
• M11: 5,519,413 km (0.118 R)
• M12: 6,079,358 km (0.112 R)
• M13: 6,707,819 km (0.115 R)
• M14: 7,920,310 km (0.103 R)
• M15: 9,312,318 km (0.079 R)
• M16: 9,744,357 km (0.085 R)
• M17: 11,970,373 km (0.031 R)
• M18: 15,860,965 km (0.061 R)
• M19: 16,535,053 km (0.094 R)
• M20: 18,061,101 km (0.1 R)
• M21: 18,610,723 km (0.12 R)
• M22: 23,705,877 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.7

Radius: 14.9

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 4.42 AU - 5.1 AU

Year: 6813 Days

Day: 8.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 47,029,804 km

• M1: 185,501 km (0.032 R)
• M2: 930,200 km (0.081 R)
• M3: 1,627,774 km (0.041 R)
• M4: 2,158,996 km (0.115 R)
• M5: 2,734,799 km (0.104 R)
• M6: 3,350,394 km (0.076 R)
• M7: 4,705,003 km (0.111 R)
• M8: 5,654,650 km (0.088 R)
• M9: 6,497,036 km (0.088 R)
• M10: 7,529,859 km (0.102 R)
• M11: 8,238,953 km (0.091 R)
• M12: 9,198,025 km (0.08 R)
• M13: 9,834,564 km (0.101 R)
• M14: 16,709,633 km (0.079 R)
• M15: 20,652,435 km (0.063 R)
• M16: 21,230,930 km (0.093 R)
• M17: 26,172,447 km (0.098 R)
• M18: 27,366,387 km (0.11 R)
• M19: 29,134,634 km (0.041 R)
• M20: 31,072,226 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 104.1

Radius: 3.6

Gravity: 8.03 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 4.97 AU - 7.19 AU

Year: 9835 Days

Day: 24.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,029,804 km

• M1: 44,730 km (0.081 R)
• M2: 234,869 km (0.115 R)
• M3: 493,673 km (0.064 R)
• M4: 733,478 km (0.076 R)
• M5: 1,272,629 km (0.113 R)
• M6: 2,872,429 km (0.112 R)
• M7: 3,374,778 km (0.065 R)
• M8: 3,783,031 km (0.115 R)
• M9: 4,920,872 km (0.111 R)
• M10: 5,390,759 km (0.04 R)
• M11: 10,570,586 km (0.076 R)
• M12: 11,663,099 km (0.03 R)
• M13: 12,120,569 km (0.086 R)
• M14: 14,275,676 km (0.094 R)
• M15: 14,431,407 km (0.119 R)
• M16: 15,772,552 km (0.059 R)
• M17: 16,444,845 km (0.098 R)
• M18: 16,961,556 km (0.052 R)
• M19: 21,695,132 km (0.083 R)
• M20: 23,521,872 km (0.116 R)
• M21: 23,884,497 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 331.9

Radius: 6

Gravity: 9.22 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 5.96 AU - 9.4 AU

Year: 13962 Days

Day: 18.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,029,804 km

• M1: 107,710 km (0.097 R)
• M2: 371,900 km (0.101 R)
• M3: 631,153 km (0.094 R)
• M4: 853,157 km (0.103 R)
• M5: 1,127,669 km (0.119 R)
• M6: 1,777,372 km (0.087 R)
• M7: 2,019,571 km (0.097 R)
• M8: 2,247,110 km (0.119 R)
• M9: 2,903,096 km (0.116 R)
• M10: 5,235,028 km (0.117 R)
• M11: 5,838,954 km (0.114 R)
• M12: 6,525,758 km (0.088 R)
• M13: 7,801,828 km (0.07 R)
• M14: 8,409,345 km (0.112 R)
• M15: 11,984,136 km (0.083 R)
• M16: 12,733,023 km (0.043 R)
• M17: 14,969,511 km (0.108 R)
• M18: 20,931,884 km (0.043 R)
• M19: 23,846,200 km (0.11 R)
• M20: 27,215,144 km (0.107 R)
• M21: 32,182,541 km (0.082 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 415 - 19,024 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit