🌌 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: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.58 AU - 0.6 AU

Year: 293 Days

Day: 35.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 3.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,364,464 km

• M1: 430,094 km (0.088 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.61 AU - 0.73 AU

Year: 354 Days

Day: 35.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 9.3 °

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: 67.6

Radius: 10.3

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.72 AU - 1.04 AU

Year: 533 Days

Day: 6.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 42,364,464 km

• M1: 130,001 km (0.089 R)
• M2: 527,183 km (0.065 R)
• M3: 924,365 km (0.117 R)
• M4: 1,387,371 km (0.109 R)
• M5: 2,022,114 km (0.045 R)
• M6: 2,740,783 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.2

Radius: 14

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.05 AU - 1.23 AU

Year: 786 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,364,464 km

• M1: 174,132 km (0.109 R)
• M2: 612,304 km (0.114 R)
• M3: 1,176,587 km (0.065 R)
• M4: 1,652,907 km (0.119 R)
• M5: 2,199,238 km (0.051 R)
• M6: 3,507,920 km (0.069 R)
• M7: 4,008,625 km (0.117 R)
• M8: 4,624,968 km (0.094 R)
• M9: 5,137,340 km (0.056 R)
• M10: 5,926,768 km (0.04 R)
• M11: 6,641,547 km (0.045 R)
• M12: 7,484,232 km (0.103 R)
• M13: 9,001,005 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.5

Radius: 12.7

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.16 AU - 1.24 AU

Year: 849 Days

Day: 13.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 42,364,464 km

• M1: 162,762 km (0.103 R)
• M2: 561,590 km (0.088 R)
• M3: 1,068,278 km (0.037 R)
• M4: 2,328,192 km (0.074 R)
• M5: 2,779,678 km (0.09 R)
• M6: 3,265,871 km (0.062 R)
• M7: 4,137,428 km (0.11 R)
• M8: 5,649,713 km (0.062 R)
• M9: 6,359,705 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745

Radius: 13.7

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.97 AU - 2.35 AU

Year: 2050 Days

Day: 6.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,364,464 km

• M1: 170,392 km (0.075 R)
• M2: 642,373 km (0.037 R)
• M3: 1,131,110 km (0.101 R)
• M4: 1,625,530 km (0.101 R)
• M5: 2,129,974 km (0.075 R)
• M6: 2,681,991 km (0.1 R)
• M7: 3,429,531 km (0.117 R)
• M8: 4,194,276 km (0.106 R)
• M9: 5,481,565 km (0.119 R)
• M10: 5,939,933 km (0.082 R)
• M11: 6,662,491 km (0.101 R)
• M12: 7,101,261 km (0.075 R)
• M13: 7,736,304 km (0.088 R)
• M14: 8,283,683 km (0.086 R)
• M15: 9,153,445 km (0.064 R)
• M16: 10,479,630 km (0.072 R)
• M17: 11,419,703 km (0.117 R)
• M18: 12,090,650 km (0.099 R)
• M19: 14,901,145 km (0.102 R)
• M20: 15,750,711 km (0.095 R)
• M21: 16,236,605 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.1

Radius: 11.4

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 3.01 AU - 3.79 AU

Year: 4048 Days

Day: 12 Hours

Environment

Temp: -211 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,364,464 km

• M1: 141,819 km (0.086 R)
• M2: 813,663 km (0.103 R)
• M3: 1,220,868 km (0.109 R)
• M4: 2,053,829 km (0.074 R)
• M5: 3,414,571 km (0.072 R)
• M6: 5,690,853 km (0.116 R)
• M7: 6,841,260 km (0.049 R)
• M8: 7,753,658 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 609

Radius: 8.3

Gravity: 8.84 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 5.17 AU - 6.29 AU

Year: 8856 Days

Day: 13.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 42,364,464 km

• M1: 103,372 km (0.115 R)
• M2: 452,683 km (0.072 R)
• M3: 773,720 km (0.102 R)
• M4: 1,074,562 km (0.106 R)
• M5: 1,545,346 km (0.115 R)
• M6: 2,816,928 km (0.111 R)
• M7: 3,335,285 km (0.078 R)
• M8: 4,230,478 km (0.116 R)
• M9: 4,763,346 km (0.112 R)
• M10: 5,214,982 km (0.06 R)
• M11: 6,309,290 km (0.098 R)
• M12: 6,706,024 km (0.113 R)
• M13: 7,005,070 km (0.073 R)
• M14: 8,248,677 km (0.11 R)
• M15: 11,801,626 km (0.087 R)
• M16: 13,553,717 km (0.051 R)
• M17: 15,667,235 km (0.026 R)
• M18: 16,128,296 km (0.114 R)
• M19: 16,734,167 km (0.06 R)
• M20: 17,777,762 km (0.077 R)
• M21: 20,929,640 km (0.06 R)
• M22: 26,698,582 km (0.114 R)
• M23: 29,097,534 km (0.069 R)
• M24: 31,532,239 km (0.072 R)
• M25: 33,662,214 km (0.074 R)
• M26: 34,873,807 km (0.102 R)
• M27: 35,546,848 km (0.091 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 144.3

Radius: 8

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 7.31 AU - 8.77 AU

Year: 14720 Days

Day: 23.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,364,464 km

• M1: 99,632 km (0.114 R)
• M2: 440,416 km (0.103 R)
• M3: 1,103,284 km (0.075 R)
• M4: 1,434,195 km (0.109 R)
• M5: 1,845,439 km (0.114 R)
• M6: 2,266,109 km (0.067 R)
• M7: 5,097,697 km (0.074 R)
• M8: 6,123,490 km (0.042 R)
• M9: 10,633,117 km (0.114 R)
• M10: 13,723,061 km (0.11 R)
• M11: 14,183,524 km (0.104 R)
• M12: 14,654,308 km (0.049 R)
• M13: 20,393,182 km (0.102 R)
• M14: 20,691,629 km (0.113 R)
• M15: 21,220,907 km (0.079 R)
• M16: 22,070,772 km (0.117 R)
• M17: 23,347,291 km (0.096 R)
• M18: 25,267,380 km (0.089 R)
• M19: 26,309,927 km (0.055 R)
• M20: 28,853,540 km (0.115 R)
• M21: 33,795,356 km (0.036 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 113.1

Radius: 3

Gravity: 12.57 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 8.12 AU - 11.9 AU

Year: 20449 Days

Day: 20.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,364,464 km

• M1: 38,895 km (0.074 R)
• M2: 207,492 km (0.106 R)
• M3: 336,894 km (0.07 R)
• M4: 494,122 km (0.073 R)
• M5: 1,123,929 km (0.07 R)
• M6: 2,766,663 km (0.069 R)
• M7: 4,689,145 km (0.07 R)
• M8: 8,774,663 km (0.108 R)
• M9: 9,692,147 km (0.099 R)
• M10: 9,835,013 km (0.098 R)
• M11: 13,405,166 km (0.112 R)
• M12: 17,050,567 km (0.072 R)
• M13: 21,546,731 km (0.092 R)
• M14: 26,123,379 km (0.095 R)
• M15: 31,099,901 km (0.079 R)
• M16: 32,889,541 km (0.111 R)
• M17: 35,644,236 km (0.097 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: 508 - 16,112 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit