🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.48 AU - 0.6 AU

Year: 260 Days

Day: 29.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.46

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.49 AU - 0.61 AU

Year: 268 Days

Day: 44.8 Hours

Environment

Temp: -112 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.55 AU - 0.79 AU

Year: 360 Days

Day: 35.2 Hours

Environment

Temp: -128 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 49,453,889 km

• M1: 17,204 km (0.051 R)
• M2: 44,730 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 969.4

Radius: 10.3

Gravity: 9.14 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.77 AU - 0.95 AU

Year: 523 Days

Day: 9.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,453,889 km

• M1: 128,355 km (0.099 R)
• M2: 537,356 km (0.072 R)
• M3: 1,014,722 km (0.064 R)
• M4: 1,586,934 km (0.044 R)
• M5: 2,284,659 km (0.095 R)
• M6: 2,765,466 km (0.093 R)
• M7: 4,359,282 km (0.117 R)
• M8: 5,239,965 km (0.061 R)
• M9: 6,736,542 km (0.119 R)
• M10: 7,505,774 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.1

Radius: 12.5

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.14 AU - 1.22 AU

Year: 841 Days

Day: 6.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,453,889 km

• M1: 156,779 km (0.04 R)
• M2: 562,488 km (0.116 R)
• M3: 1,380,190 km (0.095 R)
• M4: 2,084,048 km (0.077 R)
• M5: 2,814,235 km (0.115 R)
• M6: 3,475,308 km (0.067 R)
• M7: 4,753,024 km (0.054 R)
• M8: 5,225,454 km (0.095 R)
• M9: 6,265,308 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 940

Radius: 9

Gravity: 11.6 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.66 AU - 2.66 AU

Year: 2083 Days

Day: 8.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 49,453,889 km

• M1: 111,899 km (0.087 R)
• M2: 392,246 km (0.057 R)
• M3: 750,533 km (0.114 R)
• M4: 1,038,957 km (0.099 R)
• M5: 1,696,589 km (0.106 R)
• M6: 2,451,161 km (0.041 R)
• M7: 2,865,697 km (0.056 R)
• M8: 3,538,887 km (0.095 R)
• M9: 3,951,927 km (0.069 R)
• M10: 4,439,018 km (0.039 R)
• M11: 4,719,214 km (0.107 R)
• M12: 5,103,531 km (0.107 R)
• M13: 5,387,468 km (0.106 R)
• M14: 5,909,565 km (0.079 R)
• M15: 6,741,778 km (0.059 R)
• M16: 7,348,547 km (0.114 R)
• M17: 8,277,849 km (0.076 R)
• M18: 9,318,451 km (0.081 R)
• M19: 9,924,921 km (0.087 R)
• M20: 10,331,229 km (0.067 R)
• M21: 10,941,887 km (0.106 R)
• M22: 11,576,482 km (0.071 R)
• M23: 12,068,359 km (0.059 R)
• M24: 12,488,729 km (0.095 R)
• M25: 14,787,151 km (0.08 R)
• M26: 15,074,828 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.5

Radius: 9.5

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.98 AU - 2.84 AU

Year: 2454 Days

Day: 8.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 49,453,889 km

• M1: 120,725 km (0.048 R)
• M2: 454,329 km (0.083 R)
• M3: 836,402 km (0.079 R)
• M4: 1,144,873 km (0.113 R)
• M5: 1,540,858 km (0.1 R)
• M6: 2,052,034 km (0.115 R)
• M7: 2,430,068 km (0.086 R)
• M8: 3,060,174 km (0.104 R)
• M9: 3,449,278 km (0.112 R)
• M10: 4,558,397 km (0.092 R)
• M11: 4,886,315 km (0.081 R)
• M12: 5,324,487 km (0.062 R)
• M13: 5,915,100 km (0.113 R)
• M14: 7,227,372 km (0.106 R)
• M15: 7,523,576 km (0.104 R)
• M16: 8,267,676 km (0.102 R)
• M17: 9,196,978 km (0.081 R)
• M18: 9,545,242 km (0.074 R)
• M19: 11,183,488 km (0.093 R)
• M20: 11,580,521 km (0.042 R)
• M21: 11,986,978 km (0.12 R)
• M22: 15,491,458 km (0.103 R)
• M23: 15,985,280 km (0.089 R)
• M24: 17,423,814 km (0.065 R)
• M25: 17,850,168 km (0.101 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.9

Radius: 13.6

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 2.21 AU - 2.89 AU

Year: 2671 Days

Day: 9.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 49,453,889 km

• M1: 173,085 km (0.118 R)
• M2: 993,330 km (0.099 R)
• M3: 2,311,736 km (0.113 R)
• M4: 3,481,292 km (0.067 R)
• M5: 4,675,681 km (0.088 R)
• M6: 5,400,932 km (0.081 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394

Radius: 11.2

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.51 AU - 4.11 AU

Year: 3950 Days

Day: 6.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 49,453,889 km

• M1: 139,575 km (0.081 R)
• M2: 509,680 km (0.056 R)
• M3: 1,125,874 km (0.059 R)
• M4: 1,652,308 km (0.11 R)
• M5: 2,381,449 km (0.053 R)
• M6: 3,386,148 km (0.104 R)
• M7: 5,598,850 km (0.081 R)
• M8: 5,994,985 km (0.045 R)
• M9: 6,932,964 km (0.036 R)
• M10: 7,297,384 km (0.032 R)
• M11: 7,706,534 km (0.12 R)
• M12: 8,434,178 km (0.069 R)
• M13: 8,885,216 km (0.11 R)
• M14: 10,532,887 km (0.113 R)
• M15: 11,471,015 km (0.104 R)
• M16: 12,112,341 km (0.073 R)
• M17: 12,687,246 km (0.099 R)
• M18: 14,035,571 km (0.103 R)
• M19: 15,374,772 km (0.028 R)
• M20: 17,793,171 km (0.067 R)
• M21: 21,143,714 km (0.052 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 143.1

Radius: 7.3

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 9.26 AU - 12.12 AU

Year: 22929 Days

Day: 15.1 Hours

Environment

Temp: -234 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,453,889 km

• M1: 90,806 km (0.084 R)
• M2: 816,655 km (0.093 R)
• M3: 1,561,353 km (0.114 R)
• M4: 2,153,312 km (0.083 R)
• M5: 5,687,561 km (0.118 R)
• M6: 6,562,111 km (0.066 R)
• M7: 9,872,412 km (0.061 R)
• M8: 10,488,905 km (0.076 R)
• M9: 14,218,081 km (0.119 R)
• M10: 19,531,648 km (0.12 R)
• M11: 20,749,673 km (0.116 R)
• M12: 21,504,395 km (0.097 R)
• M13: 23,606,394 km (0.116 R)
• M14: 24,893,834 km (0.111 R)
• M15: 39,159,337 km (0.114 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 488 - 13,307 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit