🌌 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: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.49 AU - 0.75 AU

Year: 175 Days

Day: 13.9 Hours

Environment

Temp: 161 °C

Axial Tilt: 10 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.78 AU - 1 AU

Year: 301 Days

Day: 25.7 Hours

Environment

Temp: 144 °C

Axial Tilt: 33.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.26 AU - 1.82 AU

Year: 684 Days

Day: 31.2 Hours

Environment

Temp: -23 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 112,171,447 km

• M1: 67,169 km (0.058 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.53 AU - 1.95 AU

Year: 822 Days

Day: 43.7 Hours

Environment

Temp: -41 °C

Axial Tilt: 5.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.68

Radius: 1.85

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.81 AU - 2.99 AU

Year: 1332 Days

Day: 35.2 Hours

Environment

Temp: -78 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 5.1 AU - 5.16 AU

Year: 4161 Days

Day: 26.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 12.11 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 19.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 775.7

Radius: 6.7

Gravity: 17.28 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 15.44 AU - 22.72 AU

Year: 29850 Days

Day: 20 Hours

Environment

Temp: -206 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 112,171,447 km

• M1: 84,373 km (0.108 R)
• M2: 337,942 km (0.102 R)
• M3: 749,336 km (0.08 R)
• M4: 1,111,811 km (0.096 R)
• M5: 2,822,164 km (0.093 R)
• M6: 3,349,048 km (0.081 R)
• M7: 4,407,452 km (0.116 R)
• M8: 5,074,659 km (0.088 R)
• M9: 5,762,211 km (0.076 R)
• M10: 7,060,720 km (0.068 R)
• M11: 7,696,362 km (0.06 R)
• M12: 8,720,209 km (0.116 R)
• M13: 9,961,124 km (0.098 R)
• M14: 12,865,417 km (0.049 R)
• M15: 13,412,047 km (0.096 R)
• M16: 15,754,301 km (0.056 R)
• M17: 17,775,967 km (0.104 R)
• M18: 21,664,614 km (0.111 R)
• M19: 22,662,133 km (0.112 R)
• M20: 37,596,189 km (0.063 R)
• M21: 39,849,731 km (0.078 R)
• M22: 53,071,939 km (0.068 R)
• M23: 55,697,382 km (0.068 R)
• M24: 56,729,757 km (0.107 R)
• M25: 57,146,237 km (0.09 R)
• M26: 57,774,847 km (0.113 R)
• M27: 59,903,475 km (0.109 R)
• M28: 61,643,598 km (0.084 R)
• M29: 71,577,196 km (0.057 R)
• M30: 71,820,143 km (0.115 R)
• M31: 77,049,037 km (0.105 R)
• M32: 77,559,764 km (0.118 R)
• M33: 83,328,856 km (0.102 R)
• M34: 102,648,075 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 911.7

Radius: 6

Gravity: 25.33 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 15.12 AU - 24.04 AU

Year: 31031 Days

Day: 16.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 112,171,447 km

• M1: 78,240 km (0.084 R)
• M2: 409,300 km (0.059 R)
• M3: 1,317,658 km (0.112 R)
• M4: 1,911,562 km (0.082 R)
• M5: 3,318,081 km (0.115 R)
• M6: 3,545,021 km (0.095 R)
• M7: 3,852,145 km (0.119 R)
• M8: 5,132,254 km (0.114 R)
• M9: 8,439,115 km (0.045 R)
• M10: 10,289,491 km (0.065 R)
• M11: 11,937,162 km (0.054 R)
• M12: 14,255,480 km (0.093 R)
• M13: 15,120,006 km (0.055 R)
• M14: 19,866,298 km (0.048 R)
• M15: 21,053,507 km (0.088 R)
• M16: 22,980,028 km (0.112 R)
• M17: 25,518,405 km (0.119 R)
• M18: 27,837,920 km (0.091 R)
• M19: 29,598,088 km (0.094 R)
• M20: 34,244,149 km (0.094 R)
• M21: 38,031,668 km (0.071 R)
• M22: 43,861,647 km (0.089 R)
• M23: 46,053,704 km (0.066 R)
• M24: 47,176,586 km (0.101 R)
• M25: 48,702,036 km (0.064 R)
• M26: 50,852,804 km (0.068 R)
• M27: 53,066,105 km (0.109 R)
• M28: 53,475,255 km (0.1 R)
• M29: 53,886,499 km (0.091 R)
• M30: 59,868,320 km (0.067 R)
• M31: 67,229,283 km (0.1 R)
• M32: 72,123,228 km (0.095 R)
• M33: 73,129,722 km (0.087 R)
• M34: 74,656,967 km (0.086 R)
• M35: 79,901,270 km (0.112 R)
• M36: 101,121,877 km (0.092 R)
• M37: 103,016,535 km (0.079 R)
• M38: 108,842,025 km (0.114 R)

Kuiper Belt

Range: 30.6 - 56.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 11,419 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit