🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.42 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.27

Radius: 1.61

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.71 AU - 0.97 AU

Year: 268 Days

Day: 38.6 Hours

Environment

Temp: 177 °C

Axial Tilt: 24.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.13 AU - 1.17 AU

Year: 429 Days

Day: 44.3 Hours

Environment

Temp: 22 °C

Axial Tilt: 0 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 99,667,030 km

• M1: 125,213 km (0.054 R)
• M2: 147,204 km (0.068 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.34 AU - 1.52 AU

Year: 596 Days

Day: 40.5 Hours

Environment

Temp: -9 °C

Axial Tilt: 6.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 99,667,030 km

• M1: 21,991 km (0.118 R)
• M2: 523,293 km (0.069 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.53 AU - 1.99 AU

Year: 813 Days

Day: 35.1 Hours

Environment

Temp: -32 °C

Axial Tilt: 12.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.39 AU - 3.89 AU

Year: 1938 Days

Day: 24.2 Hours

Environment

Temp: -95 °C

Axial Tilt: 24.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 99,667,030 km

• M1: 1,211,294 km (0.066 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.56 AU - 4.04 AU

Year: 2088 Days

Day: 36.6 Hours

Environment

Temp: -100 °C

Axial Tilt: 88.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.36

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 3.28 AU - 4.22 AU

Year: 2529 Days

Day: 28.2 Hours

Environment

Temp: -112 °C

Axial Tilt: 14.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.7

Radius: 11.9

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 5.36 AU - 6.04 AU

Year: 4739 Days

Day: 14 Hours

Environment

Temp: -136 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 99,667,030 km

• M1: 148,401 km (0.119 R)
• M2: 606,021 km (0.091 R)
• M3: 1,076,207 km (0.112 R)
• M4: 1,635,404 km (0.089 R)
• M5: 2,586,846 km (0.07 R)
• M6: 3,504,629 km (0.074 R)
• M7: 4,252,020 km (0.062 R)
• M8: 4,799,100 km (0.12 R)
• M9: 5,446,559 km (0.061 R)
• M10: 6,696,150 km (0.051 R)
• M11: 7,272,551 km (0.118 R)
• M12: 7,916,869 km (0.041 R)
• M13: 10,162,483 km (0.116 R)
• M14: 11,454,111 km (0.083 R)
• M15: 13,896,745 km (0.095 R)
• M16: 15,050,593 km (0.053 R)
• M17: 16,267,272 km (0.11 R)
• M18: 20,977,212 km (0.109 R)
• M19: 21,657,733 km (0.12 R)
• M20: 22,635,355 km (0.11 R)
• M21: 24,156,615 km (0.057 R)
• M22: 25,207,840 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 12.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.7

Radius: 11.1

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 11.85 AU - 13.69 AU

Year: 15892 Days

Day: 6.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 99,667,030 km

• M1: 151,692 km (0.03 R)
• M2: 640,428 km (0.091 R)
• M3: 1,304,344 km (0.026 R)
• M4: 2,830,691 km (0.119 R)
• M5: 3,257,494 km (0.078 R)
• M6: 4,834,106 km (0.088 R)
• M7: 5,860,796 km (0.073 R)
• M8: 6,635,114 km (0.092 R)
• M9: 9,764,851 km (0.075 R)
• M10: 10,273,185 km (0.084 R)
• M11: 10,960,438 km (0.117 R)
• M12: 13,765,996 km (0.111 R)
• M13: 15,266,911 km (0.096 R)
• M14: 15,882,956 km (0.067 R)
• M15: 16,729,979 km (0.097 R)
• M16: 20,340,074 km (0.095 R)
• M17: 23,075,771 km (0.09 R)
• M18: 25,567,622 km (0.107 R)
• M19: 27,827,448 km (0.076 R)
• M20: 31,188,762 km (0.106 R)
• M21: 34,460,618 km (0.048 R)

Planet 10 - Ice Giant

Semi-Major Axis: 20.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 586.8

Radius: 3.2

Gravity: 57.3 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 20.45 AU - 20.61 AU

Year: 32395 Days

Day: 24.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 99,667,030 km

• M1: 40,391 km (0.101 R)
• M2: 145,559 km (0.077 R)
• M3: 529,277 km (0.086 R)
• M4: 813,214 km (0.074 R)
• M5: 1,115,103 km (0.074 R)
• M6: 1,267,842 km (0.119 R)
• M7: 1,596,508 km (0.096 R)
• M8: 2,250,401 km (0.07 R)
• M9: 3,065,560 km (0.096 R)
• M10: 3,183,443 km (0.062 R)
• M11: 3,921,110 km (0.083 R)
• M12: 5,251,633 km (0.073 R)
• M13: 5,463,464 km (0.09 R)
• M14: 5,814,271 km (0.102 R)
• M15: 5,995,135 km (0.09 R)
• M16: 6,226,563 km (0.104 R)
• M17: 6,368,232 km (0.117 R)
• M18: 6,906,186 km (0.102 R)
• M19: 7,960,851 km (0.068 R)
• M20: 8,411,290 km (0.048 R)
• M21: 8,760,003 km (0.066 R)
• M22: 13,333,359 km (0.098 R)
• M23: 14,621,546 km (0.094 R)
• M24: 15,381,503 km (0.07 R)
• M25: 20,501,191 km (0.046 R)
• M26: 21,025,831 km (0.115 R)
• M27: 21,238,111 km (0.093 R)
• M28: 23,554,783 km (0.042 R)
• M29: 26,402,079 km (0.04 R)
• M30: 26,525,498 km (0.068 R)
• M31: 29,603,324 km (0.107 R)
• M32: 40,411,172 km (0.102 R)
• M33: 44,467,967 km (0.099 R)
• M34: 50,667,303 km (0.076 R)
• M35: 54,570,162 km (0.067 R)
• M36: 58,249,671 km (0.11 R)
• M37: 62,528,170 km (0.112 R)
• M38: 70,986,583 km (0.069 R)
• M39: 73,396,755 km (0.051 R)
• M40: 76,110,310 km (0.112 R)
• M41: 90,685,930 km (0.052 R)
• M42: 91,248,418 km (0.107 R)
• M43: 91,813,150 km (0.112 R)
• M44: 94,383,391 km (0.079 R)

Kuiper Belt

Range: 31.5 - 52.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 362 - 10,953 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit