🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.54 AU - 0.64 AU

Year: 293 Days

Day: 22.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.55 AU - 0.77 AU

Year: 346 Days

Day: 47.1 Hours

Environment

Temp: -136 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 735.1

Radius: 8.2

Gravity: 10.93 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.74 AU - 1.02 AU

Year: 533 Days

Day: 14.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 30,687,596 km

• M1: 102,026 km (0.047 R)
• M2: 361,728 km (0.112 R)
• M3: 764,296 km (0.068 R)
• M4: 1,081,742 km (0.101 R)
• M5: 1,376,899 km (0.085 R)
• M6: 1,806,245 km (0.073 R)
• M7: 2,303,209 km (0.105 R)
• M8: 2,799,126 km (0.118 R)
• M9: 3,277,540 km (0.032 R)
• M10: 3,556,091 km (0.096 R)
• M11: 3,919,614 km (0.11 R)
• M12: 4,427,648 km (0.097 R)
• M13: 5,296,812 km (0.086 R)
• M14: 5,808,437 km (0.096 R)
• M15: 6,237,034 km (0.077 R)
• M16: 6,587,243 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 613.4

Radius: 12.3

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.47 AU - 1.87 AU

Year: 1393 Days

Day: 14.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,687,596 km

• M1: 153,188 km (0.046 R)
• M2: 543,639 km (0.061 R)
• M3: 949,797 km (0.057 R)
• M4: 1,569,581 km (0.088 R)
• M5: 2,306,799 km (0.088 R)
• M6: 3,061,969 km (0.054 R)
• M7: 3,825,218 km (0.066 R)
• M8: 4,561,239 km (0.115 R)
• M9: 5,730,496 km (0.102 R)
• M10: 6,890,628 km (0.11 R)
• M11: 8,008,572 km (0.054 R)
• M12: 8,397,676 km (0.076 R)
• M13: 9,094,055 km (0.071 R)
• M14: 9,859,996 km (0.053 R)
• M15: 11,450,969 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766.3

Radius: 14.7

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 2.16 AU - 2.4 AU

Year: 2223 Days

Day: 9.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,687,596 km

• M1: 183,407 km (0.09 R)
• M2: 758,611 km (0.086 R)
• M3: 1,531,583 km (0.119 R)
• M4: 2,107,834 km (0.09 R)
• M5: 2,919,851 km (0.095 R)
• M6: 3,460,498 km (0.043 R)
• M7: 4,638,432 km (0.112 R)
• M8: 5,498,769 km (0.117 R)
• M9: 6,069,634 km (0.101 R)
• M10: 7,157,211 km (0.077 R)
• M11: 10,040,560 km (0.101 R)
• M12: 10,593,474 km (0.115 R)
• M13: 11,680,452 km (0.115 R)
• M14: 12,375,783 km (0.076 R)
• M15: 13,894,650 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.8

Radius: 11.9

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 2.55 AU - 2.89 AU

Year: 2896 Days

Day: 13.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,687,596 km

• M1: 147,952 km (0.098 R)
• M2: 797,805 km (0.068 R)
• M3: 1,213,987 km (0.113 R)
• M4: 1,826,141 km (0.104 R)
• M5: 2,358,261 km (0.044 R)
• M6: 3,721,696 km (0.117 R)
• M7: 4,696,326 km (0.116 R)
• M8: 7,529,560 km (0.047 R)
• M9: 7,980,298 km (0.071 R)
• M10: 11,074,730 km (0.087 R)
• M11: 12,047,565 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 381.6

Radius: 12.8

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 3.15 AU - 3.21 AU

Year: 3661 Days

Day: 5.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 30,687,596 km

• M1: 163,959 km (0.104 R)
• M2: 1,181,823 km (0.026 R)
• M3: 1,632,262 km (0.058 R)
• M4: 3,123,753 km (0.117 R)
• M5: 4,148,050 km (0.101 R)
• M6: 5,384,476 km (0.117 R)
• M7: 8,846,620 km (0.09 R)
• M8: 9,958,281 km (0.112 R)
• M9: 11,241,532 km (0.077 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.6

Radius: 14.9

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.91 AU - 4.29 AU

Year: 5360 Days

Day: 6.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,687,596 km

• M1: 185,501 km (0.088 R)
• M2: 667,655 km (0.093 R)
• M3: 1,138,739 km (0.115 R)
• M4: 2,211,505 km (0.118 R)
• M5: 2,855,075 km (0.063 R)
• M6: 3,579,727 km (0.118 R)
• M7: 4,136,980 km (0.111 R)
• M8: 4,988,341 km (0.106 R)
• M9: 5,542,003 km (0.077 R)
• M10: 8,069,309 km (0.112 R)
• M11: 8,835,549 km (0.115 R)
• M12: 9,649,811 km (0.109 R)
• M13: 11,665,343 km (0.083 R)
• M14: 13,894,650 km (0.109 R)
• M15: 15,743,979 km (0.103 R)
• M16: 17,250,579 km (0.049 R)
• M17: 20,409,937 km (0.063 R)
• M18: 24,483,337 km (0.089 R)
• M19: 25,038,046 km (0.081 R)
• M20: 27,425,628 km (0.094 R)
• M21: 29,158,271 km (0.107 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 512 - 18,262 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit