🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.41 AU - 0.65 AU

Year: 166 Days

Day: 14.8 Hours

Environment

Temp: 138 °C

Axial Tilt: 9.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.49 AU - 0.71 AU

Year: 200 Days

Day: 14.2 Hours

Environment

Temp: 16 °C

Axial Tilt: 18.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.6 AU - 0.76 AU

Year: 241 Days

Day: 44.6 Hours

Environment

Temp: -6 °C

Axial Tilt: 15.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.81 AU - 0.89 AU

Year: 337 Days

Day: 22.4 Hours

Environment

Temp: -36 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.99 AU - 1.31 AU

Year: 531 Days

Day: 26 Hours

Environment

Temp: -70 °C

Axial Tilt: 32.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.7 AU - 2.52 AU

Year: 1319 Days

Day: 21 Hours

Environment

Temp: -126 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.6

Radius: 9.3

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 5.05 AU - 5.23 AU

Year: 5016 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,515,031 km

• M1: 115,789 km (0.05 R)
• M2: 424,110 km (0.079 R)
• M3: 1,759,570 km (0.09 R)
• M4: 2,920,898 km (0.104 R)
• M5: 4,228,085 km (0.105 R)
• M6: 4,626,464 km (0.07 R)
• M7: 4,947,950 km (0.073 R)
• M8: 5,417,836 km (0.062 R)
• M9: 5,719,426 km (0.104 R)
• M10: 6,386,632 km (0.113 R)
• M11: 7,635,326 km (0.114 R)
• M12: 10,066,890 km (0.118 R)
• M13: 11,525,170 km (0.112 R)
• M14: 13,021,747 km (0.109 R)
• M15: 16,226,283 km (0.098 R)
• M16: 20,709,581 km (0.1 R)
• M17: 22,840,752 km (0.113 R)
• M18: 24,662,705 km (0.111 R)
• M19: 25,189,738 km (0.03 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620

Radius: 9.5

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 5.46 AU - 7.48 AU

Year: 7084 Days

Day: 12.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 52,515,031 km

• M1: 118,332 km (0.102 R)
• M2: 778,657 km (0.089 R)
• M3: 1,321,697 km (0.085 R)
• M4: 1,993,691 km (0.092 R)
• M5: 2,977,596 km (0.101 R)
• M6: 3,931,282 km (0.065 R)
• M7: 4,230,927 km (0.102 R)
• M8: 4,792,218 km (0.087 R)
• M9: 5,193,440 km (0.053 R)
• M10: 5,869,323 km (0.097 R)
• M11: 6,533,537 km (0.083 R)
• M12: 9,258,163 km (0.054 R)
• M13: 9,927,763 km (0.035 R)
• M14: 11,214,006 km (0.104 R)
• M15: 11,666,540 km (0.11 R)
• M16: 12,236,059 km (0.11 R)
• M17: 14,582,651 km (0.05 R)
• M18: 15,182,837 km (0.12 R)
• M19: 17,280,499 km (0.104 R)
• M20: 17,884,575 km (0.118 R)
• M21: 19,206,123 km (0.082 R)
• M22: 21,194,578 km (0.104 R)
• M23: 22,356,504 km (0.092 R)
• M24: 22,753,238 km (0.116 R)
• M25: 24,220,045 km (0.114 R)
• M26: 25,146,953 km (0.097 R)
• M27: 25,835,851 km (0.067 R)
• M28: 26,184,863 km (0.117 R)
• M29: 35,754,938 km (0.098 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.5

Radius: 13.3

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 8.43 AU - 9.91 AU

Year: 11953 Days

Day: 14 Hours

Environment

Temp: -185 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 52,515,031 km

• M1: 165,605 km (0.084 R)
• M2: 603,328 km (0.119 R)
• M3: 1,096,104 km (0.108 R)
• M4: 2,507,410 km (0.118 R)
• M5: 3,591,695 km (0.059 R)
• M6: 5,194,786 km (0.088 R)
• M7: 6,249,152 km (0.114 R)
• M8: 7,028,258 km (0.109 R)
• M9: 8,226,686 km (0.044 R)
• M10: 8,780,348 km (0.078 R)
• M11: 9,211,938 km (0.12 R)
• M12: 10,274,083 km (0.091 R)
• M13: 11,192,613 km (0.117 R)
• M14: 11,643,352 km (0.119 R)
• M15: 13,443,164 km (0.032 R)
• M16: 17,588,072 km (0.047 R)
• M17: 21,036,602 km (0.052 R)
• M18: 21,551,219 km (0.116 R)
• M19: 23,145,633 km (0.119 R)
• M20: 26,271,032 km (0.086 R)
• M21: 27,780,624 km (0.113 R)
• M22: 29,029,317 km (0.074 R)
• M23: 31,750,652 km (0.119 R)
• M24: 35,597,561 km (0.093 R)
• M25: 40,531,897 km (0.073 R)
• M26: 45,190,525 km (0.087 R)
• M27: 51,268,686 km (0.102 R)
• M28: 52,201,579 km (0.106 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: 520 - 10,890 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit