🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.44 AU - 0.66 AU

Year: 144 Days

Day: 31.9 Hours

Environment

Temp: 178 °C

Axial Tilt: 38.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 71,283,068 km

• M1: 152,739 km (0.105 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.05 AU - 2.29 AU

Year: 1129 Days

Day: 24.2 Hours

Environment

Temp: -73 °C

Axial Tilt: 5.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,283,068 km

• M1: 482,752 km (0.1 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.75 AU - 2.85 AU

Year: 1232 Days

Day: 41.5 Hours

Environment

Temp: -71 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.1

Radius: 13

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.71 AU - 6.29 AU

Year: 4555 Days

Day: 5.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 71,283,068 km

• M1: 169,195 km (0.036 R)
• M2: 890,706 km (0.118 R)
• M3: 2,073,426 km (0.073 R)
• M4: 3,635,527 km (0.077 R)
• M5: 4,214,471 km (0.069 R)
• M6: 4,653,691 km (0.116 R)
• M7: 5,993,639 km (0.05 R)
• M8: 7,038,131 km (0.106 R)
• M9: 13,166,109 km (0.092 R)
• M10: 13,943,718 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.8

Radius: 8.9

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 5.55 AU - 6.43 AU

Year: 5177 Days

Day: 14.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 71,283,068 km

• M1: 110,702 km (0.094 R)
• M2: 415,134 km (0.118 R)
• M3: 1,494,483 km (0.06 R)
• M4: 2,514,740 km (0.047 R)
• M5: 4,394,886 km (0.093 R)
• M6: 5,216,478 km (0.067 R)
• M7: 7,161,549 km (0.102 R)
• M8: 8,850,210 km (0.075 R)
• M9: 9,467,750 km (0.037 R)
• M10: 9,746,900 km (0.071 R)
• M11: 10,574,774 km (0.09 R)
• M12: 11,403,995 km (0.116 R)
• M13: 12,322,975 km (0.052 R)
• M14: 12,704,001 km (0.095 R)
• M15: 13,191,540 km (0.053 R)
• M16: 14,307,690 km (0.077 R)
• M17: 16,382,313 km (0.112 R)
• M18: 18,649,768 km (0.076 R)
• M19: 21,050,964 km (0.068 R)
• M20: 25,910,650 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.5

Radius: 9.8

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 5.85 AU - 6.17 AU

Year: 5202 Days

Day: 7.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 71,283,068 km

• M1: 122,221 km (0.086 R)
• M2: 520,002 km (0.078 R)
• M3: 884,572 km (0.108 R)
• M4: 1,487,452 km (0.119 R)
• M5: 1,907,822 km (0.101 R)
• M6: 2,646,087 km (0.1 R)
• M7: 3,118,368 km (0.1 R)
• M8: 3,543,974 km (0.078 R)
• M9: 4,141,467 km (0.091 R)
• M10: 5,788,390 km (0.078 R)
• M11: 6,525,459 km (0.112 R)
• M12: 9,385,770 km (0.091 R)
• M13: 9,824,391 km (0.089 R)
• M14: 10,656,754 km (0.116 R)
• M15: 12,272,561 km (0.102 R)
• M16: 13,287,283 km (0.088 R)
• M17: 16,039,734 km (0.06 R)
• M18: 16,551,808 km (0.109 R)
• M19: 17,016,309 km (0.104 R)
• M20: 17,609,016 km (0.043 R)
• M21: 19,214,650 km (0.1 R)
• M22: 20,714,518 km (0.112 R)
• M23: 25,680,868 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.7

Radius: 14.9

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 6.15 AU - 9.39 AU

Year: 7648 Days

Day: 14.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 71,283,068 km

• M1: 186,100 km (0.109 R)
• M2: 651,200 km (0.052 R)
• M3: 1,296,714 km (0.065 R)
• M4: 2,003,714 km (0.073 R)
• M5: 3,039,530 km (0.115 R)
• M6: 3,544,722 km (0.07 R)
• M7: 4,155,530 km (0.037 R)
• M8: 5,146,167 km (0.054 R)
• M9: 6,974,552 km (0.097 R)
• M10: 7,709,377 km (0.093 R)
• M11: 8,174,626 km (0.082 R)
• M12: 8,949,842 km (0.08 R)
• M13: 10,934,258 km (0.028 R)
• M14: 13,752,981 km (0.072 R)
• M15: 15,758,490 km (0.088 R)
• M16: 19,193,257 km (0.088 R)
• M17: 21,160,619 km (0.095 R)
• M18: 21,768,585 km (0.069 R)
• M19: 23,339,661 km (0.072 R)
• M20: 25,750,281 km (0.055 R)
• M21: 27,776,884 km (0.12 R)
• M22: 28,690,478 km (0.112 R)
• M23: 30,003,050 km (0.034 R)
• M24: 31,650,122 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 845.6

Radius: 12.2

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 8.43 AU - 8.95 AU

Year: 9045 Days

Day: 10.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,283,068 km

• M1: 151,842 km (0.101 R)
• M2: 781,798 km (0.101 R)
• M3: 1,181,674 km (0.115 R)
• M4: 2,296,477 km (0.106 R)
• M5: 2,720,587 km (0.106 R)
• M6: 3,360,118 km (0.102 R)
• M7: 4,043,630 km (0.101 R)
• M8: 4,818,099 km (0.074 R)
• M9: 6,362,697 km (0.093 R)
• M10: 7,088,845 km (0.085 R)
• M11: 9,505,598 km (0.07 R)
• M12: 10,663,037 km (0.118 R)
• M13: 12,025,425 km (0.076 R)
• M14: 13,136,039 km (0.064 R)
• M15: 14,961,433 km (0.11 R)
• M16: 15,560,722 km (0.095 R)
• M17: 18,270,089 km (0.085 R)
• M18: 21,783,395 km (0.067 R)
• M19: 23,609,237 km (0.113 R)
• M20: 27,464,673 km (0.052 R)
• M21: 29,489,480 km (0.072 R)
• M22: 30,538,461 km (0.114 R)
• M23: 31,503,666 km (0.067 R)
• M24: 32,158,306 km (0.044 R)
• M25: 42,832,264 km (0.091 R)
• M26: 44,860,063 km (0.086 R)
• M27: 47,234,630 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 385.2

Radius: 7.4

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 12.99 AU - 20.49 AU

Year: 24184 Days

Day: 24.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 71,283,068 km

• M1: 93,050 km (0.098 R)
• M2: 1,015,919 km (0.1 R)
• M3: 1,416,841 km (0.07 R)
• M4: 2,151,965 km (0.09 R)
• M5: 2,890,081 km (0.1 R)
• M6: 3,250,163 km (0.104 R)
• M7: 3,497,299 km (0.078 R)
• M8: 4,413,287 km (0.102 R)
• M9: 6,536,230 km (0.071 R)
• M10: 9,098,094 km (0.115 R)
• M11: 9,369,913 km (0.117 R)
• M12: 9,929,858 km (0.072 R)
• M13: 10,750,851 km (0.117 R)
• M14: 14,638,900 km (0.096 R)
• M15: 15,546,360 km (0.092 R)
• M16: 16,092,692 km (0.088 R)
• M17: 18,929,815 km (0.082 R)
• M18: 21,889,460 km (0.081 R)
• M19: 24,615,282 km (0.102 R)
• M20: 30,608,921 km (0.077 R)
• M21: 33,616,736 km (0.036 R)
• M22: 34,529,732 km (0.103 R)
• M23: 39,921,688 km (0.082 R)
• M24: 45,058,280 km (0.115 R)
• M25: 56,802,611 km (0.032 R)
• M26: 57,170,472 km (0.12 R)
• M27: 62,880,623 km (0.096 R)
• M28: 66,482,939 km (0.1 R)
• M29: 67,096,440 km (0.099 R)

Kuiper Belt

Range: 31.1 - 51.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 550 - 14,913 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit