🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.48 AU - 0.74 AU

Year: 167 Days

Day: 47.8 Hours

Environment

Temp: 161 °C

Axial Tilt: 19.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.87

Radius: 0.95

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.7 AU - 0.92 AU

Year: 256 Days

Day: 34.4 Hours

Environment

Temp: 133 °C

Axial Tilt: 2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 43,625,299 km

• M1: 105,466 km (0.118 R)
• M2: 316,549 km (0.062 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1 AU - 1.3 AU

Year: 433 Days

Day: 13.1 Hours

Environment

Temp: 35 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 4.39 AU - 4.53 AU

Year: 3310 Days

Day: 43.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 16.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 3.96 AU - 5.5 AU

Year: 3616 Days

Day: 45.3 Hours

Environment

Temp: -116 °C

Axial Tilt: 14 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 685.7

Radius: 13.4

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 7.81 AU - 9.71 AU

Year: 9112 Days

Day: 12.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 43,625,299 km

• M1: 166,652 km (0.071 R)
• M2: 1,021,305 km (0.103 R)
• M3: 1,491,341 km (0.063 R)
• M4: 2,125,038 km (0.071 R)
• M5: 2,830,093 km (0.067 R)
• M6: 5,813,074 km (0.12 R)
• M7: 6,927,429 km (0.113 R)
• M8: 8,094,442 km (0.079 R)
• M9: 8,614,145 km (0.112 R)
• M10: 13,075,751 km (0.03 R)
• M11: 13,731,888 km (0.104 R)
• M12: 14,285,101 km (0.106 R)
• M13: 14,789,395 km (0.079 R)
• M14: 16,648,298 km (0.096 R)
• M15: 18,141,435 km (0.077 R)
• M16: 25,196,620 km (0.096 R)
• M17: 26,120,237 km (0.082 R)
• M18: 26,779,964 km (0.078 R)
• M19: 27,547,700 km (0.098 R)
• M20: 28,527,865 km (0.082 R)
• M21: 29,836,547 km (0.026 R)
• M22: 32,573,740 km (0.09 R)
• M23: 35,245,109 km (0.112 R)
• M24: 36,051,142 km (0.088 R)
• M25: 39,398,245 km (0.081 R)
• M26: 40,516,639 km (0.035 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 959.5

Radius: 4.8

Gravity: 41.64 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 12.91 AU - 13.79 AU

Year: 17144 Days

Day: 16.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 43,625,299 km

• M1: 59,839 km (0.054 R)
• M2: 216,917 km (0.082 R)
• M3: 711,338 km (0.119 R)
• M4: 910,901 km (0.042 R)
• M5: 1,855,462 km (0.107 R)
• M6: 2,971,463 km (0.103 R)
• M7: 3,322,718 km (0.087 R)
• M8: 3,494,008 km (0.1 R)
• M9: 4,899,181 km (0.12 R)
• M10: 6,733,251 km (0.052 R)
• M11: 6,915,610 km (0.119 R)
• M12: 7,777,743 km (0.058 R)
• M13: 10,302,357 km (0.114 R)
• M14: 10,729,010 km (0.084 R)
• M15: 11,294,789 km (0.106 R)
• M16: 13,904,673 km (0.113 R)
• M17: 16,475,064 km (0.073 R)
• M18: 16,723,396 km (0.118 R)
• M19: 17,828,326 km (0.065 R)
• M20: 21,928,505 km (0.113 R)
• M21: 26,164,069 km (0.111 R)
• M22: 29,921,519 km (0.078 R)
• M23: 30,663,824 km (0.097 R)
• M24: 32,573,440 km (0.11 R)
• M25: 36,768,314 km (0.077 R)
• M26: 37,762,991 km (0.048 R)
• M27: 39,805,749 km (0.085 R)
• M28: 41,767,576 km (0.103 R)
• M29: 45,557,040 km (0.068 R)
• M30: 55,647,117 km (0.098 R)
• M31: 57,335,329 km (0.061 R)
• M32: 60,028,689 km (0.086 R)
• M33: 61,803,967 km (0.079 R)
• M34: 65,666,135 km (0.093 R)
• M35: 72,750,941 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 20.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 49.1

Radius: 7.9

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 19.85 AU - 20.99 AU

Year: 32431 Days

Day: 15.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,625,299 km

• M1: 143,165 km (0.094 R)
• M2: 1,181,973 km (0.112 R)
• M3: 3,076,331 km (0.058 R)
• M4: 6,113,167 km (0.1 R)
• M5: 6,763,619 km (0.109 R)
• M6: 7,783,278 km (0.071 R)
• M7: 11,508,564 km (0.088 R)
• M8: 12,162,606 km (0.084 R)
• M9: 22,635,803 km (0.074 R)
• M10: 23,488,212 km (0.11 R)
• M11: 32,254,498 km (0.083 R)

Kuiper Belt

Range: 31.2 - 49.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 398 - 16,221 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit