🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.69 AU - 1.01 AU

Year: 278 Days

Day: 41.2 Hours

Environment

Temp: 132 °C

Axial Tilt: 7.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.71 AU - 1.11 AU

Year: 308 Days

Day: 19.3 Hours

Environment

Temp: 166 °C

Axial Tilt: 19 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 53,074,361 km

• M1: 691,890 km (0.097 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.11 AU - 1.35 AU

Year: 484 Days

Day: 30.6 Hours

Environment

Temp: 26 °C

Axial Tilt: 12.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 53,074,361 km

• M1: 176,675 km (0.119 R)
• M2: 414,835 km (0.1 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.79 AU - 2.17 AU

Year: 988 Days

Day: 24.6 Hours

Environment

Temp: -55 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,074,361 km

• M1: 1,194,988 km (0.1 R)

Planet 5 - Terrestrial

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 3.49 AU - 4.65 AU

Year: 2913 Days

Day: 29.3 Hours

Environment

Temp: -110 °C

Axial Tilt: 71.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 4.2 AU - 4.48 AU

Year: 3208 Days

Day: 31.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 23.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.5 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 6.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842

Radius: 9.6

Gravity: 9.14 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 5.21 AU - 8.09 AU

Year: 6084 Days

Day: 13.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 53,074,361 km

• M1: 127,308 km (0.118 R)
• M2: 590,164 km (0.032 R)
• M3: 1,006,345 km (0.101 R)
• M4: 1,513,332 km (0.091 R)
• M5: 1,819,559 km (0.1 R)
• M6: 2,183,830 km (0.103 R)
• M7: 2,764,718 km (0.079 R)
• M8: 4,183,205 km (0.084 R)
• M9: 4,549,271 km (0.088 R)
• M10: 4,936,730 km (0.119 R)
• M11: 5,777,919 km (0.12 R)
• M12: 7,141,653 km (0.104 R)
• M13: 8,136,179 km (0.114 R)
• M14: 9,090,614 km (0.118 R)
• M15: 9,572,618 km (0.063 R)
• M16: 13,105,222 km (0.102 R)
• M17: 14,591,178 km (0.054 R)
• M18: 15,070,190 km (0.087 R)
• M19: 16,123,060 km (0.115 R)
• M20: 17,157,978 km (0.056 R)
• M21: 17,691,893 km (0.085 R)
• M22: 18,862,945 km (0.063 R)
• M23: 19,575,629 km (0.093 R)
• M24: 22,054,915 km (0.117 R)
• M25: 22,369,070 km (0.113 R)
• M26: 22,686,068 km (0.074 R)
• M27: 27,537,228 km (0.112 R)
• M28: 28,269,210 km (0.054 R)
• M29: 28,639,914 km (0.045 R)
• M30: 31,129,821 km (0.045 R)
• M31: 33,243,489 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 410.3

Radius: 8

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.31 AU - 10.39 AU

Year: 8560 Days

Day: 5.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 53,074,361 km

• M1: 99,483 km (0.118 R)
• M2: 381,475 km (0.104 R)
• M3: 687,701 km (0.091 R)
• M4: 1,003,951 km (0.114 R)
• M5: 2,046,050 km (0.106 R)
• M6: 2,424,383 km (0.108 R)
• M7: 2,695,903 km (0.034 R)
• M8: 2,987,769 km (0.079 R)
• M9: 3,257,643 km (0.106 R)
• M10: 3,635,378 km (0.111 R)
• M11: 4,750,181 km (0.094 R)
• M12: 5,356,053 km (0.043 R)
• M13: 6,547,600 km (0.097 R)
• M14: 6,897,958 km (0.045 R)
• M15: 7,484,681 km (0.073 R)
• M16: 8,549,369 km (0.034 R)
• M17: 9,011,028 km (0.112 R)
• M18: 9,847,280 km (0.08 R)
• M19: 10,543,359 km (0.103 R)
• M20: 13,377,939 km (0.084 R)
• M21: 17,806,784 km (0.107 R)
• M22: 18,698,836 km (0.089 R)
• M23: 19,476,596 km (0.108 R)
• M24: 28,019,382 km (0.069 R)
• M25: 28,757,348 km (0.099 R)
• M26: 31,640,249 km (0.07 R)
• M27: 32,138,859 km (0.064 R)
• M28: 35,454,247 km (0.119 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86

Radius: 13.2

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 8.05 AU - 8.77 AU

Year: 8652 Days

Day: 11.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,074,361 km

• M1: 164,258 km (0.094 R)
• M2: 589,864 km (0.093 R)
• M3: 1,242,111 km (0.088 R)
• M4: 1,994,140 km (0.078 R)
• M5: 2,511,599 km (0.063 R)
• M6: 3,457,656 km (0.066 R)
• M7: 4,044,528 km (0.1 R)
• M8: 5,122,081 km (0.03 R)
• M9: 7,582,966 km (0.059 R)
• M10: 8,004,084 km (0.095 R)
• M11: 9,143,721 km (0.082 R)
• M12: 9,923,575 km (0.107 R)
• M13: 12,666,003 km (0.077 R)
• M14: 14,903,837 km (0.117 R)
• M15: 17,227,242 km (0.1 R)
• M16: 18,014,576 km (0.075 R)
• M17: 19,360,059 km (0.056 R)
• M18: 20,960,756 km (0.117 R)
• M19: 21,534,763 km (0.027 R)

Planet 10 - Gas Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.9

Radius: 8.3

Gravity: 10.57 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 7.82 AU - 12.28 AU

Year: 11303 Days

Day: 11.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 53,074,361 km

• M1: 103,223 km (0.081 R)
• M2: 377,435 km (0.099 R)
• M3: 722,857 km (0.11 R)
• M4: 1,157,439 km (0.107 R)
• M5: 1,989,652 km (0.038 R)
• M6: 2,493,198 km (0.103 R)
• M7: 3,467,978 km (0.09 R)
• M8: 3,916,622 km (0.112 R)
• M9: 4,344,322 km (0.11 R)
• M10: 4,739,709 km (0.085 R)
• M11: 5,027,386 km (0.075 R)
• M12: 7,296,487 km (0.104 R)
• M13: 9,759,017 km (0.075 R)
• M14: 12,067,611 km (0.114 R)
• M15: 12,727,787 km (0.085 R)
• M16: 16,759,001 km (0.111 R)
• M17: 17,353,802 km (0.056 R)
• M18: 19,792,397 km (0.097 R)
• M19: 21,481,506 km (0.052 R)
• M20: 22,361,142 km (0.054 R)
• M21: 23,356,267 km (0.086 R)
• M22: 34,625,325 km (0.119 R)
• M23: 35,711,555 km (0.12 R)
• M24: 36,201,638 km (0.11 R)
• M25: 37,446,292 km (0.046 R)
• M26: 41,082,717 km (0.036 R)
• M27: 44,381,649 km (0.095 R)
• M28: 51,969,702 km (0.067 R)
• M29: 53,074,333 km (0.04 R)

Kuiper Belt

Range: 30.9 - 46.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 333 - 10,388 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit