🌌 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 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.62 AU - 0.68 AU

Year: 344 Days

Day: 44.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.6

Radius: 9.1

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.57 AU - 0.91 AU

Year: 418 Days

Day: 9.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 175 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,571,473 km

• M1: 113,246 km (0.057 R)
• M2: 507,586 km (0.036 R)
• M3: 828,473 km (0.112 R)
• M4: 1,128,866 km (0.1 R)
• M5: 1,463,666 km (0.038 R)
• M6: 1,750,744 km (0.108 R)
• M7: 2,178,444 km (0.104 R)
• M8: 2,797,331 km (0.113 R)
• M9: 3,153,972 km (0.097 R)
• M10: 3,540,982 km (0.053 R)
• M11: 3,894,033 km (0.108 R)
• M12: 4,242,745 km (0.062 R)
• M13: 4,835,302 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.2

Radius: 12.7

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.74 AU - 0.96 AU

Year: 514 Days

Day: 15 Hours

Environment

Temp: -156 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,571,473 km

• M1: 159,023 km (0.057 R)
• M2: 576,849 km (0.078 R)
• M3: 1,098,348 km (0.085 R)
• M4: 1,646,175 km (0.027 R)
• M5: 2,238,882 km (0.09 R)
• M6: 2,714,304 km (0.111 R)
• M7: 3,458,254 km (0.069 R)
• M8: 3,969,879 km (0.032 R)
• M9: 4,409,397 km (0.09 R)
• M10: 5,012,875 km (0.047 R)
• M11: 5,492,187 km (0.074 R)
• M12: 6,192,005 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.9

Radius: 8.4

Gravity: 9.81 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.96 AU - 1 AU

Year: 636 Days

Day: 9.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 66,571,473 km

• M1: 104,419 km (0.095 R)
• M2: 396,434 km (0.094 R)
• M3: 709,842 km (0.077 R)
• M4: 1,167,761 km (0.042 R)
• M5: 1,932,954 km (0.066 R)
• M6: 2,621,104 km (0.094 R)
• M7: 3,010,059 km (0.089 R)
• M8: 4,981,609 km (0.106 R)
• M9: 5,580,300 km (0.103 R)
• M10: 6,325,297 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.1

Radius: 14.2

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.82 AU - 1.2 AU

Year: 666 Days

Day: 12.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 66,571,473 km

• M1: 176,675 km (0.103 R)
• M2: 853,456 km (0.025 R)
• M3: 1,393,055 km (0.065 R)
• M4: 2,487,513 km (0.027 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.6

Radius: 11.8

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.02 AU - 1.1 AU

Year: 716 Days

Day: 10.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,571,473 km

• M1: 146,905 km (0.091 R)
• M2: 541,245 km (0.076 R)
• M3: 973,583 km (0.088 R)
• M4: 1,405,921 km (0.063 R)
• M5: 1,924,726 km (0.036 R)
• M6: 2,517,283 km (0.114 R)
• M7: 2,966,077 km (0.111 R)
• M8: 3,391,384 km (0.11 R)
• M9: 4,157,325 km (0.064 R)
• M10: 4,597,591 km (0.072 R)
• M11: 5,035,315 km (0.11 R)
• M12: 5,995,135 km (0.119 R)
• M13: 6,538,773 km (0.08 R)

Asteroid Belt

Center: 5.5 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 9.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.5

Radius: 5.1

Gravity: 16.74 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 8.64 AU - 11.22 AU

Year: 20527 Days

Day: 24.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,571,473 km

• M1: 63,429 km (0.102 R)
• M2: 227,090 km (0.108 R)
• M3: 959,970 km (0.068 R)
• M4: 1,570,778 km (0.031 R)
• M5: 1,841,251 km (0.047 R)
• M6: 4,256,359 km (0.114 R)
• M7: 8,730,981 km (0.095 R)
• M8: 13,584,384 km (0.094 R)
• M9: 15,085,300 km (0.086 R)
• M10: 23,968,122 km (0.092 R)
• M11: 24,681,106 km (0.064 R)
• M12: 32,730,069 km (0.116 R)
• M13: 37,408,743 km (0.092 R)
• M14: 41,341,671 km (0.058 R)
• M15: 58,538,544 km (0.088 R)
• M16: 59,273,968 km (0.117 R)
• M17: 63,817,105 km (0.103 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 322 - 16,431 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit