🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.46 AU - 0.7 AU

Year: 285 Days

Day: 47.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,883,884 km

• M1: 22,140 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.8

Radius: 9.9

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.65 AU - 0.79 AU

Year: 394 Days

Day: 6.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,883,884 km

• M1: 123,119 km (0.117 R)
• M2: 442,211 km (0.088 R)
• M3: 953,088 km (0.073 R)
• M4: 1,312,572 km (0.081 R)
• M5: 1,815,221 km (0.04 R)
• M6: 2,126,983 km (0.088 R)
• M7: 2,771,600 km (0.107 R)
• M8: 3,111,486 km (0.067 R)
• M9: 3,458,703 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 823.5

Radius: 10.6

Gravity: 7.33 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.39 AU - 1.65 AU

Year: 1210 Days

Day: 6.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,883,884 km

• M1: 131,796 km (0.072 R)
• M2: 841,338 km (0.118 R)
• M3: 1,211,593 km (0.065 R)
• M4: 1,556,715 km (0.061 R)
• M5: 1,916,947 km (0.073 R)
• M6: 2,345,096 km (0.06 R)
• M7: 3,114,927 km (0.073 R)
• M8: 3,993,814 km (0.072 R)
• M9: 4,794,163 km (0.105 R)
• M10: 5,274,073 km (0.054 R)
• M11: 5,698,332 km (0.117 R)
• M12: 6,145,181 km (0.075 R)
• M13: 6,663,688 km (0.098 R)
• M14: 7,365,750 km (0.115 R)
• M15: 8,916,931 km (0.1 R)
• M16: 9,551,525 km (0.11 R)
• M17: 10,476,788 km (0.11 R)
• M18: 11,114,823 km (0.077 R)
• M19: 12,468,384 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.9

Radius: 8.7

Gravity: 9.95 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.37 AU - 1.89 AU

Year: 1344 Days

Day: 14.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 164.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,883,884 km

• M1: 109,057 km (0.108 R)
• M2: 448,794 km (0.03 R)
• M3: 749,485 km (0.105 R)
• M4: 1,227,002 km (0.119 R)
• M5: 1,558,211 km (0.11 R)
• M6: 2,751,254 km (0.119 R)
• M7: 3,058,080 km (0.03 R)
• M8: 3,561,477 km (0.057 R)
• M9: 4,154,632 km (0.082 R)
• M10: 4,617,488 km (0.112 R)
• M11: 4,971,736 km (0.067 R)
• M12: 5,429,505 km (0.111 R)
• M13: 6,309,589 km (0.097 R)
• M14: 6,623,296 km (0.114 R)
• M15: 7,955,764 km (0.113 R)
• M16: 8,524,087 km (0.091 R)
• M17: 10,831,185 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.6

Radius: 10.3

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.4 AU - 2.02 AU

Year: 1444 Days

Day: 13.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,883,884 km

• M1: 128,056 km (0.089 R)
• M2: 454,030 km (0.118 R)
• M3: 780,302 km (0.103 R)
• M4: 1,224,459 km (0.028 R)
• M5: 1,700,180 km (0.11 R)
• M6: 2,949,172 km (0.076 R)
• M7: 3,397,368 km (0.073 R)
• M8: 3,751,615 km (0.11 R)
• M9: 4,312,757 km (0.069 R)
• M10: 4,693,484 km (0.118 R)
• M11: 5,785,698 km (0.104 R)
• M12: 7,277,188 km (0.106 R)
• M13: 9,780,709 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871.6

Radius: 13.8

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.68 AU - 2.52 AU

Year: 1965 Days

Day: 9.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,883,884 km

• M1: 171,589 km (0.05 R)
• M2: 622,477 km (0.106 R)
• M3: 1,478,027 km (0.039 R)
• M4: 1,942,080 km (0.068 R)
• M5: 2,730,460 km (0.039 R)
• M6: 3,323,616 km (0.063 R)
• M7: 3,778,244 km (0.099 R)
• M8: 4,622,574 km (0.091 R)
• M9: 5,192,093 km (0.117 R)
• M10: 5,685,916 km (0.113 R)
• M11: 6,687,025 km (0.094 R)
• M12: 7,130,583 km (0.065 R)
• M13: 8,452,728 km (0.114 R)
• M14: 9,206,103 km (0.104 R)
• M15: 10,075,417 km (0.107 R)
• M16: 11,190,070 km (0.119 R)
• M17: 13,013,968 km (0.105 R)
• M18: 14,426,620 km (0.085 R)
• M19: 15,793,047 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.9

Radius: 12.7

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.46 AU - 4.42 AU

Year: 5050 Days

Day: 12.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,883,884 km

• M1: 157,975 km (0.05 R)
• M2: 587,920 km (0.048 R)
• M3: 1,045,988 km (0.081 R)
• M4: 1,789,789 km (0.105 R)
• M5: 2,556,478 km (0.111 R)
• M6: 3,709,130 km (0.065 R)
• M7: 4,822,138 km (0.117 R)
• M8: 5,710,749 km (0.049 R)
• M9: 6,438,244 km (0.106 R)
• M10: 8,750,279 km (0.113 R)
• M11: 9,459,073 km (0.04 R)
• M12: 10,849,885 km (0.112 R)
• M13: 13,701,220 km (0.079 R)
• M14: 16,390,990 km (0.084 R)
• M15: 17,339,440 km (0.091 R)
• M16: 29,294,405 km (0.075 R)
• M17: 29,755,016 km (0.044 R)
• M18: 32,620,414 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 967.4

Radius: 8

Gravity: 15.12 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 5.69 AU - 6.53 AU

Year: 9752 Days

Day: 18.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,883,884 km

• M1: 109,805 km (0.048 R)
• M2: 377,585 km (0.111 R)
• M3: 820,096 km (0.119 R)
• M4: 1,070,672 km (0.113 R)
• M5: 1,524,701 km (0.087 R)
• M6: 2,285,855 km (0.116 R)
• M7: 3,605,907 km (0.094 R)
• M8: 6,737,140 km (0.079 R)
• M9: 7,225,727 km (0.084 R)
• M10: 7,650,585 km (0.063 R)
• M11: 11,443,938 km (0.063 R)
• M12: 12,139,568 km (0.099 R)
• M13: 15,205,876 km (0.092 R)
• M14: 18,127,073 km (0.042 R)
• M15: 24,385,500 km (0.09 R)
• M16: 24,860,473 km (0.079 R)
• M17: 31,050,983 km (0.073 R)
• M18: 31,608,983 km (0.057 R)
• M19: 37,562,230 km (0.057 R)
• M20: 38,323,384 km (0.11 R)
• M21: 38,836,355 km (0.069 R)
• M22: 43,662,083 km (0.11 R)
• M23: 44,786,311 km (0.067 R)
• M24: 50,851,907 km (0.043 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 430 - 18,972 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit