🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.56 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.67

Radius: 1.23

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.04 AU - 1.18 AU

Year: 413 Days

Day: 15.7 Hours

Environment

Temp: 40 °C

Axial Tilt: 15 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 58,042,218 km

• M1: 325,675 km (0.103 R)
• M2: 375,491 km (0.097 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.95 AU - 1.29 AU

Year: 419 Days

Day: 43.9 Hours

Environment

Temp: 31 °C

Axial Tilt: 31 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.35 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.27 AU - 1.43 AU

Year: 554 Days

Day: 41 Hours

Environment

Temp: 8 °C

Axial Tilt: 3.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.65 AU - 2.01 AU

Year: 874 Days

Day: 21.7 Hours

Environment

Temp: -47 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 2.51 AU - 2.57 AU

Year: 1429 Days

Day: 16.4 Hours

Environment

Temp: -83 °C

Axial Tilt: 23.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 2.23 AU - 3.25 AU

Year: 1601 Days

Day: 35.8 Hours

Environment

Temp: -84 °C

Axial Tilt: 41.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,042,218 km

• M1: 155,582 km (0.071 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 3.34 AU - 3.6 AU

Year: 2282 Days

Day: 16.3 Hours

Environment

Temp: -110 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.15 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.9

Radius: 14.1

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 5.53 AU - 8.13 AU

Year: 6303 Days

Day: 10.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,042,218 km

• M1: 175,478 km (0.063 R)
• M2: 625,170 km (0.116 R)
• M3: 1,225,655 km (0.103 R)
• M4: 2,376,063 km (0.05 R)
• M5: 4,394,437 km (0.104 R)
• M6: 5,271,979 km (0.09 R)
• M7: 6,110,325 km (0.106 R)
• M8: 6,902,745 km (0.108 R)
• M9: 8,770,624 km (0.082 R)
• M10: 10,731,254 km (0.089 R)
• M11: 11,368,092 km (0.074 R)
• M12: 12,969,387 km (0.06 R)
• M13: 18,738,928 km (0.093 R)
• M14: 19,329,990 km (0.086 R)
• M15: 22,991,846 km (0.078 R)
• M16: 25,462,006 km (0.07 R)
• M17: 27,679,944 km (0.054 R)
• M18: 29,315,947 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 425.1

Radius: 4.8

Gravity: 18.45 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 12.07 AU - 14.31 AU

Year: 16915 Days

Day: 21.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 58,042,218 km

• M1: 59,839 km (0.114 R)
• M2: 225,743 km (0.066 R)
• M3: 954,883 km (0.101 R)
• M4: 1,175,839 km (0.113 R)
• M5: 1,346,231 km (0.076 R)
• M6: 1,941,930 km (0.112 R)
• M7: 2,143,438 km (0.032 R)
• M8: 2,318,617 km (0.042 R)
• M9: 2,833,084 km (0.059 R)
• M10: 3,092,936 km (0.071 R)
• M11: 4,144,310 km (0.114 R)
• M12: 4,448,143 km (0.085 R)
• M13: 4,998,813 km (0.045 R)
• M14: 5,343,337 km (0.084 R)
• M15: 5,521,508 km (0.101 R)
• M16: 5,777,470 km (0.092 R)
• M17: 6,079,657 km (0.062 R)
• M18: 7,220,940 km (0.051 R)
• M19: 8,212,474 km (0.065 R)
• M20: 9,653,999 km (0.106 R)
• M21: 12,028,716 km (0.117 R)
• M22: 15,546,211 km (0.03 R)
• M23: 16,353,441 km (0.072 R)
• M24: 16,578,286 km (0.099 R)
• M25: 20,118,670 km (0.112 R)
• M26: 25,212,328 km (0.104 R)
• M27: 26,120,237 km (0.09 R)
• M28: 26,530,584 km (0.088 R)
• M29: 30,760,015 km (0.063 R)
• M30: 35,920,094 km (0.077 R)
• M31: 38,637,689 km (0.084 R)
• M32: 46,548,125 km (0.058 R)
• M33: 47,606,830 km (0.056 R)
• M34: 48,218,984 km (0.116 R)
• M35: 48,681,690 km (0.086 R)
• M36: 51,358,894 km (0.106 R)
• M37: 53,801,378 km (0.08 R)

Kuiper Belt

Range: 31.1 - 47.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 16,727 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit