🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.42 AU - 0.64 AU

Year: 245 Days

Day: 31.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 146.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.45 AU - 0.67 AU

Year: 266 Days

Day: 41.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 57.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.8

Radius: 13.9

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.66 AU - 0.76 AU

Year: 380 Days

Day: 14.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,173,686 km

• M1: 173,085 km (0.087 R)
• M2: 607,218 km (0.033 R)
• M3: 1,107,623 km (0.091 R)
• M4: 1,701,526 km (0.116 R)
• M5: 2,296,028 km (0.114 R)
• M6: 2,808,251 km (0.033 R)
• M7: 3,622,961 km (0.095 R)
• M8: 5,143,324 km (0.108 R)
• M9: 5,757,274 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.2

Radius: 13.5

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.8 AU - 1.14 AU

Year: 607 Days

Day: 14.2 Hours

Environment

Temp: -157 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,173,686 km

• M1: 173,085 km (0.058 R)
• M2: 607,068 km (0.08 R)
• M3: 2,735,846 km (0.034 R)
• M4: 3,435,964 km (0.115 R)
• M5: 4,209,086 km (0.093 R)
• M6: 4,645,612 km (0.049 R)
• M7: 5,095,752 km (0.111 R)
• M8: 5,592,716 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.1

Radius: 9.7

Gravity: 10.27 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.58 AU - 2.5 AU

Year: 1853 Days

Day: 9.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,173,686 km

• M1: 120,725 km (0.112 R)
• M2: 575,054 km (0.027 R)
• M3: 877,242 km (0.089 R)
• M4: 1,461,870 km (0.103 R)
• M5: 1,820,307 km (0.1 R)
• M6: 2,289,147 km (0.098 R)
• M7: 2,807,054 km (0.106 R)
• M8: 3,719,901 km (0.108 R)
• M9: 4,215,369 km (0.088 R)
• M10: 4,541,642 km (0.098 R)
• M11: 5,085,580 km (0.048 R)
• M12: 5,432,347 km (0.1 R)
• M13: 7,498,144 km (0.086 R)
• M14: 8,416,675 km (0.117 R)
• M15: 9,103,180 km (0.085 R)
• M16: 9,616,002 km (0.11 R)
• M17: 10,774,637 km (0.119 R)
• M18: 11,193,511 km (0.097 R)
• M19: 12,064,171 km (0.069 R)
• M20: 12,809,617 km (0.115 R)
• M21: 14,947,520 km (0.103 R)
• M22: 15,710,320 km (0.116 R)
• M23: 17,004,640 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.5

Radius: 9.7

Gravity: 10.24 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 5.51 AU - 6.47 AU

Year: 9321 Days

Day: 5.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 50,173,686 km

• M1: 120,576 km (0.081 R)
• M2: 449,691 km (0.117 R)
• M3: 845,228 km (0.102 R)
• M4: 1,160,879 km (0.076 R)
• M5: 1,643,781 km (0.115 R)
• M6: 2,546,006 km (0.057 R)
• M7: 3,670,234 km (0.04 R)
• M8: 4,242,596 km (0.088 R)
• M9: 4,565,428 km (0.058 R)
• M10: 5,227,997 km (0.095 R)
• M11: 5,531,082 km (0.074 R)
• M12: 6,511,397 km (0.077 R)
• M13: 7,949,631 km (0.061 R)
• M14: 8,396,928 km (0.085 R)
• M15: 9,244,400 km (0.052 R)
• M16: 10,461,529 km (0.063 R)
• M17: 11,554,940 km (0.086 R)
• M18: 15,291,894 km (0.11 R)
• M19: 16,843,224 km (0.077 R)
• M20: 19,765,469 km (0.084 R)
• M21: 22,652,708 km (0.095 R)
• M22: 25,041,936 km (0.116 R)
• M23: 26,890,816 km (0.06 R)
• M24: 28,104,354 km (0.116 R)
• M25: 28,724,736 km (0.114 R)
• M26: 31,077,462 km (0.088 R)
• M27: 34,020,351 km (0.102 R)
• M28: 34,606,775 km (0.108 R)
• M29: 44,232,650 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 437.5

Radius: 6.6

Gravity: 10.04 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 7.63 AU - 7.63 AU

Year: 13400 Days

Day: 17.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,173,686 km

• M1: 82,279 km (0.111 R)
• M2: 295,007 km (0.042 R)
• M3: 539,450 km (0.077 R)
• M4: 836,850 km (0.042 R)
• M5: 1,355,058 km (0.075 R)
• M6: 1,882,240 km (0.112 R)
• M7: 2,723,579 km (0.105 R)
• M8: 3,099,369 km (0.118 R)
• M9: 7,084,806 km (0.054 R)
• M10: 15,556,234 km (0.096 R)
• M11: 18,700,931 km (0.116 R)
• M12: 20,298,187 km (0.107 R)
• M13: 20,878,178 km (0.113 R)
• M14: 21,984,454 km (0.076 R)
• M15: 25,921,870 km (0.069 R)
• M16: 26,999,723 km (0.12 R)
• M17: 28,931,331 km (0.067 R)
• M18: 31,280,915 km (0.07 R)
• M19: 36,720,742 km (0.083 R)
• M20: 38,707,551 km (0.089 R)
• M21: 45,940,908 km (0.043 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 426 - 19,146 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit