🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.56 AU - 0.58 AU

Year: 153 Days

Day: 35.9 Hours

Environment

Temp: 235 °C

Axial Tilt: 32.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 55,718,209 km

• M1: 70,760 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.67 AU - 0.75 AU

Year: 213 Days

Day: 31.7 Hours

Environment

Temp: 135 °C

Axial Tilt: 18.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 55,718,209 km

• M1: 182,360 km (0.079 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.97 AU - 1.27 AU

Year: 422 Days

Day: 41.9 Hours

Environment

Temp: 41 °C

Axial Tilt: 1.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.09 AU - 1.33 AU

Year: 474 Days

Day: 23 Hours

Environment

Temp: 4 °C

Axial Tilt: 42.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 55,718,209 km

• M1: 118,631 km (0.111 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.45 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.71

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.12 AU - 1.78 AU

Year: 622 Days

Day: 46.4 Hours

Environment

Temp: -12 °C

Axial Tilt: 0.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 55,718,209 km

• M1: 203,603 km (0.056 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 2.02 AU - 2.54 AU

Year: 1227 Days

Day: 13.6 Hours

Environment

Temp: -78 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 7.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 392.7

Radius: 14.8

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 6.46 AU - 7.92 AU

Year: 6872 Days

Day: 9.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 55,718,209 km

• M1: 185,202 km (0.093 R)
• M2: 1,007,990 km (0.079 R)
• M3: 1,483,113 km (0.075 R)
• M4: 1,970,653 km (0.093 R)
• M5: 3,593,042 km (0.106 R)
• M6: 4,877,788 km (0.119 R)
• M7: 5,396,893 km (0.114 R)
• M8: 6,167,322 km (0.117 R)
• M9: 6,709,913 km (0.085 R)
• M10: 8,455,421 km (0.095 R)
• M11: 10,666,478 km (0.114 R)
• M12: 11,498,541 km (0.099 R)
• M13: 13,240,309 km (0.074 R)
• M14: 15,266,612 km (0.117 R)
• M15: 15,730,665 km (0.113 R)
• M16: 20,552,204 km (0.098 R)
• M17: 24,030,654 km (0.059 R)
• M18: 24,580,277 km (0.054 R)
• M19: 25,218,760 km (0.108 R)
• M20: 27,540,968 km (0.071 R)
• M21: 29,373,841 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.1

Radius: 10.1

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 9.06 AU - 11.04 AU

Year: 11357 Days

Day: 12.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 55,718,209 km

• M1: 125,812 km (0.11 R)
• M2: 617,091 km (0.096 R)
• M3: 1,258,268 km (0.114 R)
• M4: 2,487,663 km (0.1 R)
• M5: 3,474,859 km (0.034 R)
• M6: 8,038,492 km (0.115 R)
• M7: 10,071,677 km (0.055 R)
• M8: 12,010,465 km (0.079 R)
• M9: 16,804,927 km (0.117 R)
• M10: 18,743,117 km (0.093 R)
• M11: 19,444,731 km (0.099 R)
• M12: 21,426,454 km (0.078 R)
• M13: 28,084,607 km (0.067 R)
• M14: 28,817,935 km (0.068 R)
• M15: 29,376,235 km (0.107 R)
• M16: 30,227,147 km (0.103 R)
• M17: 32,476,501 km (0.03 R)
• M18: 34,730,492 km (0.068 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 205.2

Radius: 4.2

Gravity: 11.63 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 15.21 AU - 16.87 AU

Year: 22898 Days

Day: 23.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 55,718,209 km

• M1: 99,931 km (0.06 R)
• M2: 288,873 km (0.109 R)
• M3: 997,070 km (0.03 R)
• M4: 1,792,182 km (0.115 R)
• M5: 2,438,894 km (0.073 R)
• M6: 2,736,893 km (0.075 R)
• M7: 6,363,594 km (0.111 R)
• M8: 6,968,867 km (0.111 R)
• M9: 11,253,949 km (0.106 R)
• M10: 15,198,844 km (0.091 R)
• M11: 18,658,894 km (0.04 R)
• M12: 22,609,474 km (0.118 R)
• M13: 23,442,435 km (0.032 R)
• M14: 23,914,117 km (0.054 R)
• M15: 26,774,578 km (0.108 R)
• M16: 29,307,868 km (0.073 R)
• M17: 31,881,251 km (0.113 R)
• M18: 32,810,553 km (0.084 R)
• M19: 45,407,741 km (0.106 R)
• M20: 45,553,599 km (0.075 R)
• M21: 53,088,694 km (0.059 R)

Kuiper Belt

Range: 30.8 - 57.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 177 - 14,096 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit