🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.53 AU - 0.67 AU

Year: 173 Days

Day: 46.3 Hours

Environment

Temp: 199 °C

Axial Tilt: 38.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.57 AU - 0.65 AU

Year: 178 Days

Day: 18.4 Hours

Environment

Temp: 148 °C

Axial Tilt: 39.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 90,459,952 km

• M1: 372,648 km (0.067 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.71 AU - 0.93 AU

Year: 277 Days

Day: 17.7 Hours

Environment

Temp: 118 °C

Axial Tilt: 24.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1 AU - 1.12 AU

Year: 407 Days

Day: 34.7 Hours

Environment

Temp: 24 °C

Axial Tilt: 33.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.93

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.17 AU - 1.49 AU

Year: 572 Days

Day: 29.1 Hours

Environment

Temp: -24 °C

Axial Tilt: 17.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.33 AU - 2.13 AU

Year: 848 Days

Day: 47.2 Hours

Environment

Temp: -59 °C

Axial Tilt: 7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 2.43 AU - 2.61 AU

Year: 1491 Days

Day: 24.9 Hours

Environment

Temp: -97 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.7

Radius: 12.8

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 7.61 AU - 8.83 AU

Year: 8785 Days

Day: 11.3 Hours

Environment

Temp: -160 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 90,459,952 km

• M1: 159,322 km (0.095 R)
• M2: 588,967 km (0.091 R)
• M3: 1,196,334 km (0.083 R)
• M4: 2,368,882 km (0.084 R)
• M5: 3,285,020 km (0.075 R)
• M6: 4,598,938 km (0.109 R)
• M7: 5,709,552 km (0.084 R)
• M8: 8,412,487 km (0.085 R)
• M9: 9,144,319 km (0.03 R)
• M10: 10,840,460 km (0.053 R)
• M11: 11,322,764 km (0.101 R)
• M12: 12,445,795 km (0.087 R)
• M13: 15,442,839 km (0.098 R)
• M14: 17,543,342 km (0.12 R)
• M15: 19,277,930 km (0.119 R)
• M16: 22,218,725 km (0.116 R)
• M17: 24,980,600 km (0.093 R)
• M18: 26,685,268 km (0.08 R)
• M19: 33,828,118 km (0.106 R)
• M20: 36,268,059 km (0.027 R)
• M21: 38,823,191 km (0.102 R)
• M22: 40,463,681 km (0.11 R)
• M23: 44,425,481 km (0.12 R)
• M24: 45,109,892 km (0.109 R)
• M25: 45,801,482 km (0.072 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 585.5

Radius: 3.5

Gravity: 47.8 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 14.43 AU - 21.21 AU

Year: 28042 Days

Day: 18.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 90,459,952 km

• M1: 43,533 km (0.096 R)
• M2: 307,872 km (0.099 R)
• M3: 544,835 km (0.113 R)
• M4: 1,456,335 km (0.085 R)
• M5: 2,203,427 km (0.048 R)
• M6: 3,034,144 km (0.04 R)
• M7: 4,192,032 km (0.114 R)
• M8: 5,243,555 km (0.075 R)
• M9: 8,448,540 km (0.102 R)
• M10: 10,168,317 km (0.07 R)
• M11: 10,422,484 km (0.085 R)
• M12: 12,250,270 km (0.1 R)
• M13: 12,756,809 km (0.111 R)
• M14: 14,123,236 km (0.079 R)
• M15: 14,280,912 km (0.072 R)
• M16: 17,959,972 km (0.093 R)
• M17: 18,993,394 km (0.109 R)
• M18: 19,966,678 km (0.101 R)
• M19: 21,281,045 km (0.078 R)
• M20: 23,304,057 km (0.036 R)
• M21: 26,633,208 km (0.059 R)
• M22: 29,617,237 km (0.12 R)
• M23: 30,005,144 km (0.102 R)
• M24: 34,073,309 km (0.05 R)
• M25: 41,482,592 km (0.108 R)
• M26: 41,968,187 km (0.118 R)
• M27: 43,447,859 km (0.066 R)
• M28: 47,210,096 km (0.059 R)
• M29: 51,929,610 km (0.115 R)
• M30: 53,061,617 km (0.117 R)
• M31: 65,082,105 km (0.098 R)
• M32: 66,397,519 km (0.088 R)
• M33: 69,763,172 km (0.073 R)
• M34: 70,449,676 km (0.104 R)
• M35: 71,372,097 km (0.063 R)
• M36: 73,005,406 km (0.105 R)
• M37: 76,346,675 km (0.116 R)
• M38: 80,038,152 km (0.117 R)
• M39: 82,819,625 km (0.092 R)
• M40: 85,926,623 km (0.1 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 507 - 10,858 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit