🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.55 AU - 0.57 AU

Year: 154 Days

Day: 18 Hours

Environment

Temp: 232 °C

Axial Tilt: 8.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.97 AU - 1.55 AU

Year: 519 Days

Day: 26.1 Hours

Environment

Temp: -10 °C

Axial Tilt: 29.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.36 AU - 1.42 AU

Year: 602 Days

Day: 13.1 Hours

Environment

Temp: -26 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.88 AU - 2.74 AU

Year: 1289 Days

Day: 27.3 Hours

Environment

Temp: -76 °C

Axial Tilt: 49.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.38

Radius: 1.41

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 3.19 AU - 3.21 AU

Year: 2101 Days

Day: 37.2 Hours

Environment

Temp: -111 °C

Axial Tilt: 28.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,688,091 km

• M1: 156,031 km (0.093 R)

Asteroid Belt

Center: 10.16 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 17.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 903.3

Radius: 3.8

Gravity: 62.56 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 14.9 AU - 19.32 AU

Year: 25981 Days

Day: 16.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 79,688,091 km

• M1: 47,273 km (0.106 R)
• M2: 818,001 km (0.114 R)
• M3: 1,047,933 km (0.052 R)
• M4: 1,385,875 km (0.083 R)
• M5: 1,874,162 km (0.073 R)
• M6: 2,134,762 km (0.101 R)
• M7: 2,321,609 km (0.072 R)
• M8: 2,648,481 km (0.052 R)
• M9: 3,331,395 km (0.108 R)
• M10: 4,019,096 km (0.073 R)
• M11: 4,267,878 km (0.04 R)
• M12: 5,035,913 km (0.116 R)
• M13: 6,120,198 km (0.035 R)
• M14: 7,351,090 km (0.081 R)
• M15: 7,777,444 km (0.073 R)
• M16: 7,996,754 km (0.111 R)
• M17: 8,333,349 km (0.112 R)
• M18: 9,095,102 km (0.105 R)
• M19: 10,421,736 km (0.082 R)
• M20: 11,944,492 km (0.09 R)
• M21: 17,671,697 km (0.073 R)
• M22: 23,030,443 km (0.059 R)
• M23: 23,368,983 km (0.116 R)
• M24: 25,111,648 km (0.085 R)
• M25: 25,590,511 km (0.074 R)
• M26: 25,711,236 km (0.108 R)
• M27: 27,189,114 km (0.072 R)
• M28: 28,463,239 km (0.064 R)
• M29: 30,992,640 km (0.077 R)
• M30: 50,125,011 km (0.107 R)
• M31: 50,883,771 km (0.043 R)
• M32: 64,309,282 km (0.087 R)
• M33: 65,204,925 km (0.093 R)
• M34: 69,338,164 km (0.058 R)
• M35: 75,116,232 km (0.032 R)
• M36: 80,428,303 km (0.047 R)
• M37: 93,784,551 km (0.063 R)
• M38: 95,805,618 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 55.1

Radius: 4.7

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 13.62 AU - 22.42 AU

Year: 28080 Days

Day: 22.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 79,688,091 km

• M1: 65,225 km (0.119 R)
• M2: 257,009 km (0.114 R)
• M3: 539,450 km (0.116 R)
• M4: 1,030,580 km (0.066 R)
• M5: 1,470,248 km (0.098 R)
• M6: 5,354,856 km (0.113 R)
• M7: 14,591,776 km (0.111 R)
• M8: 36,671,225 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 369.5

Radius: 3.1

Gravity: 38.45 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 17.64 AU - 19.34 AU

Year: 29186 Days

Day: 24.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 79,688,091 km

• M1: 38,596 km (0.093 R)
• M2: 183,257 km (0.04 R)
• M3: 296,802 km (0.085 R)
• M4: 744,997 km (0.089 R)
• M5: 1,253,481 km (0.109 R)
• M6: 1,606,232 km (0.106 R)
• M7: 2,343,151 km (0.072 R)
• M8: 2,953,212 km (0.039 R)
• M9: 4,073,101 km (0.106 R)
• M10: 4,478,511 km (0.049 R)
• M11: 5,772,683 km (0.055 R)
• M12: 6,504,665 km (0.092 R)
• M13: 8,413,983 km (0.11 R)
• M14: 8,792,166 km (0.03 R)
• M15: 13,951,497 km (0.042 R)
• M16: 53,032,445 km (0.119 R)
• M17: 53,948,283 km (0.1 R)
• M18: 58,103,065 km (0.094 R)
• M19: 70,948,735 km (0.05 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 425 - 16,104 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit