🌌 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: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.46 AU - 0.62 AU

Year: 252 Days

Day: 32.1 Hours

Environment

Temp: -115 °C

Axial Tilt: 9.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 296.9

Radius: 14.6

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.76 AU - 0.94 AU

Year: 498 Days

Day: 5.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,835,383 km

• M1: 181,911 km (0.083 R)
• M2: 691,741 km (0.095 R)
• M3: 1,468,602 km (0.082 R)
• M4: 2,391,920 km (0.04 R)
• M5: 3,158,909 km (0.112 R)
• M6: 3,889,096 km (0.088 R)
• M7: 4,592,954 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85.1

Radius: 9.4

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.01 AU - 1.25 AU

Year: 764 Days

Day: 6.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,835,383 km

• M1: 116,986 km (0.077 R)
• M2: 431,739 km (0.112 R)
• M3: 968,347 km (0.068 R)
• M4: 1,821,055 km (0.071 R)
• M5: 3,696,713 km (0.058 R)
• M6: 4,034,954 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.9

Radius: 8.7

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.14 AU - 1.2 AU

Year: 805 Days

Day: 11.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,835,383 km

• M1: 111,600 km (0.109 R)
• M2: 452,534 km (0.114 R)
• M3: 1,034,619 km (0.103 R)
• M4: 1,579,305 km (0.077 R)
• M5: 1,934,450 km (0.108 R)
• M6: 2,391,322 km (0.076 R)
• M7: 2,709,666 km (0.118 R)
• M8: 3,307,908 km (0.083 R)
• M9: 4,337,441 km (0.105 R)
• M10: 4,609,858 km (0.077 R)
• M11: 5,341,542 km (0.067 R)
• M12: 6,262,167 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.9

Radius: 13.4

Gravity: 4.66 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.21 AU - 1.25 AU

Year: 867 Days

Day: 10.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,835,383 km

• M1: 166,802 km (0.105 R)
• M2: 765,792 km (0.119 R)
• M3: 1,578,557 km (0.107 R)
• M4: 2,102,299 km (0.069 R)
• M5: 2,530,298 km (0.09 R)
• M6: 3,108,644 km (0.075 R)
• M7: 3,699,107 km (0.098 R)
• M8: 4,247,832 km (0.098 R)
• M9: 5,088,572 km (0.115 R)
• M10: 5,509,690 km (0.119 R)
• M11: 7,579,825 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.7

Radius: 8.7

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.92 AU - 2.74 AU

Year: 2261 Days

Day: 5.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,835,383 km

• M1: 109,506 km (0.099 R)
• M2: 404,064 km (0.105 R)
• M3: 819,497 km (0.042 R)
• M4: 1,490,444 km (0.119 R)
• M5: 1,773,333 km (0.095 R)
• M6: 2,475,695 km (0.063 R)
• M7: 3,897,623 km (0.088 R)
• M8: 4,520,698 km (0.095 R)
• M9: 4,950,642 km (0.105 R)
• M10: 7,778,640 km (0.074 R)
• M11: 8,247,031 km (0.12 R)
• M12: 10,732,750 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71

Radius: 14.6

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 3.91 AU - 5.07 AU

Year: 6049 Days

Day: 7.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,835,383 km

• M1: 194,028 km (0.099 R)
• M2: 679,324 km (0.071 R)
• M3: 1,223,711 km (0.074 R)
• M4: 1,782,608 km (0.1 R)
• M5: 2,256,684 km (0.082 R)
• M6: 3,177,309 km (0.083 R)
• M7: 3,690,280 km (0.104 R)
• M8: 5,573,418 km (0.105 R)
• M9: 6,427,024 km (0.12 R)
• M10: 9,451,893 km (0.105 R)
• M11: 13,491,783 km (0.069 R)
• M12: 14,849,683 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 739.2

Radius: 13.5

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 4.12 AU - 5.78 AU

Year: 7002 Days

Day: 13.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 53,835,383 km

• M1: 167,998 km (0.119 R)
• M2: 688,300 km (0.075 R)
• M3: 1,492,987 km (0.071 R)
• M4: 1,999,076 km (0.072 R)
• M5: 2,601,507 km (0.076 R)
• M6: 3,411,430 km (0.095 R)
• M7: 4,099,281 km (0.116 R)
• M8: 5,139,285 km (0.081 R)
• M9: 5,785,548 km (0.104 R)
• M10: 6,731,306 km (0.11 R)
• M11: 7,816,938 km (0.11 R)
• M12: 9,016,114 km (0.056 R)
• M13: 11,164,938 km (0.061 R)
• M14: 11,674,019 km (0.028 R)
• M15: 12,738,707 km (0.09 R)
• M16: 13,983,661 km (0.103 R)
• M17: 14,938,843 km (0.105 R)
• M18: 16,193,521 km (0.095 R)
• M19: 17,112,800 km (0.064 R)
• M20: 18,275,624 km (0.089 R)
• M21: 23,128,728 km (0.092 R)
• M22: 24,379,367 km (0.105 R)
• M23: 25,674,585 km (0.045 R)
• M24: 29,256,556 km (0.065 R)
• M25: 29,933,038 km (0.089 R)
• M26: 31,217,036 km (0.113 R)
• M27: 37,283,081 km (0.091 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.3

Radius: 11.8

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 4.84 AU - 6.96 AU

Year: 9112 Days

Day: 9.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,835,383 km

• M1: 156,928 km (0.085 R)
• M2: 813,962 km (0.107 R)
• M3: 1,342,192 km (0.093 R)
• M4: 2,204,025 km (0.11 R)
• M5: 8,268,873 km (0.114 R)
• M6: 10,347,386 km (0.043 R)
• M7: 14,414,652 km (0.035 R)
• M8: 15,191,813 km (0.061 R)
• M9: 16,829,760 km (0.056 R)
• M10: 19,942,892 km (0.11 R)
• M11: 20,518,096 km (0.093 R)
• M12: 23,000,523 km (0.092 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.4

Radius: 6.1

Gravity: 12.18 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 6.39 AU - 9.79 AU

Year: 14630 Days

Day: 17.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 53,835,383 km

• M1: 75,996 km (0.104 R)
• M2: 518,955 km (0.1 R)
• M3: 1,677,441 km (0.119 R)
• M4: 2,043,208 km (0.054 R)
• M5: 2,668,676 km (0.098 R)
• M6: 3,240,290 km (0.112 R)
• M7: 4,440,214 km (0.116 R)
• M8: 7,123,551 km (0.041 R)
• M9: 7,678,560 km (0.09 R)
• M10: 9,117,990 km (0.111 R)
• M11: 10,893,867 km (0.101 R)
• M12: 11,116,917 km (0.11 R)
• M13: 11,399,956 km (0.085 R)
• M14: 13,775,870 km (0.108 R)
• M15: 16,389,943 km (0.103 R)
• M16: 17,890,409 km (0.078 R)
• M17: 30,043,591 km (0.076 R)
• M18: 30,482,810 km (0.084 R)
• M19: 31,712,355 km (0.055 R)
• M20: 33,795,057 km (0.101 R)
• M21: 36,090,486 km (0.115 R)
• M22: 37,592,748 km (0.049 R)
• M23: 38,617,045 km (0.096 R)
• M24: 41,529,566 km (0.114 R)
• M25: 41,937,818 km (0.071 R)
• M26: 48,686,926 km (0.059 R)
• M27: 52,873,572 km (0.115 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 367 - 11,821 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit