🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.55 AU - 0.73 AU

Year: 336 Days

Day: 14.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,858,905 km

• M1: 43,234 km (0.11 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.59 AU - 0.75 AU

Year: 360 Days

Day: 14.1 Hours

Environment

Temp: -128 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.6

Radius: 10.7

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.56 AU - 0.82 AU

Year: 376 Days

Day: 5.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,858,905 km

• M1: 132,993 km (0.115 R)
• M2: 499,507 km (0.087 R)
• M3: 969,993 km (0.107 R)
• M4: 1,657,544 km (0.076 R)
• M5: 2,114,416 km (0.03 R)
• M6: 2,464,775 km (0.093 R)
• M7: 2,834,730 km (0.104 R)
• M8: 3,629,992 km (0.049 R)
• M9: 3,999,798 km (0.065 R)
• M10: 4,608,512 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.5

Radius: 14.1

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.92 AU - 1.14 AU

Year: 686 Days

Day: 12.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,858,905 km

• M1: 176,525 km (0.075 R)
• M2: 854,204 km (0.105 R)
• M3: 1,635,105 km (0.072 R)
• M4: 2,176,799 km (0.096 R)
• M5: 2,894,420 km (0.085 R)
• M6: 3,487,276 km (0.075 R)
• M7: 4,821,839 km (0.117 R)
• M8: 5,606,180 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 788.7

Radius: 10.7

Gravity: 6.89 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.11 AU - 1.79 AU

Year: 1145 Days

Day: 10.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,858,905 km

• M1: 133,142 km (0.097 R)
• M2: 894,146 km (0.113 R)
• M3: 1,444,966 km (0.057 R)
• M4: 2,454,602 km (0.089 R)
• M5: 3,365,354 km (0.105 R)
• M6: 3,948,486 km (0.051 R)
• M7: 4,709,491 km (0.096 R)
• M8: 5,650,162 km (0.111 R)
• M9: 6,498,831 km (0.085 R)
• M10: 7,252,206 km (0.092 R)
• M11: 7,821,425 km (0.072 R)
• M12: 10,337,512 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721

Radius: 10.6

Gravity: 6.42 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 2.01 AU - 2.37 AU

Year: 2126 Days

Day: 7.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 31,858,905 km

• M1: 133,441 km (0.099 R)
• M2: 539,300 km (0.054 R)
• M3: 1,019,210 km (0.115 R)
• M4: 1,363,734 km (0.065 R)
• M5: 1,744,760 km (0.035 R)
• M6: 2,640,253 km (0.081 R)
• M7: 3,031,002 km (0.088 R)
• M8: 3,512,408 km (0.109 R)
• M9: 3,929,936 km (0.108 R)
• M10: 4,482,999 km (0.058 R)
• M11: 5,409,459 km (0.116 R)
• M12: 6,619,257 km (0.111 R)
• M13: 7,060,122 km (0.066 R)
• M14: 8,727,390 km (0.106 R)
• M15: 9,258,313 km (0.055 R)
• M16: 9,670,455 km (0.101 R)
• M17: 10,642,841 km (0.085 R)
• M18: 10,981,082 km (0.091 R)
• M19: 13,078,145 km (0.08 R)
• M20: 13,641,680 km (0.082 R)
• M21: 14,357,207 km (0.103 R)
• M22: 15,814,739 km (0.073 R)
• M23: 16,755,560 km (0.102 R)
• M24: 17,317,001 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.1

Radius: 14.4

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.47 AU - 2.97 AU

Year: 2943 Days

Day: 5.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 31,858,905 km

• M1: 179,069 km (0.101 R)
• M2: 668,254 km (0.116 R)
• M3: 1,380,190 km (0.029 R)
• M4: 2,322,357 km (0.095 R)
• M5: 3,244,329 km (0.118 R)
• M6: 4,863,876 km (0.076 R)
• M7: 5,439,528 km (0.106 R)
• M8: 5,949,059 km (0.107 R)
• M9: 6,941,192 km (0.086 R)
• M10: 7,905,948 km (0.097 R)
• M11: 8,385,858 km (0.086 R)
• M12: 10,221,424 km (0.111 R)
• M13: 11,470,267 km (0.118 R)
• M14: 13,290,574 km (0.047 R)
• M15: 15,721,091 km (0.112 R)
• M16: 16,704,697 km (0.108 R)
• M17: 21,778,907 km (0.103 R)
• M18: 23,279,074 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 775.9

Radius: 13.5

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.13 AU - 4.71 AU

Year: 5091 Days

Day: 7.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 31,858,905 km

• M1: 167,849 km (0.072 R)
• M2: 718,519 km (0.106 R)
• M3: 1,167,911 km (0.074 R)
• M4: 1,597,705 km (0.036 R)
• M5: 2,091,528 km (0.092 R)
• M6: 2,776,536 km (0.061 R)
• M7: 4,297,947 km (0.093 R)
• M8: 5,469,298 km (0.107 R)
• M9: 5,944,720 km (0.118 R)
• M10: 6,610,580 km (0.086 R)
• M11: 7,647,892 km (0.038 R)
• M12: 8,592,902 km (0.057 R)
• M13: 9,320,396 km (0.116 R)
• M14: 11,947,335 km (0.09 R)
• M15: 12,546,923 km (0.085 R)
• M16: 13,061,988 km (0.08 R)
• M17: 14,189,657 km (0.08 R)
• M18: 16,638,275 km (0.099 R)
• M19: 19,018,377 km (0.091 R)
• M20: 20,114,930 km (0.053 R)
• M21: 20,821,331 km (0.101 R)
• M22: 22,509,094 km (0.059 R)
• M23: 23,040,316 km (0.119 R)
• M24: 29,450,734 km (0.104 R)
• M25: 31,385,932 km (0.062 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: 180 - 14,282 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit