🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.27

Radius: 1.61

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.55 AU - 0.65 AU

Year: 305 Days

Day: 42.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.1

Radius: 10.8

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.92 AU - 1.06 AU

Year: 646 Days

Day: 12.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,673,296 km

• M1: 134,788 km (0.118 R)
• M2: 497,114 km (0.058 R)
• M3: 905,965 km (0.061 R)
• M4: 1,250,638 km (0.112 R)
• M5: 1,617,153 km (0.079 R)
• M6: 2,192,058 km (0.059 R)
• M7: 3,985,736 km (0.083 R)
• M8: 5,429,056 km (0.092 R)
• M9: 5,893,857 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361

Radius: 11.4

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.97 AU - 1.61 AU

Year: 961 Days

Day: 6.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 60,673,296 km

• M1: 141,819 km (0.105 R)
• M2: 504,893 km (0.105 R)
• M3: 1,052,421 km (0.068 R)
• M4: 1,781,112 km (0.034 R)
• M5: 2,585,799 km (0.099 R)
• M6: 3,059,426 km (0.117 R)
• M7: 4,290,317 km (0.087 R)
• M8: 4,872,851 km (0.037 R)
• M9: 5,416,191 km (0.086 R)
• M10: 6,176,746 km (0.111 R)
• M11: 7,226,026 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.3

Radius: 9.1

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.65 AU - 1.77 AU

Year: 1467 Days

Day: 10.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,673,296 km

• M1: 113,246 km (0.051 R)
• M2: 715,975 km (0.082 R)
• M3: 1,347,578 km (0.028 R)
• M4: 2,586,547 km (0.116 R)
• M5: 3,078,425 km (0.057 R)
• M6: 3,820,879 km (0.025 R)
• M7: 6,390,223 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.9

Radius: 14.9

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 2.05 AU - 2.11 AU

Year: 1968 Days

Day: 5.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,673,296 km

• M1: 185,352 km (0.107 R)
• M2: 849,716 km (0.05 R)
• M3: 1,608,476 km (0.087 R)
• M4: 2,155,107 km (0.111 R)
• M5: 2,976,549 km (0.096 R)
• M6: 3,617,127 km (0.057 R)
• M7: 4,269,523 km (0.116 R)
• M8: 5,021,701 km (0.099 R)
• M9: 7,040,076 km (0.104 R)
• M10: 8,529,921 km (0.105 R)
• M11: 9,015,665 km (0.107 R)
• M12: 9,554,068 km (0.091 R)
• M13: 10,149,617 km (0.077 R)
• M14: 12,370,697 km (0.074 R)
• M15: 12,868,110 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 697.7

Radius: 11.2

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 3.8 AU - 4.46 AU

Year: 5506 Days

Day: 5.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 60,673,296 km

• M1: 139,276 km (0.09 R)
• M2: 516,561 km (0.044 R)
• M3: 1,309,131 km (0.065 R)
• M4: 2,067,592 km (0.107 R)
• M5: 2,962,786 km (0.044 R)
• M6: 3,320,325 km (0.059 R)
• M7: 4,941,816 km (0.104 R)
• M8: 6,832,135 km (0.043 R)
• M9: 9,455,633 km (0.045 R)
• M10: 11,636,321 km (0.113 R)
• M11: 13,000,354 km (0.084 R)
• M12: 13,478,020 km (0.104 R)
• M13: 14,468,358 km (0.109 R)
• M14: 15,097,118 km (0.091 R)
• M15: 16,286,870 km (0.116 R)
• M16: 18,056,014 km (0.082 R)
• M17: 18,717,985 km (0.065 R)
• M18: 19,395,962 km (0.056 R)
• M19: 20,020,085 km (0.063 R)
• M20: 20,872,942 km (0.1 R)
• M21: 21,528,480 km (0.104 R)
• M22: 23,111,225 km (0.085 R)
• M23: 23,891,678 km (0.109 R)
• M24: 25,013,662 km (0.106 R)
• M25: 25,753,273 km (0.101 R)
• M26: 26,170,502 km (0.077 R)
• M27: 27,190,011 km (0.088 R)
• M28: 27,884,445 km (0.108 R)
• M29: 29,946,502 km (0.037 R)
• M30: 31,916,407 km (0.071 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 756.1

Radius: 4.1

Gravity: 44.98 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 7.46 AU - 7.6 AU

Year: 13555 Days

Day: 23.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,673,296 km

• M1: 145,559 km (0.101 R)
• M2: 333,304 km (0.086 R)
• M3: 528,679 km (0.107 R)
• M4: 1,166,415 km (0.101 R)
• M5: 1,704,219 km (0.08 R)
• M6: 3,591,994 km (0.089 R)
• M7: 4,574,553 km (0.103 R)
• M8: 4,737,615 km (0.1 R)
• M9: 7,674,371 km (0.108 R)
• M10: 10,137,051 km (0.062 R)
• M11: 10,927,077 km (0.105 R)
• M12: 11,818,082 km (0.114 R)
• M13: 17,638,636 km (0.103 R)
• M14: 23,634,070 km (0.052 R)
• M15: 24,916,573 km (0.053 R)
• M16: 33,844,424 km (0.06 R)
• M17: 35,853,972 km (0.106 R)
• M18: 36,627,543 km (0.098 R)
• M19: 40,385,292 km (0.095 R)
• M20: 45,283,874 km (0.03 R)
• M21: 52,026,998 km (0.049 R)
• M22: 56,239,375 km (0.034 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: 515 - 12,212 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit